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@xxxxxxxxxx>
> ---
> 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..
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