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charset="utf-8" CMS-TYPE: 105P X-CMS-RootMailID: 20191203100929epcas3p3e781cc87ff70f82bc1e708ba654456d2 References: <1575367635-22662-1-git-send-email-sheebab@cadence.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: sheebab > Sent: 03 December 2019 15:37 > To: alim.akhtar@samsung.com; avri.altman@wdc.com; > pedrom.sousa@synopsys.com; jejb@linux.ibm.com; > martin.petersen@oracle.com; stanley.chu@mediatek.com; > beanhuo@micron.com; yuehaibing@huawei.com; linux-scsi@vger.kernel.org; > linux-kernel@vger.kernel.org; vigneshr@ti.com > Cc: mparab@cadence.com; rafalc@cadence.com; sheebab > > 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 > --- Probably we want to mark this as FIX for the older kernel version? Reviewed-by: Alim Akhtar > 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