From: kernel test robot <lkp(a)intel.com&gt; drivers/gpu/drm/nouveau/nouveau_gem.c:589:9-16: WARNING: ERR_CAST can be used with mem Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)) Generated by: scripts/coccinelle/api/err_cast.cocci CC: Markus Elfring <elfring(a)users.sourceforge.net&gt; Signed-off-by: kernel test robot <lkp(a)intel.com&gt; --- url: https://github.com/0day-ci/linux/commits/Markus-Elfring/drm-nouveau-gem-U... base: git://anongit.freedesktop.org/drm-intel for-linux-next nouveau_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -586,7 +586,7 @@ u_memcpya(uint64_t user, unsigned nmemb, size *= nmemb; mem = vmemdup_user(userptr, size); if (IS_ERR(mem)) - return ERR_PTR(PTR_ERR(mem)); + return ERR_CAST(mem); return mem; }