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authorAl Viro2016-01-02 14:58:07 -0500
committerAl Viro2016-01-06 08:25:24 -0500
commit820351f05be93623c6e71b5d618f90f0deebc134 (patch)
treeec84e7ca27e680945425f161681e004516fb4a80 /drivers/block/rsxx
parent8ed6010d50ee010961ccecb4507470b244928603 (diff)
rsxx: don't open-code memdup_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/block/rsxx')
-rw-r--r--drivers/block/rsxx/core.c11
1 files 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;