[B.A.T.M.A.N.] [PATCH 4/4] Staging: batman-adv: Don't allocate icmp packet with GFP_KERNEL

Sven Eckelmann sven.eckelmann at gmx.de
Sat May 22 17:48:47 CEST 2010


A new buffer for a packet is created when a icmp packet is received.
This happens in a context with disabled irq. Thus we are not allowed to
sleep or call function which might sleep. kmalloc must be called with
GFP_ATOMIC instead of GFP_KERNEL to ensure that it does not sleep.

Signed-off-by: Sven Eckelmann <sven.eckelmann at gmx.de>
---
 drivers/staging/batman-adv/device.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/batman-adv/device.c b/drivers/staging/batman-adv/device.c
index ad82ec4..7eb6559 100644
--- a/drivers/staging/batman-adv/device.c
+++ b/drivers/staging/batman-adv/device.c
@@ -309,7 +309,7 @@ void bat_device_add_packet(struct device_client *device_client,
 	struct device_packet *device_packet;
 	unsigned long flags;
 
-	device_packet = kmalloc(sizeof(struct device_packet), GFP_KERNEL);
+	device_packet = kmalloc(sizeof(struct device_packet), GFP_ATOMIC);
 
 	if (!device_packet)
 		return;
-- 
1.7.1



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