[PATCH v2] video, udlfb: Fix two build warnings about 'ignoring return value'
From: Liu Yuan <hidden>
Date: 2011-04-18 10:44:55
Also in:
lkml
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
From: Liu Yuan <redacted> 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 <redacted> --- drivers/video/udlfb.c | 19 ++++++++++++++++--- 1 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/video/udlfb.c b/drivers/video/udlfb.c
index 68041d9..1baa802 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 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,
@@ -1598,6 +1607,10 @@ 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) {
--
1.7.1