* [PATCH] usb/gadget: fix gadgetfs aio support
@ 2016-07-08 6:15 Mathieu Laurendeau
2016-07-08 9:24 ` kbuild test robot
` (3 more replies)
0 siblings, 4 replies; 7+ messages in thread
From: Mathieu Laurendeau @ 2016-07-08 6:15 UTC (permalink / raw)
To: linux-usb; +Cc: Felipe Balbi, stable
Hi,
Since commit 7fe3976e0f3ab26f8ffd9430d3d2a19a70f2c8d2 ("gadget: switch
ep_io_operations to ->read_iter/->write_iter") io submissions fail with
ENODEV.
Fixes: 7fe3976e0f3a ("gadget: switch ep_io_operations to
->read_iter/->write_iter")
Signed-off-by: Mathieu Laurendeau <mat.lau@laposte.net>
---
drivers/usb/gadget/legacy/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index aa3707b..120a03a 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -542,7 +542,7 @@ static ssize_t ep_aio(struct kiocb *iocb,
*/
spin_lock_irq(&epdata->dev->lock);
value = -ENODEV;
- if (unlikely(epdata->ep))
+ if (unlikely(epdata->ep) == NULL)
goto fail;
req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH] usb/gadget: fix gadgetfs aio support
2016-07-08 6:15 [PATCH] usb/gadget: fix gadgetfs aio support Mathieu Laurendeau
@ 2016-07-08 9:24 ` kbuild test robot
2016-07-08 9:34 ` kbuild test robot
` (2 subsequent siblings)
3 siblings, 0 replies; 7+ messages in thread
From: kbuild test robot @ 2016-07-08 9:24 UTC (permalink / raw)
To: Mathieu Laurendeau; +Cc: kbuild-all, linux-usb, Felipe Balbi, stable
[-- Attachment #1: Type: text/plain, Size: 1825 bytes --]
Hi,
[auto build test WARNING on balbi-usb/next]
[also build test WARNING on v4.7-rc6 next-20160707]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Mathieu-Laurendeau/usb-gadget-fix-gadgetfs-aio-support/20160708-164431
base: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next
config: i386-randconfig-r0-07081252 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All warnings (new ones prefixed by >>):
drivers/usb/gadget/legacy/inode.c: In function 'ep_aio':
>> drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^~
vim +545 drivers/usb/gadget/legacy/inode.c
529 ssize_t value;
530
531 iocb->private = priv;
532 priv->iocb = iocb;
533
534 kiocb_set_cancel_fn(iocb, ep_aio_cancel);
535 get_ep(epdata);
536 priv->epdata = epdata;
537 priv->actual = 0;
538 priv->mm = current->mm; /* mm teardown waits for iocbs in exit_aio() */
539
540 /* each kiocb is coupled to one usb_request, but we can't
541 * allocate or submit those if the host disconnected.
542 */
543 spin_lock_irq(&epdata->dev->lock);
544 value = -ENODEV;
> 545 if (unlikely(epdata->ep) == NULL)
546 goto fail;
547
548 req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
549 value = -ENOMEM;
550 if (unlikely(!req))
551 goto fail;
552
553 priv->req = req;
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 31675 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] usb/gadget: fix gadgetfs aio support
2016-07-08 6:15 [PATCH] usb/gadget: fix gadgetfs aio support Mathieu Laurendeau
2016-07-08 9:24 ` kbuild test robot
@ 2016-07-08 9:34 ` kbuild test robot
2016-07-08 10:00 ` kbuild test robot
2016-07-08 11:01 ` Sergei Shtylyov
3 siblings, 0 replies; 7+ messages in thread
From: kbuild test robot @ 2016-07-08 9:34 UTC (permalink / raw)
To: Mathieu Laurendeau; +Cc: kbuild-all, linux-usb, Felipe Balbi, stable
[-- Attachment #1: Type: text/plain, Size: 4900 bytes --]
Hi,
[auto build test WARNING on balbi-usb/next]
[also build test WARNING on v4.7-rc6 next-20160707]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Mathieu-Laurendeau/usb-gadget-fix-gadgetfs-aio-support/20160708-164431
base: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next
config: x86_64-randconfig-s5-07081546 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from include/linux/init.h:4:0,
from drivers/usb/gadget/legacy/inode.c:16:
drivers/usb/gadget/legacy/inode.c: In function 'ep_aio':
drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
include/linux/compiler.h:151:30: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
include/linux/compiler.h:151:42: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
include/linux/compiler.h:162:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^~~~
>> drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
--
In file included from /kbuild/src/stress/include/linux/init.h:4:0,
from /kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:16:
/kbuild/src/stress/drivers/usb/gadget/legacy/inode.c: In function 'ep_aio':
/kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
/kbuild/src/stress/include/linux/compiler.h:151:30: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> /kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
/kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
/kbuild/src/stress/include/linux/compiler.h:151:42: note: in definition of macro '__trace_if'
if (__builtin_constant_p(!!(cond)) ? !!(cond) : \
^~~~
>> /kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
/kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^
/kbuild/src/stress/include/linux/compiler.h:162:16: note: in definition of macro '__trace_if'
______r = !!(cond); \
^~~~
>> /kbuild/src/stress/drivers/usb/gadget/legacy/inode.c:545:2: note: in expansion of macro 'if'
if (unlikely(epdata->ep) == NULL)
^~
vim +/if +545 drivers/usb/gadget/legacy/inode.c
529 ssize_t value;
530
531 iocb->private = priv;
532 priv->iocb = iocb;
533
534 kiocb_set_cancel_fn(iocb, ep_aio_cancel);
535 get_ep(epdata);
536 priv->epdata = epdata;
537 priv->actual = 0;
538 priv->mm = current->mm; /* mm teardown waits for iocbs in exit_aio() */
539
540 /* each kiocb is coupled to one usb_request, but we can't
541 * allocate or submit those if the host disconnected.
542 */
543 spin_lock_irq(&epdata->dev->lock);
544 value = -ENODEV;
> 545 if (unlikely(epdata->ep) == NULL)
546 goto fail;
547
548 req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
549 value = -ENOMEM;
550 if (unlikely(!req))
551 goto fail;
552
553 priv->req = req;
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 31636 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] usb/gadget: fix gadgetfs aio support
2016-07-08 6:15 [PATCH] usb/gadget: fix gadgetfs aio support Mathieu Laurendeau
2016-07-08 9:24 ` kbuild test robot
2016-07-08 9:34 ` kbuild test robot
@ 2016-07-08 10:00 ` kbuild test robot
2016-07-08 11:01 ` Sergei Shtylyov
3 siblings, 0 replies; 7+ messages in thread
From: kbuild test robot @ 2016-07-08 10:00 UTC (permalink / raw)
To: Mathieu Laurendeau; +Cc: kbuild-all, linux-usb, Felipe Balbi, stable
Hi,
[auto build test WARNING on balbi-usb/next]
[also build test WARNING on v4.7-rc6 next-20160707]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Mathieu-Laurendeau/usb-gadget-fix-gadgetfs-aio-support/20160708-164431
base: https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git next
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
include/linux/compiler.h:232:8: sparse: attribute 'no_sanitize_address': unknown attribute
>> drivers/usb/gadget/legacy/inode.c:545:34: sparse: incompatible types for operation (==)
drivers/usb/gadget/legacy/inode.c:545:34: left side has type int
drivers/usb/gadget/legacy/inode.c:545:34: right side has type void *
drivers/usb/gadget/legacy/inode.c: In function 'ep_aio':
drivers/usb/gadget/legacy/inode.c:545:27: warning: comparison between pointer and integer
if (unlikely(epdata->ep) == NULL)
^~
vim +545 drivers/usb/gadget/legacy/inode.c
529 ssize_t value;
530
531 iocb->private = priv;
532 priv->iocb = iocb;
533
534 kiocb_set_cancel_fn(iocb, ep_aio_cancel);
535 get_ep(epdata);
536 priv->epdata = epdata;
537 priv->actual = 0;
538 priv->mm = current->mm; /* mm teardown waits for iocbs in exit_aio() */
539
540 /* each kiocb is coupled to one usb_request, but we can't
541 * allocate or submit those if the host disconnected.
542 */
543 spin_lock_irq(&epdata->dev->lock);
544 value = -ENODEV;
> 545 if (unlikely(epdata->ep) == NULL)
546 goto fail;
547
548 req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
549 value = -ENOMEM;
550 if (unlikely(!req))
551 goto fail;
552
553 priv->req = req;
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] usb/gadget: fix gadgetfs aio support
2016-07-08 6:15 [PATCH] usb/gadget: fix gadgetfs aio support Mathieu Laurendeau
` (2 preceding siblings ...)
2016-07-08 10:00 ` kbuild test robot
@ 2016-07-08 11:01 ` Sergei Shtylyov
2016-07-08 11:28 ` Mathieu Laurendeau
3 siblings, 1 reply; 7+ messages in thread
From: Sergei Shtylyov @ 2016-07-08 11:01 UTC (permalink / raw)
To: Mathieu Laurendeau, linux-usb; +Cc: Felipe Balbi, stable
Hello.
On 7/8/2016 9:15 AM, Mathieu Laurendeau wrote:
> Hi,
Greetings should not be a part of the patch description.
> Since commit 7fe3976e0f3ab26f8ffd9430d3d2a19a70f2c8d2 ("gadget: switch
> ep_io_operations to ->read_iter/->write_iter") io submissions fail with
> ENODEV.
>
> Fixes: 7fe3976e0f3a ("gadget: switch ep_io_operations to
> ->read_iter/->write_iter")
> Signed-off-by: Mathieu Laurendeau <mat.lau@laposte.net>
> ---
> drivers/usb/gadget/legacy/inode.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
> index aa3707b..120a03a 100644
> --- a/drivers/usb/gadget/legacy/inode.c
> +++ b/drivers/usb/gadget/legacy/inode.c
> @@ -542,7 +542,7 @@ static ssize_t ep_aio(struct kiocb *iocb,
> */
> spin_lock_irq(&epdata->dev->lock);
> value = -ENODEV;
> - if (unlikely(epdata->ep))
> + if (unlikely(epdata->ep) == NULL)
This placement of the inner parens doesn't make sense, you should enclose
the whole comparison.
[...]
MBR, Sergei
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH] usb/gadget: fix gadgetfs aio support
2016-07-08 11:01 ` Sergei Shtylyov
@ 2016-07-08 11:28 ` Mathieu Laurendeau
0 siblings, 0 replies; 7+ messages in thread
From: Mathieu Laurendeau @ 2016-07-08 11:28 UTC (permalink / raw)
To: Sergei Shtylyov, linux-usb; +Cc: Felipe Balbi, stable
I'll resend the patch. Sorry for the noise.
Le 08/07/2016 13:01, Sergei Shtylyov a écrit :
> Hello.
>
> On 7/8/2016 9:15 AM, Mathieu Laurendeau wrote:
>
>> Hi,
>
> Greetings should not be a part of the patch description.
>
>> Since commit 7fe3976e0f3ab26f8ffd9430d3d2a19a70f2c8d2 ("gadget: switch
>> ep_io_operations to ->read_iter/->write_iter") io submissions fail with
>> ENODEV.
>>
>> Fixes: 7fe3976e0f3a ("gadget: switch ep_io_operations to
>> ->read_iter/->write_iter")
>> Signed-off-by: Mathieu Laurendeau <mat.lau@laposte.net>
>> ---
>> drivers/usb/gadget/legacy/inode.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
>> index aa3707b..120a03a 100644
>> --- a/drivers/usb/gadget/legacy/inode.c
>> +++ b/drivers/usb/gadget/legacy/inode.c
>> @@ -542,7 +542,7 @@ static ssize_t ep_aio(struct kiocb *iocb,
>> */
>> spin_lock_irq(&epdata->dev->lock);
>> value = -ENODEV;
>> - if (unlikely(epdata->ep))
>> + if (unlikely(epdata->ep) == NULL)
>
> This placement of the inner parens doesn't make sense, you should enclose the whole comparison.
>
> [...]
>
> MBR, Sergei
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH] usb/gadget: fix gadgetfs aio support.
@ 2016-07-15 12:58 Mathieu Laurendeau
0 siblings, 0 replies; 7+ messages in thread
From: Mathieu Laurendeau @ 2016-07-15 12:58 UTC (permalink / raw)
To: balbi; +Cc: gregkh, linux-usb, linux-kernel, stable
Fix io submissions failing with ENODEV.
Signed-off-by: Mathieu Laurendeau <mat.lau@laposte.net>
Fixes: 7fe3976e0f3a ("gadget: switch ep_io_operations to ->read_iter/->write_iter")
---
drivers/usb/gadget/legacy/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index aa3707b..be64798 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -542,7 +542,7 @@ static ssize_t ep_aio(struct kiocb *iocb,
*/
spin_lock_irq(&epdata->dev->lock);
value = -ENODEV;
- if (unlikely(epdata->ep))
+ if (unlikely(epdata->ep == NULL))
goto fail;
req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
--
2.7.4
^ permalink raw reply related [flat|nested] 7+ messages in thread
end of thread, other threads:[~2016-07-15 13:20 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-07-08 6:15 [PATCH] usb/gadget: fix gadgetfs aio support Mathieu Laurendeau
2016-07-08 9:24 ` kbuild test robot
2016-07-08 9:34 ` kbuild test robot
2016-07-08 10:00 ` kbuild test robot
2016-07-08 11:01 ` Sergei Shtylyov
2016-07-08 11:28 ` Mathieu Laurendeau
2016-07-15 12:58 Mathieu Laurendeau
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