linux-kernel - [PATCH] block: ataflop: Fix warning comparing pointer to 0

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Date:   Fri, 29 Oct 2021 17:50:29 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     axboe@...nel.dk
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH] block: ataflop: Fix warning comparing pointer to 0

Fix the following coccicheck warning:

./drivers/block/ataflop.c:1464:20-21: WARNING comparing pointer to 0.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
 drivers/block/ataflop.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 2622803..d14bdc3 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1460,8 +1460,7 @@ static int floppy_revalidate(struct gendisk *disk)
 	unsigned int drive = p - unit;
 
 	if (test_bit(drive, &changed_floppies) ||
-	    test_bit(drive, &fake_change) ||
-	    p->disktype == 0) {
+	    test_bit(drive, &fake_change) || !p->disktype) {
 		if (UD.flags & FTD_MSG)
 			printk(KERN_ERR "floppy: clear format %p!\n", UDT);
 		BufferDrive = -1;
-- 
1.8.3.1