diff options
| author | anvithdosapati <anvithdosapati@google.com> | 2025-06-16 08:57:34 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-06 11:01:44 +0200 |
| commit | 6a87e794046f5db667acc99c671781102b28931b (patch) | |
| tree | 60e645488dcee849ac8ebd707c3ceb9e21b5305a | |
| parent | 19a47c966deb36624843b7301f0373a3dc541a05 (diff) | |
scsi: ufs: core: Fix clk scaling to be conditional in reset and restore
commit 2e083cd802294693a5414e4557a183dd7e442e71 upstream.
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: a3cd5ec55f6c ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/ufs/core/ufshcd.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index c5cef57e64ce..a6299cb19237 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -7743,7 +7743,8 @@ 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 */ - ufshcd_scale_clks(hba, ULONG_MAX, true); + if (ufshcd_is_clkscaling_supported(hba)) + ufshcd_scale_clks(hba, ULONG_MAX, true); err = ufshcd_hba_enable(hba); |