linux-kernel - Re: [PATCH v1 2/3] spi: geni-qcom: Fix abort sequence execution for serial engine errors

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Message-ID: <95bdb386-1635-4f8b-84dd-b5123d271b7d@oss.qualcomm.com>
Date: Wed, 28 Jan 2026 21:52:19 +0530
From: Praveen Talari <praveen.talari@....qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Mark Brown <broonie@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        bjorn.andersson@....qualcomm.com, dmitry.baryshkov@....qualcomm.com
Cc: prasad.sodagudi@....qualcomm.com, mukesh.savaliya@....qualcomm.com,
        quic_vtanuku@...cinc.com, aniket.randive@....qualcomm.com,
        chandana.chiluveru@....qualcomm.com, jyothi.seerapu@....qualcomm.com
Subject: Re: [PATCH v1 2/3] spi: geni-qcom: Fix abort sequence execution for
 serial engine errors

HI Konrad,

Thank you for review.

On 1/27/2026 6:47 PM, Konrad Dybcio wrote:
> On 1/22/26 4:10 PM, Praveen Talari wrote:
>> The driver currently skips the abort sequence for target mode when serial
>> engine errors occur. This leads to improper error recovery as the serial
>> engine may remain in an undefined state without proper cleanup, potentially
>> causing subsequent operations to fail or behave unpredictably.
>>
>> Fix this by ensuring the abort sequence and DMA reset always execute during
>> error recovery, as both are required for proper serial engine error
>> handling.
>>
>> Signed-off-by: Praveen Talari <praveen.talari@....qualcomm.com>
>> ---
>>   drivers/spi/spi-geni-qcom.c | 3 ++-
>>   1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
>> index f5d05025b196..e5320e2fb834 100644
>> --- a/drivers/spi/spi-geni-qcom.c
>> +++ b/drivers/spi/spi-geni-qcom.c
>> @@ -167,7 +167,7 @@ static void handle_se_timeout(struct spi_controller *spi,
>>   		 * doesn`t support CMD Cancel sequnece
>>   		 */
>>   		spin_unlock_irq(&mas->lock);
>> -		goto reset_if_dma;
>> +		goto abort;
>>   	}
>>   
>>   	reinit_completion(&mas->cancel_done);
>> @@ -178,6 +178,7 @@ static void handle_se_timeout(struct spi_controller *spi,
>>   	if (time_left)
>>   		goto reset_if_dma;
>>   
>> +abort:
>>   	spin_lock_irq(&mas->lock);
> 
> Now that the jump is just 5 LoC, you can dispose of the goto and change it
> to an if-statement

Is the modification below good?

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index f5d05025b196..4feaf24d47ea 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -167,16 +167,15 @@ static void handle_se_timeout(struct 
spi_controller *spi,
                  * doesn`t support CMD Cancel sequnece
                  */
                 spin_unlock_irq(&mas->lock);
-               goto reset_if_dma;
-       }
-
-       reinit_completion(&mas->cancel_done);
-       geni_se_cancel_m_cmd(se);
-       spin_unlock_irq(&mas->lock);
+       } else {
+               reinit_completion(&mas->cancel_done);
+               geni_se_cancel_m_cmd(se);
+               spin_unlock_irq(&mas->lock);

-       time_left = wait_for_completion_timeout(&mas->cancel_done, HZ);
-       if (time_left)
-               goto reset_if_dma;
+               time_left = 
wait_for_completion_timeout(&mas->cancel_done, HZ);
+               if (time_left)
+                       goto reset_if_dma;
+       }

         spin_lock_irq(&mas->lock);
         reinit_completion(&mas->abort_done);

Thanks,
Praveen Talari
> 
> Konrad