From 682a60446b150f3058b77806768977f4dff0fffb Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sat, 16 Feb 2019 01:35:43 +0000 Subject: [PATCH] misc: fastrpc: Fix return value check in fastrpc_map_create() In case of error, the function dma_buf_get() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun Signed-off-by: Greg Kroah-Hartman --- drivers/misc/fastrpc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index 89aec17738ef..39f832d27288 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -496,8 +496,8 @@ static int fastrpc_map_create(struct fastrpc_user *fl, int fd, map->fl = fl; map->fd = fd; map->buf = dma_buf_get(fd); - if (!map->buf) { - err = -EINVAL; + if (IS_ERR(map->buf)) { + err = PTR_ERR(map->buf); goto get_err; }