From 76aaf8a96771c16365b8510f1fb97738dc88026e Mon Sep 17 00:00:00 2001
From: Dinghao Liu <dinghao.liu@zju.edu.cn>
Date: Sat, 2 Jan 2021 09:26:37 +0100
Subject: [PATCH] media: tm6000: Fix memleak in tm6000_start_stream
Git-commit: 76aaf8a96771c16365b8510f1fb97738dc88026e
Patch-mainline: v5.12-rc1
References: git-fixes

When usb_clear_halt() fails, dvb->bulk_urb->transfer_buffer
and dvb->bulk_urb should be freed just like when
usb_submit_urb() fails.

Fixes: 3169c9b26fffa ("V4L/DVB (12788): tm6000: Add initial DVB-T support")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/media/usb/tm6000/tm6000-dvb.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/media/usb/tm6000/tm6000-dvb.c
+++ b/drivers/media/usb/tm6000/tm6000-dvb.c
@@ -150,6 +150,10 @@ static int tm6000_start_stream(struct tm
 	if (ret < 0) {
 		printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
 							ret, __func__);
+
+		kfree(dvb->bulk_urb->transfer_buffer);
+		usb_free_urb(dvb->bulk_urb);
+		dvb->bulk_urb = NULL;
 		return ret;
 	} else
 		printk(KERN_ERR "tm6000: pipe resetted\n");