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USB: opticon: fix non-atomic allocation in write path

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commit e681286de2 upstream.

Write may be called from interrupt context so make sure to use
GFP_ATOMIC for all allocations in write.

Fixes: 0d930e51cf ("USB: opticon: Add Opticon OPN2001 write support")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2014-10-29 09:07:31 +01:00 committed by Greg Kroah-Hartman
parent b0476c8776
commit 547d682d56
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/serial/opticon.c
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@ -219,7 +219,7 @@ static int opticon_write(struct tty_struct *tty, struct usb_serial_port *port,
/* The conncected devices do not have a bulk write endpoint,
* to transmit data to de barcode device the control endpoint is used */
dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_NOIO);
dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_ATOMIC);
if (!dr) {
dev_err(&port->dev, "out of memory\n");
count = -ENOMEM;