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authorLiu Yuan <tailai.ly@taobao.com>2011-04-18 10:44:38 +0000
committerPaul Mundt <lethal@linux-sh.org>2011-05-24 16:07:50 +0900
commit94cd1ae2fd251fd8206c043ce91a99a45439a116 (patch)
tree1267c47adb8cfb53f7070c266c78b77d423a9f15 /drivers/video/udlfb.c
parent6dbdf2a1cee23c34a66a35cfa2ae48e62e268dcb (diff)
downloadblackbird-op-linux-94cd1ae2fd251fd8206c043ce91a99a45439a116.tar.gz
blackbird-op-linux-94cd1ae2fd251fd8206c043ce91a99a45439a116.zip
video, udlfb: Fix two build warnings about 'ignoring return value'
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> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/video/udlfb.c')
-rw-r--r--drivers/video/udlfb.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 695066b5b2e6..14b152a99d13 100644
--- a/drivers/video/udlfb.c
+++ b/drivers/video/udlfb.c
@@ -1587,10 +1587,19 @@ 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 err_del_attrs;
+ }
+ }
- 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 err_del_attrs;
+ }
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
@@ -1599,6 +1608,10 @@ static int dlfb_usb_probe(struct usb_interface *interface,
info->fix.smem_len * 2 : info->fix.smem_len) >> 10);
return 0;
+err_del_attrs:
+ for (i -= 1; i >= 0; i--)
+ device_remove_file(info->dev, &fb_device_attrs[i]);
+
error:
if (dev) {
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