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UPSTREAM: 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>
Bug: 234653003
(cherry picked from commit 9008661e19)
Change-Id: I6c2f7b517efb60bf3e1fd4922fbec3d464909d44
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
SEO HOYOUNG
2022-01-07 06:39:24 +09:00
committed by Bart Van Assche
parent 39df8aeec1
commit a7da5e48c1
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/ufs/ufshcd.c
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@@ -7910,7 +7910,7 @@ 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 /