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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-658b4256a4bsm2782251a12.2.2026.01.29.03.48.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 29 Jan 2026 03:48:48 -0800 (PST) Message-ID: <0fddd038-185a-4cc0-b080-d12ba973cce3@oss.qualcomm.com> Date: Thu, 29 Jan 2026 12:48:44 +0100 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 2/3] spi: geni-qcom: Fix abort sequence execution for serial engine errors To: Praveen Talari , Mark Brown , 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 References: <20260122151008.2149252-1-praveen.talari@oss.qualcomm.com> <20260122151008.2149252-3-praveen.talari@oss.qualcomm.com> <9d9d4d3d-42bf-4f4a-99d3-19df73f89c30@oss.qualcomm.com> <95bdb386-1635-4f8b-84dd-b5123d271b7d@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <95bdb386-1635-4f8b-84dd-b5123d271b7d@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: wgWfXrlMNcH4A8xspY7Q_duulSZDKhee X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTI5MDA3OSBTYWx0ZWRfXyUUmnOIPsSis lXb96dsNCql6/KgAx6cnSlfbz7rC6JU8n8R9Xjf33g5/zGra5rXpTIwcan56/g9qEdtkaAKZqJE 9iqztgSz8S/wgDseleLjmY4N37qvsdzhe04XlZromg2VQK0ysaMsgytsO44plZ24sykTbffiAK7 kA5O2tqznorxYaBSBE0quc3Uku9xkUd3ofxaM8wXQBB3Z+03g7wfkHQ/2ryMATE5naTG/mKTX9E B4uPGgPjf6xhZxedfuaB2w1NNI5Y/wQzvymyn69GuWnw41ayK60pnBZ/rlL7fnnOwp4yLvARCaI 3gWxekuEJsgFwUaazEWbWDc3NWIsvD2tdsmQz6qQtUwtVkHmwsGlsmRdKq3escsv4yKWGq6gXOC 98c0I6bwfcI0DHid9DOpLsgo852pMjxuqmQjRULlPN+0ViVyekXs1Sc+Lukvkt/ZFSvRSR0AVAn PEGSkkvMiHoG/1HnwzQ== X-Proofpoint-ORIG-GUID: wgWfXrlMNcH4A8xspY7Q_duulSZDKhee X-Authority-Analysis: v=2.4 cv=betmkePB c=1 sm=1 tr=0 ts=697b4923 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=0IK_tM0JmRZ4naO6_g0A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-01-29_02,2026-01-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 malwarescore=0 impostorscore=0 bulkscore=0 adultscore=0 priorityscore=1501 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601290079 On 1/28/26 5:22 PM, Praveen Talari wrote: > 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 >>> --- >>>   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); I think we can make it even shorter: diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index 231fd31de048..59567ef6759e 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -161,25 +161,20 @@ static void handle_se_timeout(struct spi_controller *spi, xfer = mas->cur_xfer; mas->cur_xfer = NULL; - if (spi->target) { - /* - * skip CMD Cancel sequnece since spi target - * doesn`t support CMD Cancel sequnece - */ + /* The controller doesn't support the Cancel commnand in target mode */ + if (!spi->target) { + reinit_completion(&mas->cancel_done); + geni_se_cancel_m_cmd(se); + spin_unlock_irq(&mas->lock); - goto abort; + + 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->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; - -abort: - spin_lock_irq(&mas->lock); reinit_completion(&mas->abort_done); geni_se_abort_m_cmd(se); spin_unlock_irq(&mas->lock); Konrad