Re: [PATCH] scsi: mac53c94: fix warning comparing pointer to 0

[Martin K. Petersen]

On Wed, 10 Mar 2021 12:16:11 +0800, Jiapeng Chong wrote:

> 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.

Applied to 5.13/scsi-queue, thanks!

[1/1] scsi: mac53c94: fix warning comparing pointer to 0
  https://git.kernel.org/mkp/scsi/c/be20b96b6319

-- 
Martin K. Petersen  Oracle Linux Engineering

[PATCH] scsi: mac53c94: fix warning comparing pointer to 0

[Jiapeng Chong]

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 
Signed-off-by: Jiapeng Chong 
---
 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