diff mbox series

[4.19,093/346] media: msi2500: assign SPI bus number dynamically

Message ID 20201228124924.296393809@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH Dec. 28, 2020, 12:46 p.m. UTC 
From: Antti Palosaari <crope@iki.fi>

commit 9c60cc797cf72e95bb39f32316e9f0e5f85435f9 upstream.

SPI bus number must be assigned dynamically for each device, otherwise it
will crash when multiple devices are plugged to system.

Reported-and-tested-by: syzbot+c60ddb60b685777d9d59@syzkaller.appspotmail.com

Cc: stable@vger.kernel.org
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/usb/msi2500/msi2500.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/media/usb/msi2500/msi2500.c
+++ b/drivers/media/usb/msi2500/msi2500.c
@@ -1250,7 +1250,7 @@  static int msi2500_probe(struct usb_inte
 	}
 
 	dev->master = master;
-	master->bus_num = 0;
+	master->bus_num = -1;
 	master->num_chipselect = 1;
 	master->transfer_one_message = msi2500_transfer_one_message;
 	spi_master_set_devdata(master, dev);