linux-kernel - Re: [PATCH v1 3/3] spi: geni-qcom: Add target abort support

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Message-ID: <7c0883eb-3147-4b83-908b-b5c0ff909481@oss.qualcomm.com>
Date: Thu, 29 Jan 2026 12:42:50 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Praveen Talari <praveen.talari@....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 3/3] spi: geni-qcom: Add target abort support

On 1/28/26 5:28 PM, Praveen Talari wrote:
> Hi Konrad
> 
> On 1/27/2026 6:51 PM, Konrad Dybcio wrote:
>> On 1/22/26 4:10 PM, Praveen Talari wrote:
>>> SPI target mode currently lacks a mechanism to gracefully abort ongoing
>>> transfers when the client or core needs to cancel active transactions.
>>>
>>> Implement spi_geni_target_abort() to handle aborting SPI target
>>> operations when the client and core want to cancel ongoing transfers.
>>> This provides a mechanism for graceful termination of active SPI
>>> transactions in target mode.
>>>
>>> Signed-off-by: Praveen Talari <praveen.talari@....qualcomm.com>
>>> ---
>>>   drivers/spi/spi-geni-qcom.c | 14 ++++++++++++++
>>>   1 file changed, 14 insertions(+)
>>>
>>> diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
>>> index e5320e2fb834..231fd31de048 100644
>>> --- a/drivers/spi/spi-geni-qcom.c
>>> +++ b/drivers/spi/spi-geni-qcom.c
>>> @@ -1009,6 +1009,17 @@ static irqreturn_t geni_spi_isr(int irq, void *data)
>>>       return IRQ_HANDLED;
>>>   }
>>>   +static int spi_geni_target_abort(struct spi_controller *spi)
>>> +{
>>> +    if (!spi->cur_msg)
>>> +        return 0;
>>> +
>>> +    handle_se_timeout(spi, spi->cur_msg);
>>
>> I can't help but notice this function never even dereferences this
>> argument
> 
> Yes, you’re correct. Since the argument is never dereferenced, it is safe to pass either cur_msg or NULL here.

Would you like to send a patch removing the unused argument?

Konrad