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Subject: Re: [PATCH v3 3/3] scsi: ufs: Print host regs in IRQ handler when AH8
 error happens
To:     Can Guo <cang@codeaurora.org>, nguyenb@codeaurora.org,
        hongwus@codeaurora.org, ziqichen@codeaurora.org,
        rnayak@codeaurora.org, linux-scsi@vger.kernel.org,
        kernel-team@android.com, saravanak@google.com, salyzyn@google.com
Cc:     Alim Akhtar <alim.akhtar@samsung.com>,
        Avri Altman <avri.altman@wdc.com>,
        "James E.J. Bottomley" <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Stanley Chu <stanley.chu@mediatek.com>,
        Bean Huo <beanhuo@micron.com>,
        Bart Van Assche <bvanassche@acm.org>,
        open list <linux-kernel@vger.kernel.org>
References: <1605596660-2987-1-git-send-email-cang@codeaurora.org>
 <1605596660-2987-4-git-send-email-cang@codeaurora.org>
From:   "Asutosh Das (asd)" <asutoshd@codeaurora.org>
Message-ID: <1b2aacf0-ebc2-e541-2db5-2d595b4b392f@codeaurora.org>
Date:   Tue, 17 Nov 2020 09:23:28 -0800
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On 11/16/2020 11:04 PM, Can Guo wrote:
> When AH8 error happens, all the regs and states are dumped in err handler.
> Sometime we need to look into host regs right after AH8 error happens,
> which is before leaving the IRQ handler.
> 
> Signed-off-by: Can Guo <cang@codeaurora.org>
> ---

Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>

>   drivers/scsi/ufs/ufshcd.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index cd7394e..a7857f6 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -6057,7 +6057,8 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba)
>   		hba->saved_uic_err |= hba->uic_error;
>   
>   		/* dump controller state before resetting */
> -		if ((hba->saved_err & (INT_FATAL_ERRORS)) ||
> +		if ((hba->saved_err &
> +		     (INT_FATAL_ERRORS | UFSHCD_UIC_HIBERN8_MASK)) ||
>   		    (hba->saved_uic_err &&
>   		     (hba->saved_uic_err != UFSHCD_UIC_PA_GENERIC_ERROR))) {
>   			dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x\n",
> 


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