From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
To: jejb@linux.ibm.com
Cc: martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org,
Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Subject: [PATCH] scsi: mac53c94: fix warning comparing pointer to 0
Date: Wed, 10 Mar 2021 12:16:11 +0800 [thread overview]
Message-ID: <1615349771-81106-1-git-send-email-jiapeng.chong@linux.alibaba.com> (raw)
Fix the following coccicheck warning:
./drivers/scsi/mac53c94.c:470:29-30: WARNING comparing pointer to 0.
./drivers/scsi/mac53c94.c:349:12-13: WARNING comparing pointer to 0.
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
---
drivers/scsi/mac53c94.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/mac53c94.c b/drivers/scsi/mac53c94.c
index 9e98977..ec9840d 100644
--- a/drivers/scsi/mac53c94.c
+++ b/drivers/scsi/mac53c94.c
@@ -346,7 +346,7 @@ static void cmd_done(struct fsc_state *state, int result)
struct scsi_cmnd *cmd;
cmd = state->current_req;
- if (cmd != 0) {
+ if (cmd) {
cmd->result = result;
(*cmd->scsi_done)(cmd);
state->current_req = NULL;
@@ -467,12 +467,13 @@ static int mac53c94_probe(struct macio_dev *mdev, const struct of_device_id *mat
dma_cmd_space = kmalloc_array(host->sg_tablesize + 2,
sizeof(struct dbdma_cmd),
GFP_KERNEL);
- if (dma_cmd_space == 0) {
- printk(KERN_ERR "mac53c94: couldn't allocate dma "
- "command space for %pOF\n", node);
+ if (!dma_cmd_space) {
+ printk(KERN_ERR "mac53c94: couldn't allocate dma "
+ "command space for %pOF\n", node);
rc = -ENOMEM;
- goto out_free;
- }
+ goto out_free;
+ }
+
state->dma_cmds = (struct dbdma_cmd *)DBDMA_ALIGN(dma_cmd_space);
memset(state->dma_cmds, 0, (host->sg_tablesize + 1)
* sizeof(struct dbdma_cmd));
--
1.8.3.1
next reply other threads:[~2021-03-10 4:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 4:16 Jiapeng Chong [this message]
2021-03-30 3:54 ` [PATCH] scsi: mac53c94: fix warning comparing pointer to 0 Martin K. Petersen
2022-03-14 7:58 Haowen Bai
2022-05-03 0:51 ` Martin K. Petersen
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