From: Johan Hovold <jo...@kernel.org>
3.4.106-rc1 review patch. If anyone has any objections, please let me know.
------------------
commit e681286de221af78fc85db9222b6a203148c005a upstream.
Write may be called from interrupt context so make sure to use
GFP_ATOMIC for all allocations in write.
Fixes: 0d930e51cfe6 ("USB: opticon: Add Opticon OPN2001 write support")
Signed-off-by: Johan Hovold <jo...@kernel.org>
Signed-off-by: Zefan Li <lize...@huawei.com>
---
drivers/usb/serial/opticon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 1f85006..58b7cec 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -293,7 +293,7 @@ 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;
--
1.9.1
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