Commit 1898b629 authored by Alexey Khoroshilov's avatar Alexey Khoroshilov Committed by Sasha Levin

USB: serial: mos7840: fix non-atomic allocation in write path

[ Upstream commit 3b7c7e52 ]

There is an allocation with GFP_KERNEL flag in mos7840_write(),
while it may be called from interrupt context.

Follow-up for commit 19125283 ("USB: kobil_sct: fix non-atomic
allocation in write path")

Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: default avatarAlexey Khoroshilov <khoroshilov@ispras.ru>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 9f4cc3be
......@@ -1340,8 +1340,8 @@ static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port,
}
if (urb->transfer_buffer == NULL) {
urb->transfer_buffer =
kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE,
GFP_ATOMIC);
if (!urb->transfer_buffer)
goto exit;
}
......
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