[PATCH 0/6] Fix gcc warnings of unused variables etc..

[PATCH 0/6] Fix gcc warnings of unused variables etc..

[Justin P. Mattock]

This set of patches, basically shuts-up
the warning messages by gcc-4.6.0.
As of now I just went through some
of the trivial ones that might be dead
code reported by gcc(but could be wrong).

Please have a look, if somebody has a better
way of dealing with this, let me know, and 
I can test some patches..

Justin P. Mattock

[PATCH 1/6]scripts:conf.c Fix warning: variable 'type' set but not used

[Justin P. Mattock]

Not sure if this is correct or not, but with 
make menuconfig
  HOSTCC  scripts/kconfig/conf.o
scripts/kconfig/conf.c: In function 'conf_sym':
scripts/kconfig/conf.c:159:6: warning: variable 'type' set but not used
scripts/kconfig/conf.c: In function 'conf_choice':
scripts/kconfig/conf.c:231:6: warning: variable 'type' set but not used
  HOSTLD  scripts/kconfig/mconf

I get this using gcc 4.6.0 the below change fixes this form me.
please have a look and let me know.
 
 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 scripts/kconfig/conf.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/scripts/kconfig/conf.c b/scripts/kconfig/conf.c
index 9960d1c..d6369e8 100644
--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -156,14 +156,12 @@ static int conf_string(struct menu *menu)
 static int conf_sym(struct menu *menu)
 {
 	struct symbol *sym = menu->sym;
-	int type;
 	tristate oldval, newval;
 
 	while (1) {
 		printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 		if (sym->name)
 			printf("(%s) ", sym->name);
-		type = sym_get_type(sym);
 		putchar('[');
 		oldval = sym_get_tristate_value(sym);
 		switch (oldval) {
@@ -228,11 +226,9 @@ static int conf_choice(struct menu *menu)
 {
 	struct symbol *sym, *def_sym;
 	struct menu *child;
-	int type;
 	bool is_new;
 
 	sym = menu->sym;
-	type = sym_get_type(sym);
 	is_new = !sym_has_value(sym);
 	if (sym_is_changable(sym)) {
 		conf_sym(menu);
-- 
1.7.1.rc1.21.gf3bd6

Re: [PATCH 1/6]scripts:conf.c Fix warning: variable 'type' set but not used

[Michal Marek]

On 11.6.2010 22:41, Justin P. Mattock wrote:
> Not sure if this is correct or not, but with 
> make menuconfig
>   HOSTCC  scripts/kconfig/conf.o
> scripts/kconfig/conf.c: In function 'conf_sym':
> scripts/kconfig/conf.c:159:6: warning: variable 'type' set but not used
> scripts/kconfig/conf.c: In function 'conf_choice':
> scripts/kconfig/conf.c:231:6: warning: variable 'type' set but not used
>   HOSTLD  scripts/kconfig/mconf
> 
> I get this using gcc 4.6.0 the below change fixes this form me.
> please have a look and let me know.
>  
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

Thanks, applied.

Michal

Re: [PATCH 1/6]scripts:conf.c Fix warning: variable 'type' set but not used

[Justin P. Mattock]

On 06/11/2010 03:19 PM, Michal Marek wrote:
> On 11.6.2010 22:41, Justin P. Mattock wrote:
>> Not sure if this is correct or not, but with
>> make menuconfig
>>    HOSTCC  scripts/kconfig/conf.o
>> scripts/kconfig/conf.c: In function 'conf_sym':
>> scripts/kconfig/conf.c:159:6: warning: variable 'type' set but not used
>> scripts/kconfig/conf.c: In function 'conf_choice':
>> scripts/kconfig/conf.c:231:6: warning: variable 'type' set but not used
>>    HOSTLD  scripts/kconfig/mconf
>>
>> I get this using gcc 4.6.0 the below change fixes this form me.
>> please have a look and let me know.
>>
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>
> Thanks, applied.
>
> Michal
>


o.k...

Justin P. Mattock

[PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Justin P. Mattock]

Removing dead code(hopefully), fixes a warning
when compiling the kernel.

  CC      kernel/audit.o
kernel/audit.c: In function 'audit_buffer_alloc':
kernel/audit.c:1044:19: warning: variable 'nlh' set but not used
  CC      kernel/auditfilter.o
 
 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 kernel/audit.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index c71bd26..783d958 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1041,8 +1041,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
 {
 	unsigned long flags;
 	struct audit_buffer *ab = NULL;
-	struct nlmsghdr *nlh;
-
+	
 	spin_lock_irqsave(&audit_freelist_lock, flags);
 	if (!list_empty(&audit_freelist)) {
 		ab = list_entry(audit_freelist.next,
@@ -1065,8 +1064,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
 	if (!ab->skb)
 		goto nlmsg_failure;
 
-	nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
-
+	
 	return ab;
 
 nlmsg_failure:                  /* Used by NLMSG_NEW */
-- 
1.7.1.rc1.21.gf3bd6

Re: [PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Geert Uytterhoeven]

On Fri, Jun 11, 2010 at 22:41, Justin P. Mattock
<justinmattock@gmail.com> wrote:
> Removing dead code(hopefully), fixes a warning

This is not dead code. NLMSG_NEW() sets up an nlmsg in ab->skb.
If you remove the code, it's no longer initialized.

> when compiling the kernel.
>
>  CC      kernel/audit.o
> kernel/audit.c: In function 'audit_buffer_alloc':
> kernel/audit.c:1044:19: warning: variable 'nlh' set but not used
>  CC      kernel/auditfilter.o
>
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
>  kernel/audit.c |    6 ++----
>  1 files changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/kernel/audit.c b/kernel/audit.c
> index c71bd26..783d958 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -1041,8 +1041,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
>  {
>        unsigned long flags;
>        struct audit_buffer *ab = NULL;
> -       struct nlmsghdr *nlh;
> -
> +
>        spin_lock_irqsave(&audit_freelist_lock, flags);
>        if (!list_empty(&audit_freelist)) {
>                ab = list_entry(audit_freelist.next,
> @@ -1065,8 +1064,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
>        if (!ab->skb)
>                goto nlmsg_failure;
>
> -       nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
> -
> +
>        return ab;
>
>  nlmsg_failure:                  /* Used by NLMSG_NEW */

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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Re: [PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Justin P. Mattock]

On 06/11/2010 02:14 PM, Geert Uytterhoeven wrote:
> On Fri, Jun 11, 2010 at 22:41, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>> Removing dead code(hopefully), fixes a warning
>
> This is not dead code. NLMSG_NEW() sets up an nlmsg in ab->skb.
> If you remove the code, it's no longer initialized.
>

o.k... this one did confuse me a bit, so at the end
I just sent in this one which does remove the function
but does not fix the warning of nlh not being used

>> when compiling the kernel.
>>
>>   CC      kernel/audit.o
>> kernel/audit.c: In function 'audit_buffer_alloc':
>> kernel/audit.c:1044:19: warning: variable 'nlh' set but not used
>>   CC      kernel/auditfilter.o
>>
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/audit.c |    6 ++----
>>   1 files changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/kernel/audit.c b/kernel/audit.c
>> index c71bd26..783d958 100644
>> --- a/kernel/audit.c
>> +++ b/kernel/audit.c
>> @@ -1041,8 +1041,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
>>   {
>>         unsigned long flags;
>>         struct audit_buffer *ab = NULL;
>> -       struct nlmsghdr *nlh;
>> -
>> +
>>         spin_lock_irqsave(&audit_freelist_lock, flags);
>>         if (!list_empty(&audit_freelist)) {
>>                 ab = list_entry(audit_freelist.next,
>> @@ -1065,8 +1064,7 @@ static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
>>         if (!ab->skb)
>>                 goto nlmsg_failure;
>>
>> -       nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
>> -
>> +
>>         return ab;
>>
>>   nlmsg_failure:                  /* Used by NLMSG_NEW */
>
> Gr{oetje,eeting}s,
>
> 						Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
>

if you have any ideas/patches then let me know
I can test it out and see.

Justin P. Mattock

Re: [PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Justin P. Mattock]

>
> This is not dead code. NLMSG_NEW() sets up an nlmsg in ab->skb.
> If you remove the code, it's no longer initialized.

I played around with this code some more, but am still getting confused 
with nlmsg_new and NLMSG_NEW. if I remove the nlmsghdr struct I can get 
a clean build without a warning, but still am a bit confused.

here is an updated patch let me know if it still needs work..
or if it's legit I can resend this.

 From 7515a08ba921d3beed33fa5c6b1fbe59cf52e069 Mon Sep 17 00:00:00 2001
From: Justin P. Mattock <justinmattock@gmail.com>
Date: Fri, 18 Jun 2010 19:44:30 -0700
Subject: [PATCH 4/4] audit
  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
  kernel/audit.c |    3 +--
  1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index c71bd26..1d51258 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1041,7 +1041,6 @@ static struct audit_buffer * 
audit_buffer_alloc(struct audit_context *ctx,
  {
  	unsigned long flags;
  	struct audit_buffer *ab = NULL;
-	struct nlmsghdr *nlh;

  	spin_lock_irqsave(&audit_freelist_lock, flags);
  	if (!list_empty(&audit_freelist)) {
@@ -1065,7 +1064,7 @@ static struct audit_buffer * 
audit_buffer_alloc(struct audit_context *ctx,
  	if (!ab->skb)
  		goto nlmsg_failure;

-	nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
+	NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);

  	return ab;

-- 
1.7.1.rc1.21.gf3bd6

Justin P. Mattock

Re: [PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Geert Uytterhoeven]

On Sat, Jun 19, 2010 at 06:45, Justin P. Mattock
<justinmattock@gmail.com> wrote:
>> This is not dead code. NLMSG_NEW() sets up an nlmsg in ab->skb.
>> If you remove the code, it's no longer initialized.
>
> I played around with this code some more, but am still getting confused with
> nlmsg_new and NLMSG_NEW. if I remove the nlmsghdr struct I can get a clean

nlmsg_new() allocates a new nlmsg.
NLMSG_NEW() initializes a nlmsg inside an already allocated skbuff.

> build without a warning, but still am a bit confused.
>
> here is an updated patch let me know if it still needs work..
> or if it's legit I can resend this.

Looks OK to me, thanks!

> From 7515a08ba921d3beed33fa5c6b1fbe59cf52e069 Mon Sep 17 00:00:00 2001
> From: Justin P. Mattock <justinmattock@gmail.com>
> Date: Fri, 18 Jun 2010 19:44:30 -0700
> Subject: [PATCH 4/4] audit
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
>  kernel/audit.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/audit.c b/kernel/audit.c
> index c71bd26..1d51258 100644
> --- a/kernel/audit.c
> +++ b/kernel/audit.c
> @@ -1041,7 +1041,6 @@ static struct audit_buffer * audit_buffer_alloc(struct
> audit_context *ctx,
>  {
>        unsigned long flags;
>        struct audit_buffer *ab = NULL;
> -       struct nlmsghdr *nlh;
>
>        spin_lock_irqsave(&audit_freelist_lock, flags);
>        if (!list_empty(&audit_freelist)) {
> @@ -1065,7 +1064,7 @@ static struct audit_buffer * audit_buffer_alloc(struct
> audit_context *ctx,
>        if (!ab->skb)
>                goto nlmsg_failure;
>
> -       nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
> +       NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
>
>        return ab;
>
> --
> 1.7.1.rc1.21.gf3bd6

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: [PATCH 2/6]kernel:audit.c Fix warning: variable 'nlh' set but not used

[Justin P. Mattock]

On 06/19/2010 01:06 AM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 06:45, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>>> This is not dead code. NLMSG_NEW() sets up an nlmsg in ab->skb.
>>> If you remove the code, it's no longer initialized.
>>
>> I played around with this code some more, but am still getting confused with
>> nlmsg_new and NLMSG_NEW. if I remove the nlmsghdr struct I can get a clean
>
> nlmsg_new() allocates a new nlmsg.
> NLMSG_NEW() initializes a nlmsg inside an already allocated skbuff.
>

o.k.. now I see what those two are doing a bit better now nlmsg_new
is the start of a netlink messg, and NLMSG_NEW is a new netlink messg 
thats already been started.

>> build without a warning, but still am a bit confused.
>>
>> here is an updated patch let me know if it still needs work..
>> or if it's legit I can resend this.
>
> Looks OK to me, thanks!
>

I'll resend it out with the proper subject, and proper intro to it.

>>  From 7515a08ba921d3beed33fa5c6b1fbe59cf52e069 Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@gmail.com>
>> Date: Fri, 18 Jun 2010 19:44:30 -0700
>> Subject: [PATCH 4/4] audit
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/audit.c |    3 +--
>>   1 files changed, 1 insertions(+), 2 deletions(-)
>>
>> diff --git a/kernel/audit.c b/kernel/audit.c
>> index c71bd26..1d51258 100644
>> --- a/kernel/audit.c
>> +++ b/kernel/audit.c
>> @@ -1041,7 +1041,6 @@ static struct audit_buffer * audit_buffer_alloc(struct
>> audit_context *ctx,
>>   {
>>         unsigned long flags;
>>         struct audit_buffer *ab = NULL;
>> -       struct nlmsghdr *nlh;
>>
>>         spin_lock_irqsave(&audit_freelist_lock, flags);
>>         if (!list_empty(&audit_freelist)) {
>> @@ -1065,7 +1064,7 @@ static struct audit_buffer * audit_buffer_alloc(struct
>> audit_context *ctx,
>>         if (!ab->skb)
>>                 goto nlmsg_failure;
>>
>> -       nlh = NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
>> +       NLMSG_NEW(ab->skb, 0, 0, type, 0, 0);
>>
>>         return ab;
>>
>> --
>> 1.7.1.rc1.21.gf3bd6
>
> Gr{oetje,eeting}s,
>
> 						Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
>

thanks for taking the time to look at this.

Justin P. Mattock

[PATCH 3/6]cifs Fix variable not set warnings

[Justin P. Mattock]

The patch below fixes the warning messages from
gcc 4.6.0 and compiling the kernel.

  CC [M]  fs/cifs/file.o
fs/cifs/file.c: In function 'cifs_partialpagewrite':
fs/cifs/file.c:1315:23: warning: variable 'pTcon' set but not used

  CC [M]  fs/cifs/dir.o
fs/cifs/dir.c: In function 'cifs_lookup':
fs/cifs/dir.c:641:15: warning: variable 'filp' set but not used

  CC [M]  fs/cifs/cifssmb.o
fs/cifs/cifssmb.c: In function 'CIFSSMBSetFileSize':
fs/cifs/cifssmb.c:4855:8: warning: variable 'data_offset' set but not used
  CC [M]  fs/cifs/cifs_debug.o


 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 fs/cifs/cifssmb.c |    4 +---
 fs/cifs/dir.c     |    4 +---
 fs/cifs/file.c    |    6 +-----
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index c65c341..ca872c3 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -4852,7 +4852,6 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
 		   __u16 fid, __u32 pid_of_opener, bool SetAllocation)
 {
 	struct smb_com_transaction2_sfi_req *pSMB  = NULL;
-	char *data_offset;
 	struct file_end_of_file_info *parm_data;
 	int rc = 0;
 	__u16 params, param_offset, offset, byte_count, count;
@@ -4876,8 +4875,7 @@ CIFSSMBSetFileSize(const int xid, struct cifsTconInfo *tcon, __u64 size,
 	param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
 	offset = param_offset + params;
 
-	data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
-
+	
 	count = sizeof(struct file_end_of_file_info);
 	pSMB->MaxParameterCount = cpu_to_le16(2);
 	/* BB find exact max SMB PDU from sess structure BB */
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 391816b..cd409c0 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -638,8 +638,7 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
 	struct cifsTconInfo *pTcon;
 	struct inode *newInode = NULL;
 	char *full_path = NULL;
-	struct file *filp;
-
+	
 	xid = GetXid();
 
 	cFYI(1, "parent inode = 0x%p name is: %s and dentry = 0x%p",
@@ -734,7 +733,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
 			direntry->d_op = &cifs_dentry_ops;
 		d_add(direntry, newInode);
 		if (posix_open)
-			filp = lookup_instantiate_filp(nd, direntry, NULL);
 		/* since paths are not looked up by component - the parent
 		   directories are presumed to be good here */
 		renew_parental_timestamps(direntry);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 75541af..bbb66d5 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1311,8 +1311,6 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
 	char *write_data;
 	int rc = -EFAULT;
 	int bytes_written = 0;
-	struct cifs_sb_info *cifs_sb;
-	struct cifsTconInfo *pTcon;
 	struct inode *inode;
 	struct cifsFileInfo *open_file;
 
@@ -1320,9 +1318,7 @@ static int cifs_partialpagewrite(struct page *page, unsigned from, unsigned to)
 		return -EFAULT;
 
 	inode = page->mapping->host;
-	cifs_sb = CIFS_SB(inode->i_sb);
-	pTcon = cifs_sb->tcon;
-
+		
 	offset += (loff_t)from;
 	write_data = kmap(page);
 	write_data += from;
-- 
1.7.1.rc1.21.gf3bd6

Re: [PATCH 3/6]cifs Fix variable not set warnings

[Alessandro Guido]

> ...
> @@ -734,7 +733,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct dentry *direntry,
>   			direntry->d_op =&cifs_dentry_ops;
>   		d_add(direntry, newInode);
>   		if (posix_open)
> -			filp = lookup_instantiate_filp(nd, direntry, NULL);
>   		/* since paths are not looked up by component - the parent
>   		   directories are presumed to be good here */
>   		renew_parental_timestamps(direntry);
> ...

This is wrong, now "renew_parental_timestamps(direntry)" is in the if body.

Re: [PATCH 3/6]cifs Fix variable not set warnings

[Justin P. Mattock]

On 06/20/2010 06:22 AM, Alessandro Guido wrote:
>> ...
>> @@ -734,7 +733,6 @@ cifs_lookup(struct inode *parent_dir_inode, struct
>> dentry *direntry,
>> direntry->d_op =&cifs_dentry_ops;
>> d_add(direntry, newInode);
>> if (posix_open)
>> - filp = lookup_instantiate_filp(nd, direntry, NULL);
>> /* since paths are not looked up by component - the parent
>> directories are presumed to be good here */
>> renew_parental_timestamps(direntry);
>> ...
>
> This is wrong, now "renew_parental_timestamps(direntry)" is in the if body.
>
>
>

have you had a chance to look at the later one I had sent in yesterday?
if so out of the two, which might be a better bet(keep in mind the first 
set has whitespace issues).

Justin P. Mattock

[PATCH 4/6]hfs Fix variable set but not used

[Justin P. Mattock]

Im getting these warnings when compiling
(the patch below gets rid of the warning).

  CC [M]  fs/hfsplus/extents.o
fs/hfsplus/extents.c: In function 'hfsplus_get_block':
fs/hfsplus/extents.c:178:6: warning: variable 'shift' set but not used

 CC [M]  fs/hfs/bnode.o
fs/hfs/bnode.c: In function 'hfs_bnode_copy':
fs/hfs/bnode.c:100:20: warning: variable 'tree' set but not used
fs/hfs/bnode.c: In function '__hfs_bnode_create':
fs/hfs/bnode.c:238:22: warning: variable 'sb' set but not used


 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 fs/hfs/bnode.c       |    4 ----
 fs/hfsplus/extents.c |    4 +---
 2 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/fs/hfs/bnode.c b/fs/hfs/bnode.c
index cdb41a1..c6e0bd2 100644
--- a/fs/hfs/bnode.c
+++ b/fs/hfs/bnode.c
@@ -97,13 +97,11 @@ void hfs_bnode_clear(struct hfs_bnode *node, int off, int len)
 void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst,
 		struct hfs_bnode *src_node, int src, int len)
 {
-	struct hfs_btree *tree;
 	struct page *src_page, *dst_page;
 
 	dprint(DBG_BNODE_MOD, "copybytes: %u,%u,%u\n", dst, src, len);
 	if (!len)
 		return;
-	tree = src_node->tree;
 	src += src_node->page_offset;
 	dst += dst_node->page_offset;
 	src_page = src_node->page[0];
@@ -235,7 +233,6 @@ struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid)
 
 static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
 {
-	struct super_block *sb;
 	struct hfs_bnode *node, *node2;
 	struct address_space *mapping;
 	struct page *page;
@@ -247,7 +244,6 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid)
 		return NULL;
 	}
 
-	sb = tree->inode->i_sb;
 	size = sizeof(struct hfs_bnode) + tree->pages_per_bnode *
 		sizeof(struct page *);
 	node = kzalloc(size, GFP_KERNEL);
diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c
index 0022eec..7b5728d 100644
--- a/fs/hfsplus/extents.c
+++ b/fs/hfsplus/extents.c
@@ -175,12 +175,10 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock,
 	struct super_block *sb;
 	int res = -EIO;
 	u32 ablock, dblock, mask;
-	int shift;
-
+	
 	sb = inode->i_sb;
 
 	/* Convert inode block to disk allocation block */
-	shift = HFSPLUS_SB(sb).alloc_blksz_shift - sb->s_blocksize_bits;
 	ablock = iblock >> HFSPLUS_SB(sb).fs_shift;
 
 	if (iblock >= HFSPLUS_I(inode).fs_blocks) {
-- 
1.7.1.rc1.21.gf3bd6

[PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

The below patch fixes a warning message 
reported by gcc 4.6.0.

  CC      kernel/module.o
kernel/module.c: In function 'add_usage_links':
kernel/module.c:1343:6: warning: variable 'nowarn' set but not used

 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 kernel/module.c |    8 ++------
 1 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 8c6b428..a71027a 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1340,13 +1340,9 @@ static void add_usage_links(struct module *mod)
 {
 #ifdef CONFIG_MODULE_UNLOAD
 	struct module_use *use;
-	int nowarn;
-
+	
 	mutex_lock(&module_mutex);
-	list_for_each_entry(use, &mod->target_list, target_list) {
-		nowarn = sysfs_create_link(use->target->holders_dir,
-					   &mod->mkobj.kobj, mod->name);
-	}
+	list_for_each_entry(use, &mod->target_list, target_list); 
 	mutex_unlock(&module_mutex);
 #endif
 }
-- 
1.7.1.rc1.21.gf3bd6

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Geert Uytterhoeven]

On Fri, Jun 11, 2010 at 22:41, Justin P. Mattock
<justinmattock@gmail.com> wrote:
> The below patch fixes a warning message
> reported by gcc 4.6.0.
>
>  CC      kernel/module.o
> kernel/module.c: In function 'add_usage_links':
> kernel/module.c:1343:6: warning: variable 'nowarn' set but not used
>
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
>  kernel/module.c |    8 ++------
>  1 files changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/kernel/module.c b/kernel/module.c
> index 8c6b428..a71027a 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -1340,13 +1340,9 @@ static void add_usage_links(struct module *mod)
>  {
>  #ifdef CONFIG_MODULE_UNLOAD
>        struct module_use *use;
> -       int nowarn;
> -
> +
>        mutex_lock(&module_mutex);
> -       list_for_each_entry(use, &mod->target_list, target_list) {
> -               nowarn = sysfs_create_link(use->target->holders_dir,
> -                                          &mod->mkobj.kobj, mod->name);
> -       }
> +       list_for_each_entry(use, &mod->target_list, target_list);
>        mutex_unlock(&module_mutex);
>  #endif
>  }

Also wrong, you removed the creation of the links in sysfs.

The assignment to nowarn was there to avoid another compiler warning,
as sysfs_create_link() is marked __must_check.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

On 06/11/2010 02:17 PM, Geert Uytterhoeven wrote:
> On Fri, Jun 11, 2010 at 22:41, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>> The below patch fixes a warning message
>> reported by gcc 4.6.0.
>>
>>   CC      kernel/module.o
>> kernel/module.c: In function 'add_usage_links':
>> kernel/module.c:1343:6: warning: variable 'nowarn' set but not used
>>
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/module.c |    8 ++------
>>   1 files changed, 2 insertions(+), 6 deletions(-)
>>
>> diff --git a/kernel/module.c b/kernel/module.c
>> index 8c6b428..a71027a 100644
>> --- a/kernel/module.c
>> +++ b/kernel/module.c
>> @@ -1340,13 +1340,9 @@ static void add_usage_links(struct module *mod)
>>   {
>>   #ifdef CONFIG_MODULE_UNLOAD
>>         struct module_use *use;
>> -       int nowarn;
>> -
>> +
>>         mutex_lock(&module_mutex);
>> -       list_for_each_entry(use,&mod->target_list, target_list) {
>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>> -&mod->mkobj.kobj, mod->name);
>> -       }
>> +       list_for_each_entry(use,&mod->target_list, target_list);
>>         mutex_unlock(&module_mutex);
>>   #endif
>>   }
>
> Also wrong, you removed the creation of the links in sysfs.
>

that's not good..

> The assignment to nowarn was there to avoid another compiler warning,
> as sysfs_create_link() is marked __must_check.
>
> Gr{oetje,eeting}s,
>
> 						Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
>

alright.. thanks for having a look
and a response. if somebody has a fix
for this then let me know, and I can
test it out over here(I can also try
fixing this as well, but my knowledge
of code only goes so far)..

Justin P. Mattock

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

> Also wrong, you removed the creation of the links in sysfs.
>
> The assignment to nowarn was there to avoid another compiler warning,
> as sysfs_create_link() is marked __must_check.

I also went back to this one and made the following changes.. let me 
know if it's wrong etc..

 From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
From: Justin P. Mattock <justinmattock@gmail.com>
Date: Fri, 18 Jun 2010 22:01:07 -0700
Subject: [PATCH 5/5] module.c
  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
  kernel/module.c |    3 +--
  1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 8c6b428..48fc5c8 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
  {
  #ifdef CONFIG_MODULE_UNLOAD
  	struct module_use *use;
-	int nowarn;

  	mutex_lock(&module_mutex);
  	list_for_each_entry(use, &mod->target_list, target_list) {
-		nowarn = sysfs_create_link(use->target->holders_dir,
+		sysfs_create_link(use->target->holders_dir,
  					   &mod->mkobj.kobj, mod->name);
  	}
  	mutex_unlock(&module_mutex);
-- 
1.7.1.rc1.21.gf3bd6

if it looks good, then I can resend it out.

Justin P. Mattock

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Geert Uytterhoeven]

On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
<justinmattock@gmail.com> wrote:
>> Also wrong, you removed the creation of the links in sysfs.
>>
>> The assignment to nowarn was there to avoid another compiler warning,
>> as sysfs_create_link() is marked __must_check.
>
> I also went back to this one and made the following changes.. let me know if
> it's wrong etc..
>
> From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
> From: Justin P. Mattock <justinmattock@gmail.com>
> Date: Fri, 18 Jun 2010 22:01:07 -0700
> Subject: [PATCH 5/5] module.c
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
>  kernel/module.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/module.c b/kernel/module.c
> index 8c6b428..48fc5c8 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>  {
>  #ifdef CONFIG_MODULE_UNLOAD
>        struct module_use *use;
> -       int nowarn;
>
>        mutex_lock(&module_mutex);
>        list_for_each_entry(use, &mod->target_list, target_list) {
> -               nowarn = sysfs_create_link(use->target->holders_dir,
> +               sysfs_create_link(use->target->holders_dir,
>                                           &mod->mkobj.kobj, mod->name);
>        }
>        mutex_unlock(&module_mutex);
> --
> 1.7.1.rc1.21.gf3bd6
>
> if it looks good, then I can resend it out.

Have you compile-tested this?
As sysfs_create_link() is marked __must_check, that will cause another compiler
warning, but only if CONFIG_SYSFS=y.

Perhaps you can just mark the nowarn variable __unused?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>>> Also wrong, you removed the creation of the links in sysfs.
>>>
>>> The assignment to nowarn was there to avoid another compiler warning,
>>> as sysfs_create_link() is marked __must_check.
>>
>> I also went back to this one and made the following changes.. let me know if
>> it's wrong etc..
>>
>>  From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@gmail.com>
>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>> Subject: [PATCH 5/5] module.c
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/module.c |    3 +--
>>   1 files changed, 1 insertions(+), 2 deletions(-)
>>
>> diff --git a/kernel/module.c b/kernel/module.c
>> index 8c6b428..48fc5c8 100644
>> --- a/kernel/module.c
>> +++ b/kernel/module.c
>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>   {
>>   #ifdef CONFIG_MODULE_UNLOAD
>>         struct module_use *use;
>> -       int nowarn;
>>
>>         mutex_lock(&module_mutex);
>>         list_for_each_entry(use,&mod->target_list, target_list) {
>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>> +               sysfs_create_link(use->target->holders_dir,
>>                                            &mod->mkobj.kobj, mod->name);
>>         }
>>         mutex_unlock(&module_mutex);
>> --
>> 1.7.1.rc1.21.gf3bd6
>>
>> if it looks good, then I can resend it out.
>
> Have you compile-tested this?
> As sysfs_create_link() is marked __must_check, that will cause another compiler
> warning, but only if CONFIG_SYSFS=y.
>

yeah I did compile test this. greping SYSFS I do have that enabled in 
the kernel just to make sure I reset the kernel compiled the warning 
showed up, thenI applied this patch and the warning was not there.
could be something different then.

> Perhaps you can just mark the nowarn variable __unused?

sure.. I'll give that a try..

>
> Gr{oetje,eeting}s,
>
> 						Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
>


again Thanks for your time and info.

Justin P. Mattock

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>>> Also wrong, you removed the creation of the links in sysfs.
>>>
>>> The assignment to nowarn was there to avoid another compiler warning,
>>> as sysfs_create_link() is marked __must_check.
>>
>> I also went back to this one and made the following changes.. let me know if
>> it's wrong etc..
>>
>>  From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@gmail.com>
>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>> Subject: [PATCH 5/5] module.c
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/module.c |    3 +--
>>   1 files changed, 1 insertions(+), 2 deletions(-)
>>
>> diff --git a/kernel/module.c b/kernel/module.c
>> index 8c6b428..48fc5c8 100644
>> --- a/kernel/module.c
>> +++ b/kernel/module.c
>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>   {
>>   #ifdef CONFIG_MODULE_UNLOAD
>>         struct module_use *use;
>> -       int nowarn;
>>
>>         mutex_lock(&module_mutex);
>>         list_for_each_entry(use,&mod->target_list, target_list) {
>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>> +               sysfs_create_link(use->target->holders_dir,
>>                                            &mod->mkobj.kobj, mod->name);
>>         }
>>         mutex_unlock(&module_mutex);
>> --
>> 1.7.1.rc1.21.gf3bd6
>>
>> if it looks good, then I can resend it out.
>
> Have you compile-tested this?
> As sysfs_create_link() is marked __must_check, that will cause another compiler
> warning, but only if CONFIG_SYSFS=y.
>
> Perhaps you can just mark the nowarn variable __unused?


o.k. this builds cleanly without a warning, but is it the right thing 
todo? i.g. rather leave the warning message there and file a bug than 
just silence the issue. Anyways here is what I have:

 From edbeb2b1ee051218f9e5b93fcb8bbdbf1119a6e4 Mon Sep 17 00:00:00 2001
From: Justin P. Mattock <justinmattock@gmail.com>
Date: Sat, 19 Jun 2010 12:07:32 -0700
Subject: [PATCH 5/5] module.c
  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
  kernel/module.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/module.c b/kernel/module.c
index 8c6b428..765bac5 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1340,7 +1340,7 @@ static void add_usage_links(struct module *mod)
  {
  #ifdef CONFIG_MODULE_UNLOAD
  	struct module_use *use;
-	int nowarn;
+	int nowarn __attribute__((unused));

  	mutex_lock(&module_mutex);
  	list_for_each_entry(use, &mod->target_list, target_list) {
-- 
1.7.1.rc1.21.gf3bd6

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Geert Uytterhoeven]

On Sat, Jun 19, 2010 at 21:10, Justin P. Mattock
<justinmattock@gmail.com> wrote:
> On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
>>
>> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
>> <justinmattock@gmail.com>  wrote:
>>>>
>>>> Also wrong, you removed the creation of the links in sysfs.
>>>>
>>>> The assignment to nowarn was there to avoid another compiler warning,
>>>> as sysfs_create_link() is marked __must_check.
>>>
>>> I also went back to this one and made the following changes.. let me know
>>> if
>>> it's wrong etc..
>>>
>>>  From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>>> Subject: [PATCH 5/5] module.c
>>>  Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>
>>> ---
>>>  kernel/module.c |    3 +--
>>>  1 files changed, 1 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/kernel/module.c b/kernel/module.c
>>> index 8c6b428..48fc5c8 100644
>>> --- a/kernel/module.c
>>> +++ b/kernel/module.c
>>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>>  {
>>>  #ifdef CONFIG_MODULE_UNLOAD
>>>        struct module_use *use;
>>> -       int nowarn;
>>>
>>>        mutex_lock(&module_mutex);
>>>        list_for_each_entry(use,&mod->target_list, target_list) {
>>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>>> +               sysfs_create_link(use->target->holders_dir,
>>>                                           &mod->mkobj.kobj, mod->name);
>>>        }
>>>        mutex_unlock(&module_mutex);
>>> --
>>> 1.7.1.rc1.21.gf3bd6
>>>
>>> if it looks good, then I can resend it out.
>>
>> Have you compile-tested this?
>> As sysfs_create_link() is marked __must_check, that will cause another
>> compiler
>> warning, but only if CONFIG_SYSFS=y.
>>
>> Perhaps you can just mark the nowarn variable __unused?
>
>
> o.k. this builds cleanly without a warning, but is it the right thing todo?
> i.g. rather leave the warning message there and file a bug than just silence
> the issue. Anyways here is what I have:
>
> From edbeb2b1ee051218f9e5b93fcb8bbdbf1119a6e4 Mon Sep 17 00:00:00 2001
> From: Justin P. Mattock <justinmattock@gmail.com>
> Date: Sat, 19 Jun 2010 12:07:32 -0700
> Subject: [PATCH 5/5] module.c
>  Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
>
> ---
>  kernel/module.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/kernel/module.c b/kernel/module.c
> index 8c6b428..765bac5 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -1340,7 +1340,7 @@ static void add_usage_links(struct module *mod)
>  {
>  #ifdef CONFIG_MODULE_UNLOAD
>        struct module_use *use;
> -       int nowarn;
> +       int nowarn __attribute__((unused));

The `__attribute__((unused))' should be `__used'.

>
>        mutex_lock(&module_mutex);
>        list_for_each_entry(use, &mod->target_list, target_list) {
> --
> 1.7.1.rc1.21.gf3bd6

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

On 06/19/2010 12:45 PM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 21:10, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>> On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
>>>
>>> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
>>> <justinmattock@gmail.com>    wrote:
>>>>>
>>>>> Also wrong, you removed the creation of the links in sysfs.
>>>>>
>>>>> The assignment to nowarn was there to avoid another compiler warning,
>>>>> as sysfs_create_link() is marked __must_check.
>>>>
>>>> I also went back to this one and made the following changes.. let me know
>>>> if
>>>> it's wrong etc..
>>>>
>>>>   From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>>>> Subject: [PATCH 5/5] module.c
>>>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>>
>>>> ---
>>>>   kernel/module.c |    3 +--
>>>>   1 files changed, 1 insertions(+), 2 deletions(-)
>>>>
>>>> diff --git a/kernel/module.c b/kernel/module.c
>>>> index 8c6b428..48fc5c8 100644
>>>> --- a/kernel/module.c
>>>> +++ b/kernel/module.c
>>>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>>>   {
>>>>   #ifdef CONFIG_MODULE_UNLOAD
>>>>         struct module_use *use;
>>>> -       int nowarn;
>>>>
>>>>         mutex_lock(&module_mutex);
>>>>         list_for_each_entry(use,&mod->target_list, target_list) {
>>>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>>>> +               sysfs_create_link(use->target->holders_dir,
>>>>                                            &mod->mkobj.kobj, mod->name);
>>>>         }
>>>>         mutex_unlock(&module_mutex);
>>>> --
>>>> 1.7.1.rc1.21.gf3bd6
>>>>
>>>> if it looks good, then I can resend it out.
>>>
>>> Have you compile-tested this?
>>> As sysfs_create_link() is marked __must_check, that will cause another
>>> compiler
>>> warning, but only if CONFIG_SYSFS=y.
>>>
>>> Perhaps you can just mark the nowarn variable __unused?
>>
>>
>> o.k. this builds cleanly without a warning, but is it the right thing todo?
>> i.g. rather leave the warning message there and file a bug than just silence
>> the issue. Anyways here is what I have:
>>
>>  From edbeb2b1ee051218f9e5b93fcb8bbdbf1119a6e4 Mon Sep 17 00:00:00 2001
>> From: Justin P. Mattock<justinmattock@gmail.com>
>> Date: Sat, 19 Jun 2010 12:07:32 -0700
>> Subject: [PATCH 5/5] module.c
>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>
>> ---
>>   kernel/module.c |    2 +-
>>   1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/kernel/module.c b/kernel/module.c
>> index 8c6b428..765bac5 100644
>> --- a/kernel/module.c
>> +++ b/kernel/module.c
>> @@ -1340,7 +1340,7 @@ static void add_usage_links(struct module *mod)
>>   {
>>   #ifdef CONFIG_MODULE_UNLOAD
>>         struct module_use *use;
>> -       int nowarn;
>> +       int nowarn __attribute__((unused));
>
> The `__attribute__((unused))' should be `__used'.
>

I'm confused now. how should I write that out?
(google is not giving me vary many examples on this)

>>
>>         mutex_lock(&module_mutex);
>>         list_for_each_entry(use,&mod->target_list, target_list) {
>> --
>> 1.7.1.rc1.21.gf3bd6
>
> Gr{oetje,eeting}s,
>
> 						Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
>

Justin P. Mattock

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Geert Uytterhoeven]

On Sat, Jun 19, 2010 at 22:10, Justin P. Mattock
<justinmattock@gmail.com> wrote:
> On 06/19/2010 12:45 PM, Geert Uytterhoeven wrote:
>>
>> On Sat, Jun 19, 2010 at 21:10, Justin P. Mattock
>> <justinmattock@gmail.com>  wrote:
>>>
>>> On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
>>>>
>>>> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
>>>> <justinmattock@gmail.com>    wrote:
>>>>>>
>>>>>> Also wrong, you removed the creation of the links in sysfs.
>>>>>>
>>>>>> The assignment to nowarn was there to avoid another compiler warning,
>>>>>> as sysfs_create_link() is marked __must_check.
>>>>>
>>>>> I also went back to this one and made the following changes.. let me
>>>>> know
>>>>> if
>>>>> it's wrong etc..
>>>>>
>>>>>  From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>>>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>>>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>>>>> Subject: [PATCH 5/5] module.c
>>>>>  Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>>>
>>>>> ---
>>>>>  kernel/module.c |    3 +--
>>>>>  1 files changed, 1 insertions(+), 2 deletions(-)
>>>>>
>>>>> diff --git a/kernel/module.c b/kernel/module.c
>>>>> index 8c6b428..48fc5c8 100644
>>>>> --- a/kernel/module.c
>>>>> +++ b/kernel/module.c
>>>>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>>>>  {
>>>>>  #ifdef CONFIG_MODULE_UNLOAD
>>>>>        struct module_use *use;
>>>>> -       int nowarn;
>>>>>
>>>>>        mutex_lock(&module_mutex);
>>>>>        list_for_each_entry(use,&mod->target_list, target_list) {
>>>>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>>>>> +               sysfs_create_link(use->target->holders_dir,
>>>>>                                           &mod->mkobj.kobj, mod->name);
>>>>>        }
>>>>>        mutex_unlock(&module_mutex);
>>>>> --
>>>>> 1.7.1.rc1.21.gf3bd6
>>>>>
>>>>> if it looks good, then I can resend it out.
>>>>
>>>> Have you compile-tested this?
>>>> As sysfs_create_link() is marked __must_check, that will cause another
>>>> compiler
>>>> warning, but only if CONFIG_SYSFS=y.
>>>>
>>>> Perhaps you can just mark the nowarn variable __unused?
>>>
>>>
>>> o.k. this builds cleanly without a warning, but is it the right thing
>>> todo?
>>> i.g. rather leave the warning message there and file a bug than just
>>> silence
>>> the issue. Anyways here is what I have:
>>>
>>>  From edbeb2b1ee051218f9e5b93fcb8bbdbf1119a6e4 Mon Sep 17 00:00:00 2001
>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>> Date: Sat, 19 Jun 2010 12:07:32 -0700
>>> Subject: [PATCH 5/5] module.c
>>>  Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>
>>> ---
>>>  kernel/module.c |    2 +-
>>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>>
>>> diff --git a/kernel/module.c b/kernel/module.c
>>> index 8c6b428..765bac5 100644
>>> --- a/kernel/module.c
>>> +++ b/kernel/module.c
>>> @@ -1340,7 +1340,7 @@ static void add_usage_links(struct module *mod)
>>>  {
>>>  #ifdef CONFIG_MODULE_UNLOAD
>>>        struct module_use *use;
>>> -       int nowarn;
>>> +       int nowarn __attribute__((unused));
>>
>> The `__attribute__((unused))' should be `__used'.
>>
>
> I'm confused now. how should I write that out?
> (google is not giving me vary many examples on this)

Sorry, I misrememberd there was a #define for it, and could find only __used.
But on closer look, the `__attribute__((unused)` is correct.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

Re: [PATCH 5/6]kernel:module.c variable 'nowarn' set but not used

[Justin P. Mattock]

On 06/19/2010 01:23 PM, Geert Uytterhoeven wrote:
> On Sat, Jun 19, 2010 at 22:10, Justin P. Mattock
> <justinmattock@gmail.com>  wrote:
>> On 06/19/2010 12:45 PM, Geert Uytterhoeven wrote:
>>>
>>> On Sat, Jun 19, 2010 at 21:10, Justin P. Mattock
>>> <justinmattock@gmail.com>    wrote:
>>>>
>>>> On 06/19/2010 01:08 AM, Geert Uytterhoeven wrote:
>>>>>
>>>>> On Sat, Jun 19, 2010 at 07:04, Justin P. Mattock
>>>>> <justinmattock@gmail.com>      wrote:
>>>>>>>
>>>>>>> Also wrong, you removed the creation of the links in sysfs.
>>>>>>>
>>>>>>> The assignment to nowarn was there to avoid another compiler warning,
>>>>>>> as sysfs_create_link() is marked __must_check.
>>>>>>
>>>>>> I also went back to this one and made the following changes.. let me
>>>>>> know
>>>>>> if
>>>>>> it's wrong etc..
>>>>>>
>>>>>>   From 4f45beed80627d2bb32fb021bb6d22d88089557b Mon Sep 17 00:00:00 2001
>>>>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>>>>> Date: Fri, 18 Jun 2010 22:01:07 -0700
>>>>>> Subject: [PATCH 5/5] module.c
>>>>>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>>>>
>>>>>> ---
>>>>>>   kernel/module.c |    3 +--
>>>>>>   1 files changed, 1 insertions(+), 2 deletions(-)
>>>>>>
>>>>>> diff --git a/kernel/module.c b/kernel/module.c
>>>>>> index 8c6b428..48fc5c8 100644
>>>>>> --- a/kernel/module.c
>>>>>> +++ b/kernel/module.c
>>>>>> @@ -1340,11 +1340,10 @@ static void add_usage_links(struct module *mod)
>>>>>>   {
>>>>>>   #ifdef CONFIG_MODULE_UNLOAD
>>>>>>         struct module_use *use;
>>>>>> -       int nowarn;
>>>>>>
>>>>>>         mutex_lock(&module_mutex);
>>>>>>         list_for_each_entry(use,&mod->target_list, target_list) {
>>>>>> -               nowarn = sysfs_create_link(use->target->holders_dir,
>>>>>> +               sysfs_create_link(use->target->holders_dir,
>>>>>>                                            &mod->mkobj.kobj, mod->name);
>>>>>>         }
>>>>>>         mutex_unlock(&module_mutex);
>>>>>> --
>>>>>> 1.7.1.rc1.21.gf3bd6
>>>>>>
>>>>>> if it looks good, then I can resend it out.
>>>>>
>>>>> Have you compile-tested this?
>>>>> As sysfs_create_link() is marked __must_check, that will cause another
>>>>> compiler
>>>>> warning, but only if CONFIG_SYSFS=y.
>>>>>
>>>>> Perhaps you can just mark the nowarn variable __unused?
>>>>
>>>>
>>>> o.k. this builds cleanly without a warning, but is it the right thing
>>>> todo?
>>>> i.g. rather leave the warning message there and file a bug than just
>>>> silence
>>>> the issue. Anyways here is what I have:
>>>>
>>>>   From edbeb2b1ee051218f9e5b93fcb8bbdbf1119a6e4 Mon Sep 17 00:00:00 2001
>>>> From: Justin P. Mattock<justinmattock@gmail.com>
>>>> Date: Sat, 19 Jun 2010 12:07:32 -0700
>>>> Subject: [PATCH 5/5] module.c
>>>>   Signed-off-by: Justin P. Mattock<justinmattock@gmail.com>
>>>>
>>>> ---
>>>>   kernel/module.c |    2 +-
>>>>   1 files changed, 1 insertions(+), 1 deletions(-)
>>>>
>>>> diff --git a/kernel/module.c b/kernel/module.c
>>>> index 8c6b428..765bac5 100644
>>>> --- a/kernel/module.c
>>>> +++ b/kernel/module.c
>>>> @@ -1340,7 +1340,7 @@ static void add_usage_links(struct module *mod)
>>>>   {
>>>>   #ifdef CONFIG_MODULE_UNLOAD
>>>>         struct module_use *use;
>>>> -       int nowarn;
>>>> +       int nowarn __attribute__((unused));
>>>
>>> The `__attribute__((unused))' should be `__used'.
>>>
>>
>> I'm confused now. how should I write that out?
>> (google is not giving me vary many examples on this)
>
> Sorry, I misrememberd there was a #define for it, and could find only __used.
> But on closer look, the `__attribute__((unused)` is correct.
>

alright!! then I'll resend this with the above change.

Thanks for looking at this!!

Justin P. Mattock

[PATCH 6/6]afs:fsclient.c Fix variable 'bp' set but not used

[Justin P. Mattock]

This fixes this warning message I'm getting:

  CC [M]  fs/afs/fsclient.o
fs/afs/fsclient.c: In function 'afs_deliver_fs_xxxx_lock':
fs/afs/fsclient.c:1759:16: warning: variable 'bp' set but not used
  CC [M]  fs/afs/inode.o

 Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>

---
 fs/afs/fsclient.c |    5 +----
 1 files changed, 1 insertions(+), 4 deletions(-)

diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 4bd0218..aca2ccb 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -1756,8 +1756,7 @@ int afs_fs_get_volume_status(struct afs_server *server,
 static int afs_deliver_fs_xxxx_lock(struct afs_call *call,
 				    struct sk_buff *skb, bool last)
 {
-	const __be32 *bp;
-
+	
 	_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
 
 	afs_transfer_reply(call, skb);
@@ -1767,8 +1766,6 @@ static int afs_deliver_fs_xxxx_lock(struct afs_call *call,
 	if (call->reply_size != call->reply_max)
 		return -EBADMSG;
 
-	/* unmarshall the reply once we've received all of it */
-	bp = call->buffer;
 	/* xdr_decode_AFSVolSync(&bp, call->replyX); */
 
 	_leave(" = 0 [done]");
-- 
1.7.1.rc1.21.gf3bd6