From: Liu Yuan <tailai.ly@xxxxxxxxxx>
Build warning:
...
drivers/video/udlfb.c:1590: warning: ignoring return value of âdevice_create_fileâ, declared with attribute warn_unused_result
drivers/video/udlfb.c:1592: warning: ignoring return value of âdevice_create_bin_fileâ, 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;
+ }
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
--
1.7.1
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