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drm/debugfs: fix plain echo to connector "force" attribute
author
Michael Tretter
<m.tretter@pengutronix.de>
Thu, 17 Aug 2017 10:43:07 +0000
(12:43 +0200)
committer
Emil Velikov
<emil.l.velikov@gmail.com>
Sun, 17 May 2020 16:27:57 +0000
(17:27 +0100)
Using plain echo to set the "force" connector attribute fails with
-EINVAL, because echo appends a newline to the output.
Replace strcmp with sysfs_streq to also accept strings that end with a
newline.
v2: use sysfs_streq instead of stripping trailing whitespace
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20170817104307.17124-1-m.tretter@pengutronix.de
drivers/gpu/drm/drm_debugfs.c
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diff --git
a/drivers/gpu/drm/drm_debugfs.c
b/drivers/gpu/drm/drm_debugfs.c
index
2bea221
..
bfe4602
100644
(file)
--- a/
drivers/gpu/drm/drm_debugfs.c
+++ b/
drivers/gpu/drm/drm_debugfs.c
@@
-311,13
+311,13
@@
static ssize_t connector_write(struct file *file, const char __user *ubuf,
buf[len] = '\0';
- if (
!strcmp
(buf, "on"))
+ if (
sysfs_streq
(buf, "on"))
connector->force = DRM_FORCE_ON;
- else if (
!strcmp
(buf, "digital"))
+ else if (
sysfs_streq
(buf, "digital"))
connector->force = DRM_FORCE_ON_DIGITAL;
- else if (
!strcmp
(buf, "off"))
+ else if (
sysfs_streq
(buf, "off"))
connector->force = DRM_FORCE_OFF;
- else if (
!strcmp
(buf, "unspecified"))
+ else if (
sysfs_streq
(buf, "unspecified"))
connector->force = DRM_FORCE_UNSPECIFIED;
else
return -EINVAL;