@@ -253,11 +253,6 @@ static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);
static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);
-static inline bool ufshcd_valid_tag(struct ufs_hba *hba, int tag)
-{
- return tag >= 0 && tag < hba->nutrs;
-}
-
static inline void ufshcd_enable_irq(struct ufs_hba *hba)
{
if (!hba->is_irq_enabled) {
@@ -2701,21 +2696,11 @@ static void ufshcd_init_lrb(struct ufs_hba *hba, struct ufshcd_lrb *lrb, int i)
*/
static int ufshcd_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
{
+ struct ufs_hba *hba = shost_priv(host);
+ int tag = cmd->request->tag;
struct ufshcd_lrb *lrbp;
- struct ufs_hba *hba;
- int tag;
int err = 0;
- hba = shost_priv(host);
-
- tag = cmd->request->tag;
- if (!ufshcd_valid_tag(hba, tag)) {
- dev_err(hba->dev,
- "%s: invalid command tag %d: cmd=0x%p, cmd->request=0x%p",
- __func__, tag, cmd, cmd->request);
- BUG();
- }
-
if (!down_read_trylock(&hba->clk_scaling_lock))
return SCSI_MLQUEUE_HOST_BUSY;
@@ -2968,7 +2953,6 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba,
goto out_unlock;
}
tag = req->tag;
- WARN_ON_ONCE(!ufshcd_valid_tag(hba, tag));
if (unlikely(test_bit(tag, &hba->outstanding_reqs))) {
err = -EBUSY;
@@ -6675,7 +6659,6 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba,
goto out_unlock;
}
tag = req->tag;
- WARN_ON_ONCE(!ufshcd_valid_tag(hba, tag));
if (unlikely(test_bit(tag, &hba->outstanding_reqs))) {
err = -EBUSY;
@@ -6978,25 +6961,14 @@ static int ufshcd_try_to_abort_task(struct ufs_hba *hba, int tag)
*/
static int ufshcd_abort(struct scsi_cmnd *cmd)
{
- struct Scsi_Host *host;
- struct ufs_hba *hba;
+ struct Scsi_Host *host = cmd->device->host;
+ struct ufs_hba *hba = shost_priv(host);
+ unsigned int tag = cmd->request->tag;
+ struct ufshcd_lrb *lrbp = &hba->lrb[tag];
unsigned long flags;
- unsigned int tag;
int err = 0;
- struct ufshcd_lrb *lrbp;
u32 reg;
- host = cmd->device->host;
- hba = shost_priv(host);
- tag = cmd->request->tag;
- lrbp = &hba->lrb[tag];
- if (!ufshcd_valid_tag(hba, tag)) {
- dev_err(hba->dev,
- "%s: invalid command tag %d: cmd=0x%p, cmd->request=0x%p",
- __func__, tag, cmd, cmd->request);
- BUG();
- }
-
ufshcd_hold(hba, false);
reg = ufshcd_readl(hba, REG_UTP_TRANSFER_REQ_DOOR_BELL);
/* If command is already aborted/completed, return SUCCESS */
scsi_add_host() allocates shost->can_queue tags. ufshcd_init() sets shost->can_queue to hba->nutrs. In other words, we know that tag values will be in the range [0, hba->nutrs). Hence remove the checks that verify that blk_get_request() returns a tag in this range. This check was introduced by commit 14497328b6a6 ("scsi: ufs: verify command tag validity"). Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Avri Altman <avri.altman@wdc.com> Cc: Gilad Broner <gbroner@codeaurora.org> Cc: Yaniv Gardi <ygardi@codeaurora.org> Cc: Subhash Jadavani <subhashj@codeaurora.org> Cc: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Bart Van Assche <bvanassche@acm.org> --- drivers/scsi/ufs/ufshcd.c | 40 ++++++--------------------------------- 1 file changed, 6 insertions(+), 34 deletions(-)