| From f5280abfe580552ebd8531478a89a93ed45eeb41 Mon Sep 17 00:00:00 2001 |
| From: Ezequiel Garcia <ezequiel@collabora.com> |
| Date: Thu, 28 Feb 2019 10:28:34 -0500 |
| Subject: media: gspca: Kill URBs on USB device disconnect |
| |
| [ Upstream commit 9b9ea7c2b57a0c9c3341fc6db039d1f7971a432e ] |
| |
| In order to prevent ISOC URBs from being infinitely resubmitted, |
| the driver's USB disconnect handler must kill all the in-flight URBs. |
| |
| While here, change the URB packet status message to a debug level, |
| to avoid spamming the console too much. |
| |
| This commit fixes a lockup caused by an interrupt storm coming |
| from the URB completion handler. |
| |
| Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> |
| Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
| Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> |
| Signed-off-by: Sasha Levin <sashal@kernel.org> |
| --- |
| drivers/media/usb/gspca/gspca.c | 4 +++- |
| 1 file changed, 3 insertions(+), 1 deletion(-) |
| |
| diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c |
| index ac70b36d67b7b..128935f2a217e 100644 |
| --- a/drivers/media/usb/gspca/gspca.c |
| +++ b/drivers/media/usb/gspca/gspca.c |
| @@ -294,7 +294,7 @@ static void fill_frame(struct gspca_dev *gspca_dev, |
| /* check the packet status and length */ |
| st = urb->iso_frame_desc[i].status; |
| if (st) { |
| - pr_err("ISOC data error: [%d] len=%d, status=%d\n", |
| + gspca_dbg(gspca_dev, D_PACK, "ISOC data error: [%d] len=%d, status=%d\n", |
| i, len, st); |
| gspca_dev->last_packet_type = DISCARD_PACKET; |
| continue; |
| @@ -1638,6 +1638,8 @@ void gspca_disconnect(struct usb_interface *intf) |
| |
| mutex_lock(&gspca_dev->usb_lock); |
| gspca_dev->present = false; |
| + destroy_urbs(gspca_dev); |
| + gspca_input_destroy_urb(gspca_dev); |
| |
| vb2_queue_error(&gspca_dev->queue); |
| |
| -- |
| 2.20.1 |
| |
