[PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Girish Verma]

In xhci-ring.c, function inc_enq and inc_deq calculate the dma address
of trb but never used. 

Signed-off-by: Girish Verma <girish@circuitsutra.com>
---
 drivers/usb/host/xhci-ring.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3d9422f..dcd67c1 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -146,7 +146,6 @@ static void next_trb(struct xhci_hcd *xhci,
 static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
 {
 	union xhci_trb *next;
-	unsigned long long addr;
 
 	ring->deq_updates++;
 
@@ -168,7 +167,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
 		ring->dequeue = ring->deq_seg->trbs;
 		next = ring->dequeue;
 	}
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg, ring->dequeue);
 }
 
 /*
@@ -193,7 +191,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
 {
 	u32 chain;
 	union xhci_trb *next;
-	unsigned long long addr;
 
 	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
 	/* If this is not event ring, there is one less usable TRB */
@@ -245,7 +242,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
 		ring->enqueue = ring->enq_seg->trbs;
 		next = ring->enqueue;
 	}
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg, ring->enqueue);
 }
 
 /*
-- 

Re: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Sarah Sharp]

Hi Girish,

Sorry for taking a really long time to respond!  This is a good idea,
but your patch doesn't apply any more.  Can you update it against the
latest kernel and resend it?

Sarah Sharp

On Sun, May 13, 2012 at 08:59:02PM +0530, Girish Verma wrote:
> In xhci-ring.c, function inc_enq and inc_deq calculate the dma address
> of trb but never used. 
> 
> Signed-off-by: Girish Verma <girish@circuitsutra.com>
> ---
>  drivers/usb/host/xhci-ring.c |    4 ----
>  1 files changed, 0 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
> index 3d9422f..dcd67c1 100644
> --- a/drivers/usb/host/xhci-ring.c
> +++ b/drivers/usb/host/xhci-ring.c
> @@ -146,7 +146,6 @@ static void next_trb(struct xhci_hcd *xhci,
>  static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
>  {
>  	union xhci_trb *next;
> -	unsigned long long addr;
>  
>  	ring->deq_updates++;
>  
> @@ -168,7 +167,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
>  		ring->dequeue = ring->deq_seg->trbs;
>  		next = ring->dequeue;
>  	}
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg, ring->dequeue);
>  }
>  
>  /*
> @@ -193,7 +191,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
>  {
>  	u32 chain;
>  	union xhci_trb *next;
> -	unsigned long long addr;
>  
>  	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
>  	/* If this is not event ring, there is one less usable TRB */
> @@ -245,7 +242,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring,
>  		ring->enqueue = ring->enq_seg->trbs;
>  		next = ring->enqueue;
>  	}
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg, ring->enqueue);
>  }
>  
>  /*
> -- 
> 
> 

[PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Girish Verma]

Resending patch with latest kernel code:
In xhci-ring.c, function inc_enq and inc_deq calculate the dma address
of trb but never used. 



Signed-off-by: Girish Verma <girish@circuitsutra.com>
---
 drivers/usb/host/xhci-ring.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 643c2f3..5c5c47b 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -145,7 +145,6 @@ static void next_trb(struct xhci_hcd *xhci,
  */
 static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
 {
-	unsigned long long addr;
 
 	ring->deq_updates++;
 
@@ -176,7 +175,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
xhci_ring *ring)
 		}
 	} while (last_trb(xhci, ring, ring->deq_seg, ring->dequeue));
 
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
ring->dequeue);
 }
 
 /*
@@ -201,7 +199,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
xhci_ring *ring,
 {
 	u32 chain;
 	union xhci_trb *next;
-	unsigned long long addr;
 
 	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
 	/* If this is not event ring, there is one less usable TRB */
@@ -253,7 +250,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
xhci_ring *ring,
 		ring->enqueue = ring->enq_seg->trbs;
 		next = ring->enqueue;
 	}
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg,
ring->enqueue);
 }
 
 /*
-- 
1.7.0.4

Re: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Sarah Sharp]

Hmm, your patch got corrupted:

sarah@xanatos:~/git/kernels/xhci$ git am -s -3 ~/Maildir.fetchmail/.to-apply-next/
Applying: USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function
fatal: corrupt patch at line 18
Repository lacks necessary blobs to fall back on 3-way merge.
Cannot fall back to three-way merge.
Patch failed at 0001 USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function
When you have resolved this problem run "git am --resolved".
If you would prefer to skip this patch, instead run "git am --skip".
To restore the original branch and stop patching run "git am --abort".

It looks like your mail client attempted to line wrap it.  You might
want to use mutt, thunderbird, or maybe even the plain text gmail
interface to resend this.

Also...

On Thu, Sep 06, 2012 at 09:17:33PM +0530, Girish Verma wrote:
> Resending patch with latest kernel code:

^^^ Don't include this line in your patch description.  Otherwise it
will be in the git history forever.  If you want to add comments to me
like this, you can edit the patch before you send it in your email
client, and put comments...

> In xhci-ring.c, function inc_enq and inc_deq calculate the dma address
> of trb but never used. 
> 
> 
> 
> Signed-off-by: Girish Verma <girish@circuitsutra.com>
> ---

...here, after the --- line and before the diff stat.  patch will ignore
any lines after the dash line up until the first @ line.

Finally, please remove the two newlines between your patch description
and the signed-off-by line.  Thanks!

>  drivers/usb/host/xhci-ring.c |    4 ----
>  1 files changed, 0 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
> index 643c2f3..5c5c47b 100644
> --- a/drivers/usb/host/xhci-ring.c
> +++ b/drivers/usb/host/xhci-ring.c
> @@ -145,7 +145,6 @@ static void next_trb(struct xhci_hcd *xhci,
>   */
>  static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
>  {
> -	unsigned long long addr;
>  
>  	ring->deq_updates++;
>  
> @@ -176,7 +175,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
> xhci_ring *ring)
>  		}
>  	} while (last_trb(xhci, ring, ring->deq_seg, ring->dequeue));
>  
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
> ring->dequeue);
>  }
>  
>  /*
> @@ -201,7 +199,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
> xhci_ring *ring,
>  {
>  	u32 chain;
>  	union xhci_trb *next;
> -	unsigned long long addr;
>  
>  	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
>  	/* If this is not event ring, there is one less usable TRB */
> @@ -253,7 +250,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
> xhci_ring *ring,
>  		ring->enqueue = ring->enq_seg->trbs;
>  		next = ring->enqueue;
>  	}
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg,
> ring->enqueue);
>  }
>  
>  /*
> -- 
> 1.7.0.4
> 
> 

RE: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Yuhong Bao]

> It looks like your mail client attempted to line wrap it. You might
> want to use mutt, thunderbird, or maybe even the plain text gmail
> interface to resend this.
If anyone is using Outlook, see this:
https://lkml.org/lkml/2011/1/25/587

Yuhong Bao 		 	   		  

Re: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Sergei Shtylyov]

Hello.

On 06-09-2012 19:47, Girish Verma wrote:

> Resending patch with latest kernel code:

    That comment should have been put after the --- tear line.

> In xhci-ring.c, function inc_enq and inc_deq calculate the dma address
> of trb but never used.



> Signed-off-by: Girish Verma <girish@circuitsutra.com>
> ---
>   drivers/usb/host/xhci-ring.c |    4 ----
>   1 files changed, 0 insertions(+), 4 deletions(-)

> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
> index 643c2f3..5c5c47b 100644
> --- a/drivers/usb/host/xhci-ring.c
> +++ b/drivers/usb/host/xhci-ring.c
> @@ -145,7 +145,6 @@ static void next_trb(struct xhci_hcd *xhci,
>    */
>   static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
>   {
> -	unsigned long long addr;
>
>   	ring->deq_updates++;
>
> @@ -176,7 +175,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
> xhci_ring *ring)
>   		}
>   	} while (last_trb(xhci, ring, ring->deq_seg, ring->dequeue));
>
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
> ring->dequeue);
>   }
>
>   /*
> @@ -201,7 +199,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
> xhci_ring *ring,
>   {
>   	u32 chain;
>   	union xhci_trb *next;
> -	unsigned long long addr;
>
>   	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
>   	/* If this is not event ring, there is one less usable TRB */
> @@ -253,7 +250,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
> xhci_ring *ring,
>   		ring->enqueue = ring->enq_seg->trbs;
>   		next = ring->enqueue;
>   	}
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg,
> ring->enqueue);

    The patch is line wrapped. Should be easy to fix by hand when applying 
though...

WBR, Sergei

[PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Girish Verma]

Hi,

in xhci-ring.c, function inc_enq and inc_deq calculate the dma address
of trb but never used. This calculation may be used for debugging
purpose, in that case this code should be part of debug flag.

Signed-off-by: Girish Verma <girish@circuitsutra.com>
---
 drivers/usb/host/xhci-ring.c |    4 ----
 1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3d9422f..dcd67c1 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -146,7 +146,6 @@ static void next_trb(struct xhci_hcd *xhci,
 static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring)
 {
 	union xhci_trb *next;
-	unsigned long long addr;

 	ring->deq_updates++;

@@ -168,7 +167,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
xhci_ring *ring)
 		ring->dequeue = ring->deq_seg->trbs;
 		next = ring->dequeue;
 	}
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
ring->dequeue);
 }

 /*
@@ -193,7 +191,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
xhci_ring *ring,
 {
 	u32 chain;
 	union xhci_trb *next;
-	unsigned long long addr;

 	chain = le32_to_cpu(ring->enqueue->generic.field[3]) & TRB_CHAIN;
 	/* If this is not event ring, there is one less usable TRB */
@@ -245,7 +242,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct
xhci_ring *ring,
 		ring->enqueue = ring->enq_seg->trbs;
 		next = ring->enqueue;
 	}
-	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->enq_seg,
ring->enqueue);
 }

 /*
--

Re: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Sergei Shtylyov]

Hello.

On 13-05-2012 5:06, Girish Verma wrote:

> Hi,

    Greeting shouldn't be a part of the changelog.

> in xhci-ring.c, function inc_enq and inc_deq calculate the dma address
> of trb but never used. This calculation may be used for debugging
> purpose, in that case this code should be part of debug flag.

> Signed-off-by: Girish Verma<girish@circuitsutra.com>
> ---
>   drivers/usb/host/xhci-ring.c |    4 ----
>   1 files changed, 0 insertions(+), 4 deletions(-)

> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
> index 3d9422f..dcd67c1 100644
> --- a/drivers/usb/host/xhci-ring.c
> +++ b/drivers/usb/host/xhci-ring.c
[...]
> @@ -168,7 +167,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
> xhci_ring *ring)
>   		ring->dequeue = ring->deq_seg->trbs;
>   		next = ring->dequeue;
>   	}
> -	addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
> ring->dequeue);

    Your patch is line-wrapped. Maybe the amintainer would be able to fix this 
tho...

WBR, Sergei

Re: [PATCH] USB: XHCI: xhci-ring: Remove unused dma address calculation in inc_enq and inc_deq function

[Girish Verma]

Thank for the information, I will resend the patch

On Sun, May 13, 2012 at 7:04 PM, Sergei Shtylyov <sshtylyov@mvista.com> wrote:
> Hello.
>
> On 13-05-2012 5:06, Girish Verma wrote:
>
>> Hi,
>
>
>   Greeting shouldn't be a part of the changelog.
>
>
>> in xhci-ring.c, function inc_enq and inc_deq calculate the dma address
>> of trb but never used. This calculation may be used for debugging
>> purpose, in that case this code should be part of debug flag.
>
>
>> Signed-off-by: Girish Verma<girish@circuitsutra.com>
>> ---
>>  drivers/usb/host/xhci-ring.c |    4 ----
>>  1 files changed, 0 insertions(+), 4 deletions(-)
>
>
>> diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
>> index 3d9422f..dcd67c1 100644
>> --- a/drivers/usb/host/xhci-ring.c
>> +++ b/drivers/usb/host/xhci-ring.c
>
> [...]
>
>> @@ -168,7 +167,6 @@ static void inc_deq(struct xhci_hcd *xhci, struct
>> xhci_ring *ring)
>>                ring->dequeue = ring->deq_seg->trbs;
>>                next = ring->dequeue;
>>        }
>> -       addr = (unsigned long long) xhci_trb_virt_to_dma(ring->deq_seg,
>> ring->dequeue);
>
>
>   Your patch is line-wrapped. Maybe the amintainer would be able to fix this
> tho...
>
> WBR, Sergei