linux-kernel - [PATCH v2] ide: fix warning comparing pointer to 0

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Message-Id: <1615457932-33841-1-git-send-email-jiapeng.chong@linux.alibaba.com>
Date:   Thu, 11 Mar 2021 18:18:52 +0800
From:   Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
To:     davem@...emloft.net
Cc:     mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org,
        linux-ide@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org,
        Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
Subject: [PATCH v2] ide: fix warning comparing pointer to 0

Fix the following coccicheck warning:

./drivers/ide/pmac.c:1680:38-39: WARNING comparing pointer to 0.

Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>
---
Changes in v2:
  - Modified if condition.

 drivers/ide/pmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c
index ea0b064..8e1388b 100644
--- a/drivers/ide/pmac.c
+++ b/drivers/ide/pmac.c
@@ -1677,7 +1677,7 @@ static int pmac_ide_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
 	/* We won't need pci_dev if we switch to generic consistent
 	 * DMA routines ...
 	 */
-	if (dev == NULL || pmif->dma_regs == 0)
+	if (!dev || !pmif->dma_regs)
 		return -ENODEV;
 	/*
 	 * Allocate space for the DBDMA commands.
-- 
1.8.3.1