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NFC: pn533: Fix wrong GFP flag usage 

[ Upstream commit ecc443c03f ]

pn533_recv_response() is an urb completion handler, so it must use
GFP_ATOMIC. pn533_usb_send_frame() OTOH runs from a regular sleeping
context, so the pn533_submit_urb_for_response() there (and only there)
can use the regular GFP_KERNEL flags.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1514134
Fixes: 9815c7cf22 ("NFC: pn533: Separate physical layer from ...")
Cc: Michael Thalmeier <michael.thalmeier@hale.at>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Hans de Goede 2018-06-07 15:54:48 +02:00 committed by Greg Kroah-Hartman
parent 8a7ac5ee68
commit d341ce9a63
1 changed files with 2 additions and 2 deletions
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4
drivers/nfc/pn533/usb.c
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@ -74,7 +74,7 @@ static void pn533_recv_response(struct urb *urb)
struct sk_buff *skb = NULL;
if (!urb->status) {
skb = alloc_skb(urb->actual_length, GFP_KERNEL);
skb = alloc_skb(urb->actual_length, GFP_ATOMIC);
if (!skb) {
nfc_err(&phy->udev->dev, "failed to alloc memory\n");
} else {
@ -186,7 +186,7 @@ static int pn533_usb_send_frame(struct pn533 *dev,
if (dev->protocol_type == PN533_PROTO_REQ_RESP) {
/* request for response for sent packet directly */
rc = pn533_submit_urb_for_response(phy, GFP_ATOMIC);
rc = pn533_submit_urb_for_response(phy, GFP_KERNEL);
if (rc)
goto error;
} else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) {