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drm: Distinguish no name from ENOMEM in set_unique() 

If passing name == NULL to drm_drv_set_unique() we now get -ENOMEM
as kstrdup() returns NULL. Instead check for this explicitly and
return -EINVAL if no name is provided.

Signed-off-by: Tom Gundersen <teg@jklm.no>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20160921145919.13754-1-teg@jklm.no
steinar/wifi_calib_4_9_kernel
Tom Gundersen 2016-09-21 16:59:18 +02:00 committed by Sean Paul
parent f566911ae1
commit c6bf811a0b
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/drm_drv.c
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@ -338,6 +338,9 @@ void drm_minor_release(struct drm_minor *minor)
static int drm_dev_set_unique(struct drm_device *dev, const char *name)
{
if (!name)
return -EINVAL;
kfree(dev->unique);
dev->unique = kstrdup(name, GFP_KERNEL);