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FROMGIT: scsi: ufs: Modify Tactive time setting conditions

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The Tactive time determines the waiting time before burst at hibern8 exit
and is determined by hardware at linkup time. However, in the case of
Samsung devices, increase host's Tactive time +100us for stability. If the
HCI's Tactive time is equal or greater than the device, +100us should be
set.

Link: https://lore.kernel.org/r/20220106213924.186263-1-hy50.seo@samsung.com
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Acked-by: Avri Altman <Avri.Altman@wdc.com>
Signed-off-by: SEO HOYOUNG <hy50.seo@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from commit 9008661e19606bdf6dddd33073b70872da400590 git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next)
Bug: 204438323
Change-Id: I6ffe1c279cab9b780558de763e94cf01cfd4be3e
Signed-off-by: Bart Van Assche <bvanassche@google.com>
Signed-off-by: Byunghoon Kim <bhoon95.kim@samsung.com>
This commit is contained in:
SEO HOYOUNG 2022-01-07 06:39:24 +09:00 committed by Will Deacon
parent fc1490c621
commit 8cf3c25495
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/ufs/ufshcd.c
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@ -7651,7 +7651,7 @@ static int ufshcd_quirk_tune_host_pa_tactivate(struct ufs_hba *hba)
peer_pa_tactivate_us = peer_pa_tactivate *
gran_to_us_table[peer_granularity - 1];
if (pa_tactivate_us > peer_pa_tactivate_us) {
if (pa_tactivate_us >= peer_pa_tactivate_us) {
u32 new_peer_pa_tactivate;
new_peer_pa_tactivate = pa_tactivate_us /