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authorJia-Ju Bai <baijiaju1990@gmail.com>2018-04-11 10:14:10 +0800
committerStefan Schmidt <stefan@osg.samsung.com>2018-04-23 20:56:23 +0200
commitf9e628a6645ed4f42a15dfa3c5af45a916a228e4 (patch)
tree02e52473bc2968a3bc613a4ac1f9751a6bb0bba3 /drivers/net/ieee802154
parent94912e8df4e5005cb5fa3f3603741eb5e8bf3334 (diff)
net: ieee802154: atusb: Replace GFP_ATOMIC with GFP_KERNEL in atusb_probe
atusb_probe() is never called in atomic context. This function is only set as ".probe" in struct usb_driver. Despite never getting called from atomic context, atusb_probe() calls usb_alloc_urb() with GFP_ATOMIC, which does not sleep for allocation. GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL, which can sleep and improve the possibility of sucessful allocation. This is found by a static analysis tool named DCNS written by myself. And I also manually check it. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Diffstat (limited to 'drivers/net/ieee802154')
-rw-r--r--drivers/net/ieee802154/atusb.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
index 9fb9b565a002..4f684cbcdc57 100644
--- a/drivers/net/ieee802154/atusb.c
+++ b/drivers/net/ieee802154/atusb.c
@@ -1045,7 +1045,7 @@ static int atusb_probe(struct usb_interface *interface,
atusb->tx_dr.bRequest = ATUSB_TX;
atusb->tx_dr.wValue = cpu_to_le16(0);
- atusb->tx_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ atusb->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!atusb->tx_urb)
goto fail;