From: Xiaohui Zhang xiaohuizhang@ruc.edu.cn
[ Upstream commit 8a4d480702b71184fabcf379b80bf7539716752e ]
Similar to the handling of play_deferred in commit 19cfe912c37b ("Bluetooth: btusb: Fix memory leak in play_deferred"), we thought a patch might be needed here as well.
Currently usb_submit_urb is called directly to submit deferred tx urbs after unanchor them.
So the usb_giveback_urb_bh would failed to unref it in usb_unanchor_urb and cause memory leak.
Put those urbs in tx_anchor to avoid the leak, and also fix the error handling.
Signed-off-by: Xiaohui Zhang xiaohuizhang@ruc.edu.cn Acked-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Link: https://lore.kernel.org/r/20220607083230.6182-1-xiaohuizhang@ruc.edu.cn Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nfc/nfcmrvl/usb.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/nfcmrvl/usb.c b/drivers/nfc/nfcmrvl/usb.c index 585a0f20835b..3263e2a2bdfd 100644 --- a/drivers/nfc/nfcmrvl/usb.c +++ b/drivers/nfc/nfcmrvl/usb.c @@ -401,13 +401,25 @@ static void nfcmrvl_play_deferred(struct nfcmrvl_usb_drv_data *drv_data) int err;
while ((urb = usb_get_from_anchor(&drv_data->deferred))) { + usb_anchor_urb(urb, &drv_data->tx_anchor); + err = usb_submit_urb(urb, GFP_ATOMIC); - if (err) + if (err) { + kfree(urb->setup_packet); + usb_unanchor_urb(urb); + usb_free_urb(urb); break; + }
drv_data->tx_in_flight++; + usb_free_urb(urb); + } + + /* Cleanup the rest deferred urbs. */ + while ((urb = usb_get_from_anchor(&drv_data->deferred))) { + kfree(urb->setup_packet); + usb_free_urb(urb); } - usb_scuttle_anchored_urbs(&drv_data->deferred); }
static int nfcmrvl_resume(struct usb_interface *intf)