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scsi: ufs: core: Fix clk scaling to be conditional in reset and restore

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[ Upstream commit 2e083cd802294693a5414e4557a183dd7e442e71 ]

In ufshcd_host_reset_and_restore(), scale up clocks only when clock
scaling is supported. Without this change CPU latency is voted for 0
(ufshcd_pm_qos_update) during resume unconditionally.

Signed-off-by: anvithdosapati <anvithdosapati@google.com>
Link: https://lore.kernel.org/r/20250616085734.2133581-1-anvithdosapati@google.com
Fixes: a3cd5ec55f ("scsi: ufs: add load based scaling of UFS gear")
Cc: stable@vger.kernel.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
anvithdosapati
2025-06-16 08:57:34 +00:00
committed by Greg Kroah-Hartman
parent 847af89aa1
commit 51ba658604
1 changed files with 2 additions and 1 deletions
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drivers/ufs/core/ufshcd.c
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@@ -7780,6 +7780,7 @@ static int ufshcd_host_reset_and_restore(struct ufs_hba *hba)
hba->silence_err_logs = false;
/* scale up clocks to max frequency before full reinitialization */
if (ufshcd_is_clkscaling_supported(hba))
ufshcd_scale_clks(hba, ULONG_MAX, true);
err = ufshcd_hba_enable(hba);