On Wed, May 19, 2021 at 02:47:17PM +0200, Johan Hovold wrote:
quoted hunk ↗ jump to hunk
Commit 31db0dbd7244 ("net: hso: check for allocation failure in
hso_create_bulk_serial_device()") recently started returning an error
when the driver fails to allocate resources for the interrupt endpoint
and tiocmget functionality.
For consistency let's bail out from probe also if the URB allocation
fails.
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/net/usb/hso.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 260f850d69eb..b48b2a25210c 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2635,14 +2635,14 @@ static struct hso_device *hso_create_bulk_serial_device(
}
tiocmget->urb = usb_alloc_urb(0, GFP_KERNEL);
- if (tiocmget->urb) {
- mutex_init(&tiocmget->mutex);
- init_waitqueue_head(&tiocmget->waitq);
- } else
- hso_free_tiomget(serial);
Thanks! The original code works, but it's so suspicious looking because
you would think hso_free_tiomget() lead to a use after free later.
Reviewed-by: Dan Carpenter <redacted>
regards,
dan carpenter