scsi: mac53c94: Fix warning comparing pointer to 0

Lotte-Bai · martinkpetersen · commit 93de8df20537 · 2022-04-25T23:23:05.000-04:00
Fix the following coccicheck warning: drivers/scsi/mac53c94.c:237:12-13: WARNING comparing pointer to 0 Link: https://lore.kernel.org/r/1647244711-31575-1-git-send-email-baihaowen@meizu.com Signed-off-by: Haowen Bai <baihaowen@meizu.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
@@ -234,7 +234,7 @@ static void mac53c94_interrupt(int irq, void *dev_id)
 		++mac53c94_errors;
 		writeb(CMD_NOP + CMD_DMA_MODE, &regs->command);
 	}
-	if (cmd == 0) {
+	if (!cmd) {
 		printk(KERN_DEBUG "53c94: interrupt with no command active?\n");
 		return;
 	}

Original file line number	Diff line number	Diff line change
`@@ -234,7 +234,7 @@ static void mac53c94_interrupt(int irq, void *dev_id)`
`234`	`234`	`++mac53c94_errors;`
`235`	`235`	`writeb(CMD_NOP + CMD_DMA_MODE, &regs->command);`
`236`	`236`	`}`
`237`		`- if (cmd == 0) {`
	`237`	`+ if (!cmd) {`
`238`	`238`	`printk(KERN_DEBUG "53c94: interrupt with no command active?\n");`
`239`	`239`	`return;`
`240`	`240`	`}`