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scsi: cxlflash: Drop unused sense buffers 

This removes the unused sense buffer in read_cap16() and write_same16().

Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Kees Cook 2018-07-31 12:51:47 -07:00 committed by Jens Axboe
parent 54f8a7ae7c
commit 1fd89e4ddc
2 changed files with 4 additions and 11 deletions
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8
drivers/scsi/cxlflash/superpipe.c
View File

@ -339,7 +339,6 @@ static int read_cap16(struct scsi_device *sdev, struct llun_info *lli)
struct scsi_sense_hdr sshdr;
u8 *cmd_buf = NULL;
u8 *scsi_cmd = NULL;
u8 *sense_buf = NULL;
int rc = 0;
int result = 0;
int retry_cnt = 0;
@ -348,8 +347,7 @@ static int read_cap16(struct scsi_device *sdev, struct llun_info *lli)
retry:
cmd_buf = kzalloc(CMD_BUFSIZE, GFP_KERNEL);
scsi_cmd = kzalloc(MAX_COMMAND_SIZE, GFP_KERNEL);
sense_buf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
if (unlikely(!cmd_buf || !scsi_cmd || !sense_buf)) {
if (unlikely(!cmd_buf || !scsi_cmd)) {
rc = -ENOMEM;
goto out;
}
@ -364,7 +362,7 @@ retry:
/* Drop the ioctl read semahpore across lengthy call */
up_read(&cfg->ioctl_rwsem);
result = scsi_execute(sdev, scsi_cmd, DMA_FROM_DEVICE, cmd_buf,
CMD_BUFSIZE, sense_buf, &sshdr, to, CMD_RETRIES,
CMD_BUFSIZE, NULL, &sshdr, to, CMD_RETRIES,
0, 0, NULL);
down_read(&cfg->ioctl_rwsem);
rc = check_state(cfg);
@ -395,7 +393,6 @@ retry:
if (retry_cnt++ < 1) {
kfree(cmd_buf);
kfree(scsi_cmd);
kfree(sense_buf);
goto retry;
}
}
@ -426,7 +423,6 @@ retry:
out:
kfree(cmd_buf);
kfree(scsi_cmd);
kfree(sense_buf);
dev_dbg(dev, "%s: maxlba=%lld blklen=%d rc=%d\n",
__func__, gli->max_lba, gli->blk_len, rc);

7
drivers/scsi/cxlflash/vlun.c
View File

@ -426,7 +426,6 @@ static int write_same16(struct scsi_device *sdev,
{
u8 *cmd_buf = NULL;
u8 *scsi_cmd = NULL;
u8 *sense_buf = NULL;
int rc = 0;
int result = 0;
u64 offset = lba;
@ -440,8 +439,7 @@ static int write_same16(struct scsi_device *sdev,
cmd_buf = kzalloc(CMD_BUFSIZE, GFP_KERNEL);
scsi_cmd = kzalloc(MAX_COMMAND_SIZE, GFP_KERNEL);
sense_buf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
if (unlikely(!cmd_buf || !scsi_cmd || !sense_buf)) {
if (unlikely(!cmd_buf || !scsi_cmd)) {
rc = -ENOMEM;
goto out;
}
@ -457,7 +455,7 @@ static int write_same16(struct scsi_device *sdev,
/* Drop the ioctl read semahpore across lengthy call */
up_read(&cfg->ioctl_rwsem);
result = scsi_execute(sdev, scsi_cmd, DMA_TO_DEVICE, cmd_buf,
CMD_BUFSIZE, sense_buf, NULL, to,
CMD_BUFSIZE, NULL, NULL, to,
CMD_RETRIES, 0, 0, NULL);
down_read(&cfg->ioctl_rwsem);
rc = check_state(cfg);
@ -482,7 +480,6 @@ static int write_same16(struct scsi_device *sdev,
out:
kfree(cmd_buf);
kfree(scsi_cmd);
kfree(sense_buf);
dev_dbg(dev, "%s: returning rc=%d\n", __func__, rc);
return rc;
}