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Sun, 28 Jan 2024 23:52:35 -0800 (PST) Received: from [127.0.1.1] ([117.193.214.109]) by smtp.gmail.com with ESMTPSA id t19-20020a62d153000000b006dddd685bbesm5467329pfl.122.2024.01.28.23.52.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Jan 2024 23:52:35 -0800 (PST) From: Manivannan Sadhasivam Date: Mon, 29 Jan 2024 13:22:05 +0530 Subject: [PATCH 2/3] scsi: ufs: qcom: Clarify the comment of core_reset property Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240129-ufs-core-reset-fix-v1-2-7ac628aa735f@linaro.org> References: <20240129-ufs-core-reset-fix-v1-0-7ac628aa735f@linaro.org> In-Reply-To: <20240129-ufs-core-reset-fix-v1-0-7ac628aa735f@linaro.org> To: Bjorn Andersson , Konrad Dybcio , Alim Akhtar , Avri Altman , Bart Van Assche , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Gross , Andy Gross , "James E.J. Bottomley" , "Martin K. Petersen" Cc: linux-arm-msm@vger.kernel.org, linux-scsi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=1271; i=manivannan.sadhasivam@linaro.org; h=from:subject:message-id; bh=b4SvtNNZZGQQZdkuWZ0Rfu0VJ9qiw++F96jBPPIZhZs=; b=owEBbQGS/pANAwAKAVWfEeb+kc71AcsmYgBlt1kv1hrO9+0MMLmC+cLokw5vh0sPSCLyGClUL iO40O5pPy6JATMEAAEKAB0WIQRnpUMqgUjL2KRYJ5dVnxHm/pHO9QUCZbdZLwAKCRBVnxHm/pHO 9bh0CACPfxmuj/KcHNlhnpH/G/Dg1ykQ5lhbNfrrhMDXVU0Jb0xfTcfNLuTqFkKYX4PZl95a4c/ CrFfQg8SWnAAu5DVuUOFenyIsOTbRjHVABF0ZeAHR4KlxAkfRHTiVAoI2PoQWy/8q9tepAsPeuo WbNTSDwdyvBRt3pYy9XkVtENiGT7McWlnrEKDF5iffiPSIP6u8xj//GzK8JlcJhUftRsL+INDKw 46d15Qj3cfgBVAHOd4Q2XCxHptMHOUBxEUfCqT3RBvu3ATGSJ5KUzD1QnE1re6PjR2JhRMSqpxE QDgq9N7F57ExO8JINPdbH7NRyrMjvaEyarMjUH3s5Ndgaqup X-Developer-Key: i=manivannan.sadhasivam@linaro.org; a=openpgp; fpr=C668AEC3C3188E4C611465E7488550E901166008 core_reset is not an optional property for the platforms supported in upstream. Only for the non-upstreamed legacy platforms it is optional. But somehow a few of the upstreamed platforms do not pass this property by mistake. So clarify the comment to make it clear that even though core_reset is required, it is kept as optional to support the DTs that do not pass this property. Signed-off-by: Manivannan Sadhasivam --- drivers/ufs/host/ufs-qcom.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 39eef470f8fa..32760506dfeb 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -1027,7 +1027,11 @@ static int ufs_qcom_init(struct ufs_hba *hba) host->hba = hba; ufshcd_set_variant(hba, host); - /* Setup the optional reset control of HCI */ + /* + * Even though core_reset is required on all platforms, some DTs never + * passed this property. So we have to keep it optional for supporting + * them. + */ host->core_reset = devm_reset_control_get_optional(hba->dev, "rst"); if (IS_ERR(host->core_reset)) { err = dev_err_probe(dev, PTR_ERR(host->core_reset), -- 2.25.1