> -----Original Message----- > From: sheebab <sheebab@xxxxxxxxxxx> > Sent: 03 December 2019 15:37 > To: alim.akhtar@xxxxxxxxxxx; avri.altman@xxxxxxx; > pedrom.sousa@xxxxxxxxxxxx; jejb@xxxxxxxxxxxxx; > martin.petersen@xxxxxxxxxx; stanley.chu@xxxxxxxxxxxx; > beanhuo@xxxxxxxxxx; yuehaibing@xxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; vigneshr@xxxxxx > Cc: mparab@xxxxxxxxxxx; rafalc@xxxxxxxxxxx; sheebab > <sheebab@xxxxxxxxxxx> > Subject: [PATCH] scsi: ufs: Disable autohibern8 feature in Cadence UFS > > 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 > > Signed-off-by: sheebab <sheebab@xxxxxxxxxxx> > --- Probably we want to mark this as FIX for the older kernel version? Reviewed-by: Alim Akhtar <alim.akhtar@xxxxxxxxxxx> > drivers/scsi/ufs/cdns-pltfrm.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c index > b2af04c57a39..882425d1166b 100644 > --- a/drivers/scsi/ufs/cdns-pltfrm.c > +++ b/drivers/scsi/ufs/cdns-pltfrm.c > @@ -98,6 +98,12 @@ static int cdns_ufs_link_startup_notify(struct ufs_hba > *hba, > * completed. > */ > 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; > } > -- > 2.17.1
