Linux SPI subsystem development
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From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Praveen Talari <praveen.talari@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 3/3] spi: geni-qcom: Add target abort support
Date: Thu, 29 Jan 2026 12:42:50 +0100	[thread overview]
Message-ID: <7c0883eb-3147-4b83-908b-b5c0ff909481@oss.qualcomm.com> (raw)
In-Reply-To: <700e3ce3-776f-4ee7-86e2-40608deffc0d@oss.qualcomm.com>

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@oss.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

  reply	other threads:[~2026-01-29 11:42 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
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 [this message]
2026-01-29 15:50         ` Praveen Talari

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