* [PATCH] video, udlfb: Fix two build warning about 'ignoring return value'
@ 2011-04-14 8:17 ` Liu Yuan
0 siblings, 0 replies; 6+ messages in thread
From: Liu Yuan @ 2011-04-14 8:17 UTC (permalink / raw)
To: Paul Mundt; +Cc: open list:FRAMEBUFFER LAYER, open list
From: Liu Yuan <tailai.ly@taobao.com>
Build warning:
...
drivers/video/udlfb.c:1590: warning: ignoring return value of ‘device_create_file’, declared with attribute warn_unused_result
drivers/video/udlfb.c:1592: warning: ignoring return value of ‘device_create_bin_file’, declared with attribute warn_unused_result
So add two checks to get rid of 'em.
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
---
drivers/video/udlfb.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 68041d9..55d6de6 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
goto error;
}
- for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
- device_create_file(info->dev, &fb_device_attrs[i]);
+ for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
+ retval = device_create_file(info->dev, &fb_device_attrs[i]);
+ if (retval) {
+ pr_err("device_create_file failed %d\n", retval);
+ goto error;
+ }
+ }
- device_create_bin_file(info->dev, &edid_attr);
+ retval = device_create_bin_file(info->dev, &edid_attr);
+ if (retval) {
+ pr_err("device_create_bin_file failed %d\n", retval);
+ goto error;
+ }
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
--
1.7.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH] video, udlfb: Fix two build warning about 'ignoring return value'
@ 2011-04-14 8:17 ` Liu Yuan
0 siblings, 0 replies; 6+ messages in thread
From: Liu Yuan @ 2011-04-14 8:17 UTC (permalink / raw)
To: Paul Mundt; +Cc: open list:FRAMEBUFFER LAYER, open list
From: Liu Yuan <tailai.ly@taobao.com>
Build warning:
...
drivers/video/udlfb.c:1590: warning: ignoring return value of ‘device_create_file’, declared with attribute warn_unused_result
drivers/video/udlfb.c:1592: warning: ignoring return value of ‘device_create_bin_file’, declared with attribute warn_unused_result
So add two checks to get rid of 'em.
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
---
drivers/video/udlfb.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 68041d9..55d6de6 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
goto error;
}
- for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
- device_create_file(info->dev, &fb_device_attrs[i]);
+ for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
+ retval = device_create_file(info->dev, &fb_device_attrs[i]);
+ if (retval) {
+ pr_err("device_create_file failed %d\n", retval);
+ goto error;
+ }
+ }
- device_create_bin_file(info->dev, &edid_attr);
+ retval = device_create_bin_file(info->dev, &edid_attr);
+ if (retval) {
+ pr_err("device_create_bin_file failed %d\n", retval);
+ goto error;
+ }
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
--
1.7.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH] video, udlfb: Fix two build warning about 'ignoring return value'
2011-04-14 8:17 ` Liu Yuan
@ 2011-04-18 8:46 ` Paul Mundt
-1 siblings, 0 replies; 6+ messages in thread
From: Paul Mundt @ 2011-04-18 8:46 UTC (permalink / raw)
To: Liu Yuan; +Cc: linux-fbdev, linux-kernel
On Thu, Apr 14, 2011 at 04:17:50PM +0800, Liu Yuan wrote:
> Build warning:
> ...
> drivers/video/udlfb.c:1590: warning: ignoring return value of ???device_create_file???, declared with attribute warn_unused_result
> drivers/video/udlfb.c:1592: warning: ignoring return value of ???device_create_bin_file???, declared with attribute warn_unused_result
>
> So add two checks to get rid of 'em.
>
> Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
> ---
> drivers/video/udlfb.c | 15 ++++++++++++---
> 1 files changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
> index 68041d9..55d6de6 100644
> --- a/drivers/video/udlfb.c
> +++ b/drivers/video/udlfb.c
> @@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
> goto error;
> }
>
> - for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
> - device_create_file(info->dev, &fb_device_attrs[i]);
> + for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
> + retval = device_create_file(info->dev, &fb_device_attrs[i]);
> + if (retval) {
> + pr_err("device_create_file failed %d\n", retval);
> + goto error;
> + }
> + }
>
> - device_create_bin_file(info->dev, &edid_attr);
> + retval = device_create_bin_file(info->dev, &edid_attr);
> + if (retval) {
> + pr_err("device_create_bin_file failed %d\n", retval);
> + goto error;
> + }
>
While this will get rid of the warnings, it doesn't take care of cleaning
up the created files in the error case..
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] video, udlfb: Fix two build warning about 'ignoring return value'
@ 2011-04-18 8:46 ` Paul Mundt
0 siblings, 0 replies; 6+ messages in thread
From: Paul Mundt @ 2011-04-18 8:46 UTC (permalink / raw)
To: Liu Yuan; +Cc: linux-fbdev, linux-kernel
On Thu, Apr 14, 2011 at 04:17:50PM +0800, Liu Yuan wrote:
> Build warning:
> ...
> drivers/video/udlfb.c:1590: warning: ignoring return value of ???device_create_file???, declared with attribute warn_unused_result
> drivers/video/udlfb.c:1592: warning: ignoring return value of ???device_create_bin_file???, declared with attribute warn_unused_result
>
> So add two checks to get rid of 'em.
>
> Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
> ---
> drivers/video/udlfb.c | 15 ++++++++++++---
> 1 files changed, 12 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
> index 68041d9..55d6de6 100644
> --- a/drivers/video/udlfb.c
> +++ b/drivers/video/udlfb.c
> @@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
> goto error;
> }
>
> - for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
> - device_create_file(info->dev, &fb_device_attrs[i]);
> + for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
> + retval = device_create_file(info->dev, &fb_device_attrs[i]);
> + if (retval) {
> + pr_err("device_create_file failed %d\n", retval);
> + goto error;
> + }
> + }
>
> - device_create_bin_file(info->dev, &edid_attr);
> + retval = device_create_bin_file(info->dev, &edid_attr);
> + if (retval) {
> + pr_err("device_create_bin_file failed %d\n", retval);
> + goto error;
> + }
>
While this will get rid of the warnings, it doesn't take care of cleaning
up the created files in the error case..
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] video, udlfb: Fix two build warning about 'ignoring
2011-04-18 8:46 ` Paul Mundt
@ 2011-04-18 10:42 ` Liu Yuan
-1 siblings, 0 replies; 6+ messages in thread
From: Liu Yuan @ 2011-04-18 10:42 UTC (permalink / raw)
To: Paul Mundt; +Cc: linux-fbdev, linux-kernel
Ah, thanks for pointing it out. I'll prepare v2 patch for it.
Thanks,
Yuan
On Mon, Apr 18, 2011 at 4:46 PM, Paul Mundt <lethal@linux-sh.org> wrote:
> On Thu, Apr 14, 2011 at 04:17:50PM +0800, Liu Yuan wrote:
>> Build warning:
>> ...
>> drivers/video/udlfb.c:1590: warning: ignoring return value of ???device_create_file???, declared with attribute warn_unused_result
>> drivers/video/udlfb.c:1592: warning: ignoring return value of ???device_create_bin_file???, declared with attribute warn_unused_result
>>
>> So add two checks to get rid of 'em.
>>
>> Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
>> ---
>> drivers/video/udlfb.c | 15 ++++++++++++---
>> 1 files changed, 12 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
>> index 68041d9..55d6de6 100644
>> --- a/drivers/video/udlfb.c
>> +++ b/drivers/video/udlfb.c
>> @@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
>> goto error;
>> }
>>
>> - for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
>> - device_create_file(info->dev, &fb_device_attrs[i]);
>> + for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
>> + retval = device_create_file(info->dev, &fb_device_attrs[i]);
>> + if (retval) {
>> + pr_err("device_create_file failed %d\n", retval);
>> + goto error;
>> + }
>> + }
>>
>> - device_create_bin_file(info->dev, &edid_attr);
>> + retval = device_create_bin_file(info->dev, &edid_attr);
>> + if (retval) {
>> + pr_err("device_create_bin_file failed %d\n", retval);
>> + goto error;
>> + }
>>
>
> While this will get rid of the warnings, it doesn't take care of cleaning
> up the created files in the error case..
>
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH] video, udlfb: Fix two build warning about 'ignoring return value'
@ 2011-04-18 10:42 ` Liu Yuan
0 siblings, 0 replies; 6+ messages in thread
From: Liu Yuan @ 2011-04-18 10:42 UTC (permalink / raw)
To: Paul Mundt; +Cc: linux-fbdev, linux-kernel
Ah, thanks for pointing it out. I'll prepare v2 patch for it.
Thanks,
Yuan
On Mon, Apr 18, 2011 at 4:46 PM, Paul Mundt <lethal@linux-sh.org> wrote:
> On Thu, Apr 14, 2011 at 04:17:50PM +0800, Liu Yuan wrote:
>> Build warning:
>> ...
>> drivers/video/udlfb.c:1590: warning: ignoring return value of ???device_create_file???, declared with attribute warn_unused_result
>> drivers/video/udlfb.c:1592: warning: ignoring return value of ???device_create_bin_file???, declared with attribute warn_unused_result
>>
>> So add two checks to get rid of 'em.
>>
>> Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
>> ---
>> drivers/video/udlfb.c | 15 ++++++++++++---
>> 1 files changed, 12 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
>> index 68041d9..55d6de6 100644
>> --- a/drivers/video/udlfb.c
>> +++ b/drivers/video/udlfb.c
>> @@ -1586,10 +1586,19 @@ static int dlfb_usb_probe(struct usb_interface *interface,
>> goto error;
>> }
>>
>> - for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++)
>> - device_create_file(info->dev, &fb_device_attrs[i]);
>> + for (i = 0; i < ARRAY_SIZE(fb_device_attrs); i++) {
>> + retval = device_create_file(info->dev, &fb_device_attrs[i]);
>> + if (retval) {
>> + pr_err("device_create_file failed %d\n", retval);
>> + goto error;
>> + }
>> + }
>>
>> - device_create_bin_file(info->dev, &edid_attr);
>> + retval = device_create_bin_file(info->dev, &edid_attr);
>> + if (retval) {
>> + pr_err("device_create_bin_file failed %d\n", retval);
>> + goto error;
>> + }
>>
>
> While this will get rid of the warnings, it doesn't take care of cleaning
> up the created files in the error case..
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-04-18 10:42 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-04-14 8:17 [PATCH] video, udlfb: Fix two build warning about 'ignoring return value' Liu Yuan
2011-04-14 8:17 ` Liu Yuan
2011-04-18 8:46 ` Paul Mundt
2011-04-18 8:46 ` Paul Mundt
2011-04-18 10:42 ` [PATCH] video, udlfb: Fix two build warning about 'ignoring Liu Yuan
2011-04-18 10:42 ` [PATCH] video, udlfb: Fix two build warning about 'ignoring return value' Liu Yuan
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