Linux SPI subsystem development
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From: Praveen Talari <praveen.talari@oss.qualcomm.com>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
	Mark Brown <broonie@kernel.org>,
	linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org,
	linux-kernel@vger.kernel.org, bjorn.andersson@oss.qualcomm.com,
	dmitry.baryshkov@oss.qualcomm.com
Cc: prasad.sodagudi@oss.qualcomm.com,
	mukesh.savaliya@oss.qualcomm.com, quic_vtanuku@quicinc.com,
	aniket.randive@oss.qualcomm.com,
	chandana.chiluveru@oss.qualcomm.com,
	jyothi.seerapu@oss.qualcomm.com
Subject: Re: [PATCH v1 2/3] spi: geni-qcom: Fix abort sequence execution for serial engine errors
Date: Wed, 28 Jan 2026 21:52:19 +0530	[thread overview]
Message-ID: <95bdb386-1635-4f8b-84dd-b5123d271b7d@oss.qualcomm.com> (raw)
In-Reply-To: <9d9d4d3d-42bf-4f4a-99d3-19df73f89c30@oss.qualcomm.com>

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@oss.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


  reply	other threads:[~2026-01-28 16:22 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-22 15:10 [PATCH v1 0/3] Improve SPI target mode support and error handling Praveen Talari
2026-01-22 15:10 ` [PATCH v1 1/3] spi: geni-qcom: Improve target mode allocation by using proper allocation functions Praveen Talari
2026-01-27 13:15   ` Konrad Dybcio
2026-01-28 16:32     ` Praveen Talari
2026-01-29 11:42       ` Konrad Dybcio
2026-01-29 15:45         ` Praveen Talari
2026-01-30 11:22           ` Konrad Dybcio
2026-01-22 15:10 ` [PATCH v1 2/3] spi: geni-qcom: Fix abort sequence execution for serial engine errors Praveen Talari
2026-01-27 13:17   ` Konrad Dybcio
2026-01-28 16:22     ` Praveen Talari [this message]
2026-01-29 11:48       ` Konrad Dybcio
2026-01-29 15:49         ` Praveen Talari
2026-01-29 15:10   ` [PATCH " Markus Elfring
2026-01-22 15:10 ` [PATCH v1 3/3] spi: geni-qcom: Add target abort support Praveen Talari
2026-01-27 13:21   ` Konrad Dybcio
2026-01-28 16:28     ` Praveen Talari
2026-01-29 11:42       ` Konrad Dybcio
2026-01-29 15:50         ` Praveen Talari

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