[PATCH] block: move the dereference below the NULL test

From: Wei Yongjun <redacted>

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <redacted>
---
 drivers/block/swim3.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 89ddab1..25a522d 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c

@@ -1090,13 +1090,14 @@ static const struct block_device_operations floppy_fops = {
 static void swim3_mb_event(struct macio_dev* mdev, int mb_state)
 {
 	struct floppy_state *fs = macio_get_drvdata(mdev);
-	struct swim3 __iomem *sw = fs->swim3;
+	struct swim3 __iomem *sw;
 
 	if (!fs)
 		return;
 	if (mb_state != MB_FD)
 		return;
 
+	sw = fs->swim3;
 	/* Clear state */
 	out_8(&sw->intr_enable, 0);
 	in_8(&sw->intr);

Sorry, I see the patch fix this issue has already exists in the maillist,
please ignore it, thanks.

-----Original Message-----
From: Wei Yongjun [mailto:weiyj.lk@gmail.com] 
Sent: 2012年9月7日 15:04
To: grant.likely@secretlab.ca; rob.herring@calxeda.com
Cc: Yongjun Wei (RD-CN); linux-kernel@vger.kernel.org; devicetree-discuss@lists.ozlabs.org
Subject: [PATCH] block: move the dereference below the NULL test

From: Wei Yongjun <redacted>

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)



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