From 1fd89e4ddcec0c8cae15ddd19980cb944b2baf5d Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 31 Jul 2018 12:51:47 -0700 Subject: [PATCH] scsi: cxlflash: Drop unused sense buffers This removes the unused sense buffer in read_cap16() and write_same16(). Reviewed-by: Christoph Hellwig Acked-by: Matthew R. Ochs Signed-off-by: Kees Cook Signed-off-by: Jens Axboe --- drivers/scsi/cxlflash/superpipe.c | 8 ++------ drivers/scsi/cxlflash/vlun.c | 7 ++----- 2 files changed, 4 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/cxlflash/superpipe.c b/drivers/scsi/cxlflash/superpipe.c index e489d89cbb45..379890c4500b 100644 --- a/drivers/scsi/cxlflash/superpipe.c +++ b/drivers/scsi/cxlflash/superpipe.c @@ -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); diff --git a/drivers/scsi/cxlflash/vlun.c b/drivers/scsi/cxlflash/vlun.c index 66e445a17d6c..2c904bf16b65 100644 --- a/drivers/scsi/cxlflash/vlun.c +++ b/drivers/scsi/cxlflash/vlun.c @@ -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; } -- 2.39.5