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Mon, 13 Jan 2020 18:59:03 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 13 Jan 2020 10:59:03 -0800 From: asutoshd@codeaurora.org To: Stanley Chu Cc: linux-scsi@vger.kernel.org, martin.petersen@oracle.com, avri.altman@wdc.com, alim.akhtar@samsung.com, jejb@linux.ibm.com, beanhuo@micron.com, cang@codeaurora.org, matthias.bgg@gmail.com, bvanassche@acm.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kuohong.wang@mediatek.com, peter.wang@mediatek.com, chun-hung.wu@mediatek.com, andy.teng@mediatek.com Subject: Re: [PATCH v1 2/3] scsi: ufs: add device reset history for vendor implementations In-Reply-To: <1578147968-30938-3-git-send-email-stanley.chu@mediatek.com> References: <1578147968-30938-1-git-send-email-stanley.chu@mediatek.com> <1578147968-30938-3-git-send-email-stanley.chu@mediatek.com> Message-ID: <20ed97a2333ff27d5901c373579f710a@codeaurora.org> X-Sender: asutoshd@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020-01-04 06:26, Stanley Chu wrote: > Device reset history shall be also added for vendor's device > reset variant operation implementation. > > Cc: Alim Akhtar > Cc: Asutosh Das > Cc: Avri Altman > Cc: Bart Van Assche > Cc: Bean Huo > Cc: Can Guo > Cc: Matthias Brugger > Signed-off-by: Stanley Chu > --- > drivers/scsi/ufs/ufshcd.c | 5 +++-- > drivers/scsi/ufs/ufshcd.h | 6 +++++- > 2 files changed, 8 insertions(+), 3 deletions(-) > > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c > index bae43da00bb6..29e3d50aabfb 100644 > --- a/drivers/scsi/ufs/ufshcd.c > +++ b/drivers/scsi/ufs/ufshcd.c > @@ -4346,13 +4346,14 @@ static inline int > ufshcd_disable_device_tx_lcc(struct ufs_hba *hba) > return ufshcd_disable_tx_lcc(hba, true); > } > > -static void ufshcd_update_reg_hist(struct ufs_err_reg_hist *reg_hist, > - u32 reg) > +void ufshcd_update_reg_hist(struct ufs_err_reg_hist *reg_hist, > + u32 reg) > { > reg_hist->reg[reg_hist->pos] = reg; > reg_hist->tstamp[reg_hist->pos] = ktime_get(); > reg_hist->pos = (reg_hist->pos + 1) % UFS_ERR_REG_HIST_LENGTH; > } > +EXPORT_SYMBOL_GPL(ufshcd_update_reg_hist); > > /** > * ufshcd_link_startup - Initialize unipro link startup > diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h > index e05cafddc87b..de1be6a862b0 100644 > --- a/drivers/scsi/ufs/ufshcd.h > +++ b/drivers/scsi/ufs/ufshcd.h > @@ -805,6 +805,8 @@ int ufshcd_wait_for_register(struct ufs_hba *hba, > u32 reg, u32 mask, > u32 val, unsigned long interval_us, > unsigned long timeout_ms, bool can_sleep); > void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk > *refclk); > +void ufshcd_update_reg_hist(struct ufs_err_reg_hist *reg_hist, > + u32 reg); > > static inline void check_upiu_size(void) > { > @@ -1083,8 +1085,10 @@ static inline void > ufshcd_vops_dbg_register_dump(struct ufs_hba *hba) > > static inline void ufshcd_vops_device_reset(struct ufs_hba *hba) > { > - if (hba->vops && hba->vops->device_reset) > + if (hba->vops && hba->vops->device_reset) { > hba->vops->device_reset(hba); > + ufshcd_update_reg_hist(&hba->ufs_stats.dev_reset, 0); > + } > } > > extern struct ufs_pm_lvl_states ufs_pm_lvl_states[]; Reviewed-by: Asutosh Das