scsi: ufs: Give clk scaling min gear a value

The initialization of clk_scaling.min_gear was removed by mistake. This
change adds it back, otherwise clock scaling down would fail.

Link: https://lore.kernel.org/r/[email protected]
Fixes: 4543d9d ("scsi: ufs: Refactor ufshcd_init/exit_clk_scaling/gating()")
Reported-by: Bjorn Andersson <[email protected]>
Tested-by: Bjorn Andersson <[email protected]>
Tested-by: Bean Huo <[email protected]>
Reviewed-by: Stanley Chu <[email protected]>
Reviewed-by: Bjorn Andersson <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Can Guo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

Author: Can Guo

drivers/scsi/ufs/ufshcd.c

@@ -1602,6 +1602,9 @@ static void ufshcd_init_clk_scaling(struct ufs_hba *hba)
 	if (!ufshcd_is_clkscaling_supported(hba))
 		return;
 
+	if (!hba->clk_scaling.min_gear)
+		hba->clk_scaling.min_gear = UFS_HS_G1;
+
 	INIT_WORK(&hba->clk_scaling.suspend_work,
 		  ufshcd_clk_scaling_suspend_work);
 	INIT_WORK(&hba->clk_scaling.resume_work,