From: Michael Tretter m.tretter@pengutronix.de
[ Upstream commit c704b17071c4dc571dca3af4e4151dac51de081a ]
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.trett... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/drm_debugfs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_debugfs.c b/drivers/gpu/drm/drm_debugfs.c index eab0f2687cd6e..00debd02c3220 100644 --- a/drivers/gpu/drm/drm_debugfs.c +++ b/drivers/gpu/drm/drm_debugfs.c @@ -337,13 +337,13 @@ 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;