* [PATCH] UVC: use GFP_ATOMIC under spin lock.
@ 2012-11-19 21:34 Cyril Roelandt
2012-11-22 8:09 ` walter harms
0 siblings, 1 reply; 6+ messages in thread
From: Cyril Roelandt @ 2012-11-19 21:34 UTC (permalink / raw)
To: linux-kernel
Cc: linux-usb, gregkh, balbi, laurent.pinchart, kernel-janitors,
Cyril Roelandt
Found using the following semantic patch:
<spml>
@@
@@
spin_lock_irqsave(...);
... when != spin_unlock_irqrestore(...);
* GFP_KERNEL
</spml>
Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
---
drivers/usb/gadget/uvc_video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
index b0e53a8..79b4132 100644
--- a/drivers/usb/gadget/uvc_video.c
+++ b/drivers/usb/gadget/uvc_video.c
@@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
video->encode(req, video, buf);
/* Queue the USB request */
- if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
+ if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
printk(KERN_INFO "Failed to queue request (%d)\n", ret);
usb_ep_set_halt(video->ep);
spin_unlock_irqrestore(&video->queue.irqlock, flags);
--
1.7.10.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH] UVC: use GFP_ATOMIC under spin lock.
2012-11-19 21:34 [PATCH] UVC: use GFP_ATOMIC under spin lock Cyril Roelandt
@ 2012-11-22 8:09 ` walter harms
2012-11-22 12:22 ` Felipe Balbi
2012-11-25 1:58 ` [PATCH v2] " Cyril Roelandt
0 siblings, 2 replies; 6+ messages in thread
From: walter harms @ 2012-11-22 8:09 UTC (permalink / raw)
To: Cyril Roelandt
Cc: linux-kernel, linux-usb, gregkh, balbi, laurent.pinchart,
kernel-janitors
Am 19.11.2012 22:34, schrieb Cyril Roelandt:
> Found using the following semantic patch:
> <spml>
> @@
> @@
> spin_lock_irqsave(...);
> ... when != spin_unlock_irqrestore(...);
> * GFP_KERNEL
> </spml>
>
> Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
> ---
> drivers/usb/gadget/uvc_video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
> index b0e53a8..79b4132 100644
> --- a/drivers/usb/gadget/uvc_video.c
> +++ b/drivers/usb/gadget/uvc_video.c
> @@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
> video->encode(req, video, buf);
>
> /* Queue the USB request */
> - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> + if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
> printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> usb_ep_set_halt(video->ep);
> spin_unlock_irqrestore(&video->queue.irqlock, flags);
IMHO, this should be two lines, aka:
ret = usb_ep_queue(video->ep, req, GFP_KERNEL);
if (ret<0)
just my two cents,
re,
wh
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] UVC: use GFP_ATOMIC under spin lock.
2012-11-22 8:09 ` walter harms
@ 2012-11-22 12:22 ` Felipe Balbi
2012-11-22 12:38 ` Laurent Pinchart
2012-11-25 1:58 ` [PATCH v2] " Cyril Roelandt
1 sibling, 1 reply; 6+ messages in thread
From: Felipe Balbi @ 2012-11-22 12:22 UTC (permalink / raw)
To: walter harms
Cc: Cyril Roelandt, linux-kernel, linux-usb, gregkh, balbi,
laurent.pinchart, kernel-janitors
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On Thu, Nov 22, 2012 at 09:09:57AM +0100, walter harms wrote:
>
>
> Am 19.11.2012 22:34, schrieb Cyril Roelandt:
> > Found using the following semantic patch:
> > <spml>
> > @@
> > @@
> > spin_lock_irqsave(...);
> > ... when != spin_unlock_irqrestore(...);
> > * GFP_KERNEL
> > </spml>
> >
> > Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
> > ---
> > drivers/usb/gadget/uvc_video.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
> > index b0e53a8..79b4132 100644
> > --- a/drivers/usb/gadget/uvc_video.c
> > +++ b/drivers/usb/gadget/uvc_video.c
> > @@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
> > video->encode(req, video, buf);
> >
> > /* Queue the USB request */
> > - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> > + if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
> > printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> > usb_ep_set_halt(video->ep);
> > spin_unlock_irqrestore(&video->queue.irqlock, flags);
>
>
> IMHO, this should be two lines, aka:
>
> ret = usb_ep_queue(video->ep, req, GFP_KERNEL);
> if (ret<0)
correct, please resend with the fix.
--
balbi
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] UVC: use GFP_ATOMIC under spin lock.
2012-11-22 12:22 ` Felipe Balbi
@ 2012-11-22 12:38 ` Laurent Pinchart
0 siblings, 0 replies; 6+ messages in thread
From: Laurent Pinchart @ 2012-11-22 12:38 UTC (permalink / raw)
To: balbi
Cc: walter harms, Cyril Roelandt, linux-kernel, linux-usb, gregkh,
kernel-janitors
[-- Attachment #1: Type: text/plain, Size: 1446 bytes --]
On Thursday 22 November 2012 14:22:23 Felipe Balbi wrote:
> On Thu, Nov 22, 2012 at 09:09:57AM +0100, walter harms wrote:
> > Am 19.11.2012 22:34, schrieb Cyril Roelandt:
> > > Found using the following semantic patch:
> > > <spml>
> > > @@
> > > @@
> > > spin_lock_irqsave(...);
> > > ... when != spin_unlock_irqrestore(...);
> > > * GFP_KERNEL
> > > </spml>
> > >
> > > Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
> > > ---
> > >
> > > drivers/usb/gadget/uvc_video.c | 2 +-
> > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/drivers/usb/gadget/uvc_video.c
> > > b/drivers/usb/gadget/uvc_video.c index b0e53a8..79b4132 100644
> > > --- a/drivers/usb/gadget/uvc_video.c
> > > +++ b/drivers/usb/gadget/uvc_video.c
> > > @@ -309,7 +309,7 @@ uvc_video_pump(struct uvc_video *video)
> > >
> > > video->encode(req, video, buf);
> > >
> > > /* Queue the USB request */
> > >
> > > - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> > > + if ((ret = usb_ep_queue(video->ep, req, GFP_ATOMIC)) < 0) {
> > >
> > > printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> > > usb_ep_set_halt(video->ep);
> > > spin_unlock_irqrestore(&video->queue.irqlock, flags);
> >
> > IMHO, this should be two lines, aka:
> >
> > ret = usb_ep_queue(video->ep, req, GFP_KERNEL);
> > if (ret<0)
>
> correct, please resend with the fix.
I agree as well.
--
Regards,
Laurent Pinchart
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^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v2] UVC: use GFP_ATOMIC under spin lock.
2012-11-22 8:09 ` walter harms
2012-11-22 12:22 ` Felipe Balbi
@ 2012-11-25 1:58 ` Cyril Roelandt
2012-11-27 13:14 ` Laurent Pinchart
1 sibling, 1 reply; 6+ messages in thread
From: Cyril Roelandt @ 2012-11-25 1:58 UTC (permalink / raw)
To: linux-kernel
Cc: linux-usb, gregkh, balbi, laurent.pinchart, kernel-janitors,
Cyril Roelandt
Found using the following semantic patch:
<spml>
@@
@@
spin_lock_irqsave(...);
... when != spin_unlock_irqrestore(...);
* GFP_KERNEL
</spml>
Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
---
drivers/usb/gadget/uvc_video.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
index b0e53a8..cd067a6 100644
--- a/drivers/usb/gadget/uvc_video.c
+++ b/drivers/usb/gadget/uvc_video.c
@@ -309,7 +309,8 @@ uvc_video_pump(struct uvc_video *video)
video->encode(req, video, buf);
/* Queue the USB request */
- if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
+ ret = usb_ep_queue(video->ep, req, GFP_ATOMIC);
+ if (ret < 0) {
printk(KERN_INFO "Failed to queue request (%d)\n", ret);
usb_ep_set_halt(video->ep);
spin_unlock_irqrestore(&video->queue.irqlock, flags);
--
1.7.10.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v2] UVC: use GFP_ATOMIC under spin lock.
2012-11-25 1:58 ` [PATCH v2] " Cyril Roelandt
@ 2012-11-27 13:14 ` Laurent Pinchart
0 siblings, 0 replies; 6+ messages in thread
From: Laurent Pinchart @ 2012-11-27 13:14 UTC (permalink / raw)
To: Cyril Roelandt; +Cc: linux-kernel, linux-usb, gregkh, balbi, kernel-janitors
Hi Cyril,
Thank you for the patch.
On Sunday 25 November 2012 02:58:19 Cyril Roelandt wrote:
> Found using the following semantic patch:
> <spml>
> @@
> @@
> spin_lock_irqsave(...);
> ... when != spin_unlock_irqrestore(...);
> * GFP_KERNEL
> </spml>
>
> Signed-off-by: Cyril Roelandt <tipecaml@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
and applied to my tree
> ---
> drivers/usb/gadget/uvc_video.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/uvc_video.c b/drivers/usb/gadget/uvc_video.c
> index b0e53a8..cd067a6 100644
> --- a/drivers/usb/gadget/uvc_video.c
> +++ b/drivers/usb/gadget/uvc_video.c
> @@ -309,7 +309,8 @@ uvc_video_pump(struct uvc_video *video)
> video->encode(req, video, buf);
>
> /* Queue the USB request */
> - if ((ret = usb_ep_queue(video->ep, req, GFP_KERNEL)) < 0) {
> + ret = usb_ep_queue(video->ep, req, GFP_ATOMIC);
> + if (ret < 0) {
> printk(KERN_INFO "Failed to queue request (%d)\n", ret);
> usb_ep_set_halt(video->ep);
> spin_unlock_irqrestore(&video->queue.irqlock, flags);
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2012-11-27 13:13 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2012-11-19 21:34 [PATCH] UVC: use GFP_ATOMIC under spin lock Cyril Roelandt
2012-11-22 8:09 ` walter harms
2012-11-22 12:22 ` Felipe Balbi
2012-11-22 12:38 ` Laurent Pinchart
2012-11-25 1:58 ` [PATCH v2] " Cyril Roelandt
2012-11-27 13:14 ` Laurent Pinchart
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