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Tue, 04 Nov 2025 02:57:21 -0800 (PST) X-Google-Smtp-Source: AGHT+IEHeauPRKvSaQfwjZoWhPXPVkD5UEZgsLll5lxQv70Owt2nEGVc1ASjz7ivNXbz+Pbfiny4nw== X-Received: by 2002:a05:6a00:28cb:b0:7aa:4b8:179 with SMTP id d2e1a72fcca58-7aa04b80436mr8377780b3a.1.1762253840541; Tue, 04 Nov 2025 02:57:20 -0800 (PST) Received: from [10.219.56.14] ([202.46.23.19]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7acd382ad96sm2563399b3a.22.2025.11.04.02.57.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Nov 2025 02:57:20 -0800 (PST) Message-ID: <2dd128f2-d41f-4eda-a393-260098749a07@oss.qualcomm.com> Date: Tue, 4 Nov 2025 16:27:12 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/6] of: add infra to parse iommu-map per IOMMU cell count To: kernel test robot , robin.murphy@arm.com, will@kernel.org, joro@8bytes.org, robh@kernel.org, dmitry.baryshkov@oss.qualcomm.com, konrad.dybcio@oss.qualcomm.com, bjorn.andersson@oss.qualcomm.com, bod@kernel.org, conor+dt@kernel.org, krzk+dt@kernel.org, saravanak@google.com, prakash.gupta@oss.qualcomm.com, vikash.garodia@oss.qualcomm.com Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, iommu@lists.linux.dev, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <74d4ddf90c0fb485fda1feec5116dc38e5fd23cf.1762235099.git.charan.kalla@oss.qualcomm.com> <202511041853.IxYgvWlc-lkp@intel.com> Content-Language: en-US From: Charan Teja Kalla In-Reply-To: <202511041853.IxYgvWlc-lkp@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: YsZd25J5C4rvm5wHVGvShfEEA5fc4DKR X-Authority-Analysis: v=2.4 cv=bqBBxUai c=1 sm=1 tr=0 ts=6909dc11 cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=yE59AjuNBYSqEwnZTzMA:9 a=QEXdDO2ut3YA:10 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA0MDA5MCBTYWx0ZWRfX3DfA4TQoFTF0 6zHJYd0mD4589Nnjm3t0Et0kRaghAFmoDjOo9fucKh/awN0T0W/YgqkE5Vi/D6lxorBFQ4wN3qb vmClMc6FAvgRiCg56IR9G8c8Rhsz/l/06smSTneyOrH7B96fz+9UZLI0f25P/PisrrjloMUuvzk vK39Nnmt47go0XGVTItTRRPfGTfd/njfPe1rszYgW3kWegWI5cMkhqGsTpACOnPYV6K/Biz40EZ /5HkH/pWJKxnciZBvucpjwHVwlm6HsFCOQzAQA4uSBKS4guNl6Pt9jNLHADhujf1J2F3FdhGdSc pAptfkZcV2ng4RTCDyBNGPtYXBoHt0v3KHXP03hEq48PditEl/wNdm8KuVWU5lUAiw0Xx7PrjZF /YGO9teq2UvCvrALBUlic+2v4Rzy7A== X-Proofpoint-GUID: YsZd25J5C4rvm5wHVGvShfEEA5fc4DKR X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-03_06,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 malwarescore=0 impostorscore=0 spamscore=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2511040090 On 11/4/2025 4:16 PM, kernel test robot wrote: >>> drivers/of/base.c:2127:6: warning: variable 'legacy_iommu_cells' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] > 2127 | if (map_len % 4 != 0) > | ^~~~~~~~~~~~~~~~ > drivers/of/base.c:2130:9: note: uninitialized use occurs here > 2130 | return legacy_iommu_cells ? : of_iommu_map_id_actual_cell_count(map, map_len, cells); > | ^~~~~~~~~~~~~~~~~~ > drivers/of/base.c:2127:2: note: remove the 'if' if its condition is always true > 2127 | if (map_len % 4 != 0) > | ^~~~~~~~~~~~~~~~~~~~~ > 2128 | legacy_iommu_cells = of_iommu_map_id_legacy_cell_count(map, map_len); > drivers/of/base.c:2125:24: note: initialize the variable 'legacy_iommu_cells' to silence this warning > 2125 | u32 legacy_iommu_cells; > | ^ > | = 0 > 1 warning generated. Will wait for additional comments and take care of this in the next spin.