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scsi: ufs: Disable autohibern8 feature in Cadence UFS

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commit d168001d14eccfda229b4a41a2c31a21e3c379da upstream.

This patch disables autohibern8 feature in Cadence UFS.  The autohibern8
feature has issues due to which unexpected interrupt trigger is happening.
After the interrupt issue is sorted out, autohibern8 feature will be
re-enabled

Link: https://lore.kernel.org/r/1575367635-22662-1-git-send-email-sheebab@cadence.com
Cc: <stable@vger.kernel.org>
Signed-off-by: sheebab <sheebab@cadence.com>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
sheebab 2019-12-03 11:07:15 +01:00 committed by Greg Kroah-Hartman
parent e3e1ba0bef
commit f306f06d9a
1 changed files with 6 additions and 0 deletions
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6
drivers/scsi/ufs/cdns-pltfrm.c
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@ -99,6 +99,12 @@ static int cdns_ufs_link_startup_notify(struct ufs_hba *hba,
*/
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_LOCAL_TX_LCC_ENABLE), 0);
/*
* Disabling Autohibern8 feature in cadence UFS
* to mask unexpected interrupt trigger.
*/
hba->ahit = 0;
return 0;
}