[PATCH] snd: aica - fix annoying compiler warning

[PATCH] snd: aica - fix annoying compiler warning

[Adrian McMenamin]

Cast pointer to data member of struct firmware as a void to end an
annoying compiler warning.

fix annoying compiler warning

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
---

diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index 7c920f3..822b119 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -567,7 +567,7 @@ static int load_aica_firmware(void)
 		return err;
 	/* write firware into memory */
 	spu_disable();
-	spu_memload(0, fw_entry->data, fw_entry->size);
+	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
 	spu_enable();
 	release_firmware(fw_entry);
 	return err;

Re: [PATCH] snd: aica - fix annoying compiler warning

[Takashi Iwai]

At Sun, 15 Mar 2009 22:05:40 +0000,
Adrian McMenamin wrote:
> 
> Cast pointer to data member of struct firmware as a void to end an
> annoying compiler warning.
> 
> fix annoying compiler warning
> 
> Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> ---
> 
> diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> index 7c920f3..822b119 100644
> --- a/sound/sh/aica.c
> +++ b/sound/sh/aica.c
> @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
>  		return err;
>  	/* write firware into memory */
>  	spu_disable();
> -	spu_memload(0, fw_entry->data, fw_entry->size);
> +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);

IMO, it's better to fix spu_memload() to take const pointer instead of 
cast.


thanks,

Takashi

Re: [PATCH] snd: aica - fix annoying compiler warning

[Adrian McMenamin]

On Mon, 2009-03-16 at 07:31 +0100, Takashi Iwai wrote:
> At Sun, 15 Mar 2009 22:05:40 +0000,
> Adrian McMenamin wrote:
> > 
> > Cast pointer to data member of struct firmware as a void to end an
> > annoying compiler warning.
> > 
> > fix annoying compiler warning
> > 
> > Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> > ---
> > 
> > diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> > index 7c920f3..822b119 100644
> > --- a/sound/sh/aica.c
> > +++ b/sound/sh/aica.c
> > @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
> >  		return err;
> >  	/* write firware into memory */
> >  	spu_disable();
> > -	spu_memload(0, fw_entry->data, fw_entry->size);
> > +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
> 
> IMO, it's better to fix spu_memload() to take const pointer instead of 
> cast.
> 

If that's what you want I can do that but it adds to kernel bloat by
having two functions essentially do the same thing.

Re: [PATCH] snd: aica - fix annoying compiler warning

[Takashi Iwai]

At Mon, 16 Mar 2009 07:54:09 +0000,
Adrian McMenamin wrote:
> 
> On Mon, 2009-03-16 at 07:31 +0100, Takashi Iwai wrote:
> > At Sun, 15 Mar 2009 22:05:40 +0000,
> > Adrian McMenamin wrote:
> > > 
> > > Cast pointer to data member of struct firmware as a void to end an
> > > annoying compiler warning.
> > > 
> > > fix annoying compiler warning
> > > 
> > > Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> > > ---
> > > 
> > > diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> > > index 7c920f3..822b119 100644
> > > --- a/sound/sh/aica.c
> > > +++ b/sound/sh/aica.c
> > > @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
> > >  		return err;
> > >  	/* write firware into memory */
> > >  	spu_disable();
> > > -	spu_memload(0, fw_entry->data, fw_entry->size);
> > > +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
> > 
> > IMO, it's better to fix spu_memload() to take const pointer instead of 
> > cast.
> > 
> 
> If that's what you want I can do that but it adds to kernel bloat by
> having two functions essentially do the same thing.

I meant a fix like below...


Takashi

---
diff --git a/sound/sh/aica.c b/sound/sh/aica.c
index f551233..fad0c47 100644
--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -119,10 +119,10 @@ static void spu_memset(u32 toi, u32 what, int length)
 }
 
 /* spu_memload - write to SPU address space */
-static void spu_memload(u32 toi, void *from, int length)
+static void spu_memload(u32 toi, const void *from, int length)
 {
 	unsigned long flags;
-	u32 *froml = from;
+	const u32 *froml = from;
 	u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
 	int i;
 	u32 val;

Re: [PATCH] snd: aica - fix annoying compiler warning

[Paul Mundt]

On Mon, Mar 16, 2009 at 08:59:20AM +0100, Takashi Iwai wrote:
> At Mon, 16 Mar 2009 07:54:09 +0000,
> Adrian McMenamin wrote:
> > 
> > On Mon, 2009-03-16 at 07:31 +0100, Takashi Iwai wrote:
> > > At Sun, 15 Mar 2009 22:05:40 +0000,
> > > Adrian McMenamin wrote:
> > > > 
> > > > Cast pointer to data member of struct firmware as a void to end an
> > > > annoying compiler warning.
> > > > 
> > > > fix annoying compiler warning
> > > > 
> > > > Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> > > > ---
> > > > 
> > > > diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> > > > index 7c920f3..822b119 100644
> > > > --- a/sound/sh/aica.c
> > > > +++ b/sound/sh/aica.c
> > > > @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
> > > >  		return err;
> > > >  	/* write firware into memory */
> > > >  	spu_disable();
> > > > -	spu_memload(0, fw_entry->data, fw_entry->size);
> > > > +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
> > > 
> > > IMO, it's better to fix spu_memload() to take const pointer instead of 
> > > cast.
> > > 
> > 
> > If that's what you want I can do that but it adds to kernel bloat by
> > having two functions essentially do the same thing.
> 
> I meant a fix like below...
> 
Is anything happening with this, or should I just ignore it? 

> ---
> diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> index f551233..fad0c47 100644
> --- a/sound/sh/aica.c
> +++ b/sound/sh/aica.c
> @@ -119,10 +119,10 @@ static void spu_memset(u32 toi, u32 what, int length)
>  }
>  
>  /* spu_memload - write to SPU address space */
> -static void spu_memload(u32 toi, void *from, int length)
> +static void spu_memload(u32 toi, const void *from, int length)
>  {
>  	unsigned long flags;
> -	u32 *froml = from;
> +	const u32 *froml = from;
>  	u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
>  	int i;
>  	u32 val;
> --
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Re: [PATCH] snd: aica - fix annoying compiler warning

[Adrian McMenamin]

On Tue, 2009-03-31 at 08:10 +0900, Paul Mundt wrote:
> On Mon, Mar 16, 2009 at 08:59:20AM +0100, Takashi Iwai wrote:
> > At Mon, 16 Mar 2009 07:54:09 +0000,
> > Adrian McMenamin wrote:
> > > 
> > > On Mon, 2009-03-16 at 07:31 +0100, Takashi Iwai wrote:
> > > > At Sun, 15 Mar 2009 22:05:40 +0000,
> > > > Adrian McMenamin wrote:
> > > > > 
> > > > > Cast pointer to data member of struct firmware as a void to end an
> > > > > annoying compiler warning.
> > > > > 
> > > > > fix annoying compiler warning
> > > > > 
> > > > > Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> > > > > ---
> > > > > 
> > > > > diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> > > > > index 7c920f3..822b119 100644
> > > > > --- a/sound/sh/aica.c
> > > > > +++ b/sound/sh/aica.c
> > > > > @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
> > > > >  		return err;
> > > > >  	/* write firware into memory */
> > > > >  	spu_disable();
> > > > > -	spu_memload(0, fw_entry->data, fw_entry->size);
> > > > > +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
> > > > 
> > > > IMO, it's better to fix spu_memload() to take const pointer instead of 
> > > > cast.
> > > > 
> > > 
> > > If that's what you want I can do that but it adds to kernel bloat by
> > > having two functions essentially do the same thing.
> > 
> > I meant a fix like below...
> > 
> Is anything happening with this, or should I just ignore it? 
> 

I though Takashi's fix was fine/obvious but it doesn't appear to have
been pushed upstream (yet?)

Re: [PATCH] snd: aica - fix annoying compiler warning

[Takashi Iwai]

At Thu, 02 Apr 2009 00:41:50 +0100,
Adrian McMenamin wrote:
> 
> On Tue, 2009-03-31 at 08:10 +0900, Paul Mundt wrote:
> > On Mon, Mar 16, 2009 at 08:59:20AM +0100, Takashi Iwai wrote:
> > > At Mon, 16 Mar 2009 07:54:09 +0000,
> > > Adrian McMenamin wrote:
> > > > 
> > > > On Mon, 2009-03-16 at 07:31 +0100, Takashi Iwai wrote:
> > > > > At Sun, 15 Mar 2009 22:05:40 +0000,
> > > > > Adrian McMenamin wrote:
> > > > > > 
> > > > > > Cast pointer to data member of struct firmware as a void to end an
> > > > > > annoying compiler warning.
> > > > > > 
> > > > > > fix annoying compiler warning
> > > > > > 
> > > > > > Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
> > > > > > ---
> > > > > > 
> > > > > > diff --git a/sound/sh/aica.c b/sound/sh/aica.c
> > > > > > index 7c920f3..822b119 100644
> > > > > > --- a/sound/sh/aica.c
> > > > > > +++ b/sound/sh/aica.c
> > > > > > @@ -567,7 +567,7 @@ static int load_aica_firmware(void)
> > > > > >  		return err;
> > > > > >  	/* write firware into memory */
> > > > > >  	spu_disable();
> > > > > > -	spu_memload(0, fw_entry->data, fw_entry->size);
> > > > > > +	spu_memload(0, (void *)fw_entry->data, fw_entry->size);
> > > > > 
> > > > > IMO, it's better to fix spu_memload() to take const pointer instead of 
> > > > > cast.
> > > > > 
> > > > 
> > > > If that's what you want I can do that but it adds to kernel bloat by
> > > > having two functions essentially do the same thing.
> > > 
> > > I meant a fix like below...
> > > 
> > Is anything happening with this, or should I just ignore it? 
> > 
> 
> I though Takashi's fix was fine/obvious but it doesn't appear to have
> been pushed upstream (yet?)

Well, then it'd be appreciated if you repost your patch with my fix.

thanks,

Takashi