scsi: ufs: optimize clock gate work
PATCH 11/11 scsi: ufs: optimize clock gate work
From: Venkat Gopalakrishnan <[email protected]>
In a case where gate work is called as part of cancel work from ungate path the clk state would be marked as REQ_CLKS_ON. There is no point gating the clocks and then end up turning them ON immediately in ungate work, save time by skipping the gate work and change the clk state to CLKS_ON as they are not turned off yet.
Signed-off-by Venkat Gopalakrishnan <[email protected]>
Signed-off-by Subhash Jadavani <[email protected]>
--- drivers/scsi/ufs/ufshcd.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
drivers/scsi/ufs/ufshcd.c +8 -1
@@ -739,7 +739,14 @@ static void ufshcd_gate_work(struct work_struct *work)unsigned long flags;spin_lock_irqsave (hba->host->host_lock, flags); -if (hba->clk_gating.is_suspended) { +/* +* In case you are here to cancel this work the gating state +* would be marked as REQ_CLKS_ON. In this case save time by +* skipping the gating work and exit after changing the clock +* state to CLKS_ON. +*/ +if (hba->clk_gating.is_suspended || + (hba->clk_gating.state ==REQ_CLKS_ON )) { hba->clk_gating.state =CLKS_ON ; goto rel_lock; }
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