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authorFabian Frederick <fabf@skynet.be>2014-11-14 21:49:58 +0300
committerChristoph Hellwig <hch@lst.de>2014-11-20 11:11:29 +0300
commit9f30b674759b9a2da25aefe25d885161d8a911cb (patch)
tree3442f23ecb56782fa9869b9bb11137cb738bae98 /drivers
parent1b33ef23946adee4b7d9d6b16b7285ce61063451 (diff)
downloadlinux-9f30b674759b9a2da25aefe25d885161d8a911cb.tar.xz
bfa: replace 2 kzalloc/copy_from_user by memdup_user
This patch also removes unnecessary printk(KERN_INFO Signed-off-by: Fabian Frederick <fabf@skynet.be> Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/bfa/bfad_debugfs.c30
1 files changed, 6 insertions, 24 deletions
diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c
index 8e83d0474fe7..74a307c0a240 100644
--- a/drivers/scsi/bfa/bfad_debugfs.c
+++ b/drivers/scsi/bfa/bfad_debugfs.c
@@ -260,18 +260,9 @@ bfad_debugfs_write_regrd(struct file *file, const char __user *buf,
unsigned long flags;
void *kern_buf;
- kern_buf = kzalloc(nbytes, GFP_KERNEL);
-
- if (!kern_buf) {
- printk(KERN_INFO "bfad[%d]: Failed to allocate buffer\n",
- bfad->inst_no);
- return -ENOMEM;
- }
-
- if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
- kfree(kern_buf);
- return -ENOMEM;
- }
+ kern_buf = memdup_user(buf, nbytes);
+ if (IS_ERR(kern_buf))
+ return PTR_ERR(kern_buf);
rc = sscanf(kern_buf, "%x:%x", &addr, &len);
if (rc < 2) {
@@ -336,18 +327,9 @@ bfad_debugfs_write_regwr(struct file *file, const char __user *buf,
unsigned long flags;
void *kern_buf;
- kern_buf = kzalloc(nbytes, GFP_KERNEL);
-
- if (!kern_buf) {
- printk(KERN_INFO "bfad[%d]: Failed to allocate buffer\n",
- bfad->inst_no);
- return -ENOMEM;
- }
-
- if (copy_from_user(kern_buf, (void __user *)buf, nbytes)) {
- kfree(kern_buf);
- return -ENOMEM;
- }
+ kern_buf = memdup_user(buf, nbytes);
+ if (IS_ERR(kern_buf))
+ return PTR_ERR(kern_buf);
rc = sscanf(kern_buf, "%x:%x", &addr, &val);
if (rc < 2) {