From: Julia Lawall <julia@diku.dk>
Date: Tue, 1 Jun 2010 07:26:06 +0000 (-0700)
Subject: drivers/isdn/hardware/mISDN: Use GFP_ATOMIC when a lock is held
X-Git-Tag: v2.6.35-rc2~4^2~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b42d9165e1e3d92e4e3318642463dbe592a12568;p=platform%2Fkernel%2Flinux-3.10.git

drivers/isdn/hardware/mISDN: Use GFP_ATOMIC when a lock is held

The function inittiger is only called from nj_init_card, where a lock is held.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@gfp exists@
identifier fn;
position p;
@@

fn(...) {
 ... when != spin_unlock_irqrestore
     when any
 GFP_KERNEL@p
 ... when any
}

@locked@
identifier gfp.fn;
@@

spin_lock_irqsave(...)
...  when != spin_unlock_irqrestore
fn(...)

@depends on locked@
position gfp.p;
@@

- GFP_KERNEL@p
+ GFP_ATOMIC
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
index 0a3553d..54ae71a 100644
--- a/drivers/isdn/hardware/mISDN/netjet.c
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -320,12 +320,12 @@ inittiger(struct tiger_hw *card)
 		return -ENOMEM;
 	}
 	for (i = 0; i < 2; i++) {
-		card->bc[i].hsbuf = kmalloc(NJ_DMA_TXSIZE, GFP_KERNEL);
+		card->bc[i].hsbuf = kmalloc(NJ_DMA_TXSIZE, GFP_ATOMIC);
 		if (!card->bc[i].hsbuf) {
 			pr_info("%s: no B%d send buffer\n", card->name, i + 1);
 			return -ENOMEM;
 		}
-		card->bc[i].hrbuf = kmalloc(NJ_DMA_RXSIZE, GFP_KERNEL);
+		card->bc[i].hrbuf = kmalloc(NJ_DMA_RXSIZE, GFP_ATOMIC);
 		if (!card->bc[i].hrbuf) {
 			pr_info("%s: no B%d recv buffer\n", card->name, i + 1);
 			return -ENOMEM;