From 7ee2eaa3641827a9ecdffa190cde31846024d2e3 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 11 Sep 2016 12:09:01 +0800 Subject: [PATCH] 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 Reviewed-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-alps.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/hid/hid-alps.c b/drivers/hid/hid-alps.c index 048befde295a..2808da9ed9c8 100644 --- a/drivers/hid/hid-alps.c +++ b/drivers/hid/hid-alps.c @@ -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; } -- 2.39.5