[PATCH v2 14/20] scsi: ufs: Introduce ufshcd_release_scsi_cmd()

Bart Van Assche
2021-11-19T19:58:44Z

The only functional change in this patch is that scsi_done() is now called
after ufshcd_release() and ufshcd_clk_scaling_update_busy().

The next patch in this series will introduce a call to
ufshcd_release_scsi_cmd() in the abort handler.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
drivers/scsi/ufs/ufshcd.c | 27 +++++++++++++++------------
1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 03f4772fc2e2..39dcf997a638 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -5248,6 +5248,18 @@ static irqreturn_t ufshcd_uic_cmd_compl(struct ufs_hba *hba, u32 intr_status)
return retval;
}

+/* Release the resources allocated for processing a SCSI command. */
+static void ufshcd_release_scsi_cmd(struct ufs_hba *hba,
+ struct ufshcd_lrb *lrbp)
+{
+ struct scsi_cmnd *cmd = lrbp->cmd;
+
+ scsi_dma_unmap(cmd);
+ lrbp->cmd = NULL; /* Mark the command as completed. */
+ ufshcd_release(hba);
+ ufshcd_clk_scaling_update_busy(hba);
+}
+
/**
* __ufshcd_transfer_req_compl - handle SCSI and query command completion
* @hba: per adapter instance
@@ -5258,9 +5270,7 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
{
struct ufshcd_lrb *lrbp;
struct scsi_cmnd *cmd;
- int result;
int index;
- bool update_scaling = false;

for_each_set_bit(index, &completed_reqs, hba->nutrs) {
lrbp = &hba->lrb[index];
@@ -5270,26 +5280,19 @@ static void __ufshcd_transfer_req_compl(struct ufs_hba *hba,
if (unlikely(ufshcd_should_inform_monitor(hba, lrbp)))
ufshcd_update_monitor(hba, lrbp);
ufshcd_add_command_trace(hba, index, UFS_CMD_COMP);
- result = ufshcd_transfer_rsp_status(hba, lrbp);
- scsi_dma_unmap(cmd);
- cmd->result = result;
- /* Mark completed command as NULL in LRB */
- lrbp->cmd = NULL;
+ cmd->result = ufshcd_transfer_rsp_status(hba, lrbp);
+ ufshcd_release_scsi_cmd(hba, lrbp);
/* Do not touch lrbp after scsi done */
scsi_done(cmd);
- ufshcd_release(hba);
- update_scaling = true;
} else if (lrbp->command_type == UTP_CMD_TYPE_DEV_MANAGE ||
lrbp->command_type == UTP_CMD_TYPE_UFS_STORAGE) {
if (hba->dev_cmd.complete) {
ufshcd_add_command_trace(hba, index,
UFS_DEV_COMP);
complete(hba->dev_cmd.complete);
- update_scaling = true;
+ ufshcd_clk_scaling_update_busy(hba);
}
}
- if (update_scaling)
- ufshcd_clk_scaling_update_busy(hba);
}
}