Fix regression introduced by commit 818f60365a29 ("USB: serial: add
memory flags to usb_serial_generic_write_start"), which incorrectly used
GFP_KERNEL in write(), which must not not sleep.
Reported-by: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Tested-by: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Cc: Dave Jones <davej@xxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <jhovold@xxxxxxxxx>
---
drivers/usb/serial/generic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index e36b25a2fa02..b63ce023f96f 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -200,7 +200,7 @@ int usb_serial_generic_write(struct tty_struct *tty,
return 0;
count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock);
- result = usb_serial_generic_write_start(port, GFP_KERNEL);
+ result = usb_serial_generic_write_start(port, GFP_ATOMIC);
if (result)
return result;
--
1.8.4.2
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