From 820351f05be93623c6e71b5d618f90f0deebc134 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 2 Jan 2016 14:58:07 -0500 Subject: [PATCH] rsxx: don't open-code memdup_user() Signed-off-by: Al Viro --- drivers/block/rsxx/core.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index d8b2488aaade..34997df132e2 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -203,14 +203,11 @@ static ssize_t rsxx_cram_write(struct file *fp, const char __user *ubuf, char *buf; ssize_t st; - buf = kzalloc(cnt, GFP_KERNEL); - if (!buf) - return -ENOMEM; + buf = memdup_user(ubuf, cnt); + if (IS_ERR(buf)) + return PTR_ERR(buf); - st = copy_from_user(buf, ubuf, cnt); - if (!st) - st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt, - buf, 1); + st = rsxx_creg_write(card, CREG_ADD_CRAM + (u32)*ppos, cnt, buf, 1); kfree(buf); if (st) return st;