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HID: alps: Fix memory leak 

A kfree(readbuf) call was missed if hid_hw_raw_request() fails, fix it.
Also avoid mixing direct return with goto in the error paths.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Axel Lin 2016-09-11 12:09:01 +08:00 committed by Jiri Kosina
parent b490a8537d
commit 7ee2eaa364
1 changed files with 3 additions and 2 deletions
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5
drivers/hid/hid-alps.c
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@ -139,8 +139,8 @@ static int u1_read_write_register(struct hid_device *hdev, u32 address,
if (read_flag) {
readbuf = kzalloc(U1_FEATURE_REPORT_LEN, GFP_KERNEL);
if (!readbuf) {
kfree(input);
return -ENOMEM;
ret = -ENOMEM;
goto exit;
}
ret = hid_hw_raw_request(hdev, U1_FEATURE_REPORT_ID, readbuf,
@ -149,6 +149,7 @@ static int u1_read_write_register(struct hid_device *hdev, u32 address,
if (ret < 0) {
dev_err(&hdev->dev, "failed read register (%d)\n", ret);
kfree(readbuf);
goto exit;
}