From: Johan Hovold Date: Wed, 29 Oct 2014 08:07:30 +0000 (+0100) Subject: USB: kobil_sct: fix non-atomic allocation in write path X-Git-Tag: upstream/snapshot3+hdmi~1090 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=448356262f56f389b7fa4e388746db4c8ee9e0c1;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git USB: kobil_sct: fix non-atomic allocation in write path commit 191252837626fca0de694c18bb2aa64c118eda89 upstream. Write may be called from interrupt context so make sure to use GFP_ATOMIC for all allocations in write. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 618c1c1..5cdb32b 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -335,7 +335,8 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, port->interrupt_out_urb->transfer_buffer_length = length; priv->cur_pos = priv->cur_pos + length; - result = usb_submit_urb(port->interrupt_out_urb, GFP_NOIO); + result = usb_submit_urb(port->interrupt_out_urb, + GFP_ATOMIC); dev_dbg(&port->dev, "%s - Send write URB returns: %i\n", __func__, result); todo = priv->filled - priv->cur_pos; @@ -350,7 +351,7 @@ static int kobil_write(struct tty_struct *tty, struct usb_serial_port *port, if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) { result = usb_submit_urb(port->interrupt_in_urb, - GFP_NOIO); + GFP_ATOMIC); dev_dbg(&port->dev, "%s - Send read URB returns: %i\n", __func__, result); } }