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Thu, 10 Oct 2024 07:42:29 +0000 (GMT) Received: from epsmgms1p2new.samsung.com (unknown [182.195.42.42]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20241010074229epsmtrp1f6956eac7e1c699b95675d828e9a8a49~9B5CDek_80182601826epsmtrp1X; Thu, 10 Oct 2024 07:42:29 +0000 (GMT) X-AuditID: b6c32a47-d53fa70000002630-e2-6707856566ef Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2new.samsung.com (Symantec Messaging Gateway) with SMTP id 44.55.08227.56587076; Thu, 10 Oct 2024 16:42:29 +0900 (KST) Received: from rack03.dsn.sec.samsung.com (unknown [10.229.95.126]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20241010074228epsmtip2c8730b7f4dd4d673d12d86dc231b3010~9B5B0Hrfi1861218612epsmtip2m; Thu, 10 Oct 2024 07:42:28 +0000 (GMT) From: SEO HOYOUNG To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, alim.akhtar@samsung.com, avri.altman@wdc.com, jejb@linux.ibm.com, martin.petersen@oracle.com, beanhuo@micron.com, bvanassche@acm.org, kwangwon.min@samsung.com, kwmad.kim@samsung.com, sh425.lee@samsung.com, quic_nguyenb@quicinc.com, cpgs@samsung.com, h10.kim@samsung.com, grant.jung@samsung.com, junwoo80.lee@samsung.com, wkon.kim@samsung.com Cc: SEO HOYOUNG Subject: [PATCH v3 1/2] scsi: ufs: core: check asymmetric connected lanes Date: Thu, 10 Oct 2024 16:52:28 +0900 Message-Id: X-Mailer: git-send-email 2.26.0 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Brightmail-Tracker: H4sIAAAAAAAAA01TfUwbZRzOe3dcD0zJrdvklYytnErGkkLLaHkh4Ja44G3TCDo3BRN2oWch lLbpFUQXtW7jYxuhI0M+CuwDBQPMEZBChY3QTmFjZhFwbvIxZ4ZozZiwKQgTsOU63X/P7/k9 v9+T5/2gcNl1MpTKNlh4s4HTM2QQ0XU5UqPgCyU6ZemVCHTndBeJPIs3SOT6+RiBKmcXceRx R6Kl5TYJWh4fDkCtn94hUMOtLgz1LB/BkOPWVwT6sfMbAo321JHoxE0niT4fXMHQJ78NSlDj ygyBvhyZJ3bK2NHv97InG/oBu9BWQrJzv4wRbPnFD9myzhbAPuzYzBb3n8BSqLScxCye0/Jm OW/INGqzDbokZu/rGS9mqDVKlUIVj+IYuYHL5ZOYXS+nKJKz9d4kjDyf0+d5qRROEJjoFxLN xjwLL88yCpYkhjdp9aY4U5TA5Qp5Bl2UgbckqJTKGLVXeDAnq6XOhZkWJQWr1qkAK3CSx0Eg BelYONTXA46DIEpGOwF0z5VgYvEAwIrWL0ixmAewZs6OPx4pnZ/xNy4BOOSwEmLxN4CltjrM pyLprfD8gHtt1wa6HocNZ24DXwOnI+DDySbCh9fTu2HPPx0BPkzQz8NLYwtrw1I6DbrbKwnR bgtssD5a4wNpBOdmVwNEzTp4tWaKEHdugUcctbjPDNJXKHi3qc0fbxcsnJ70L1oPfx/slIg4 FHpsRV5MebEA7ecOibNW7wnU2v2a7dA+XQx8GpyOhG090aL8Wfj1mN82GJZcXvarpdDa/si/ UQpLimQizcBv68f9NISuWr1Is/BGvwOcBOH2J7LYn8hi/9/2LMBbwNO8ScjV8UKMaft/F5xp zO0Aaw9720tOUD0zG+UGGAXcAFI4s0GqOBegk0m13Hvv82ZjhjlPzwtuoPaedDkeujHT6P0Z BkuGKjZeGavRqOJi1Mo4JkR6u7BeK6N1nIXP4XkTb348h1GBoVZMT1bY2ner3wibY8C+A1HT vVV/NB8+Gr6j2ab0RNsu3MefeuWmLvX8c4FysAcq/zwkmbjuKv+1zmZZqWpkKzwTzIQxsO/U 6tZjxfM7ZUkFybMYlTzkWvKcjuw+eMGccP+zM66RjMnqLk+36oPhzR0/1I7wTftD3rRfzS9p tYxFvDvuXHo7cX8ZVzSWe804qQrX6N8KQevUwSwN4hd2gHbdT2qD/Z2qj8uvaUZXs5vvxlzM N4elK3qnhinq3tn56f705MpnUuX3qoMOD6yQZZqNzHeV+5b/2rRn5gBZY0wdDx5daXy1IGFT 4/SDdEVao+Ijx+zAam/YUYcu5LXugT6OIYQsTrUNNwvcv96wSDhhBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupikeLIzCtJLcpLzFFi42LZdlhJXje1lT3dYPURLosH87axWbz8eZXN 4uDDThaLaR9+Mlu8PKRp8evvenaLv7cvslqsXvyAxWLRjW1MFrv+NjNZbL2xk8Xi5pajLBaX d81hs+i+voPNYvnxf0wWU18cZ7dY+u8ti8XmS99YHIQ8Ll/x9piw6ACjx/f1HWweH5/eYvGY uKfOo2/LKkaPz5vkPNoPdDMFcERx2aSk5mSWpRbp2yVwZayac5Cp4Cd7xf+GJ6wNjDvYuhg5 OSQETCR6vr0Fsrk4hAR2M0q8aXrPApGQkPi/uIkJwhaWuN9yhBXEFhL4xijR8T4QxGYT0JBY c+wQE0iziMBmZon/m/rAipgF1CQ+310GNkhYwFNi159NYHEWAVWJvbe+gw3lFYiSOLRxGtQy eYlFDb/B4pwCFhIfP/yHWmYucezAb2aIekGJkzOfsEDMl5do3jqbeQKjwCwkqVlIUgsYmVYx SqYWFOem5xYbFhjlpZbrFSfmFpfmpesl5+duYgRHl5bWDsY9qz7oHWJk4mA8xCjBwawkwqu7 kDVdiDclsbIqtSg/vqg0J7X4EKM0B4uSOO+3170pQgLpiSWp2ampBalFMFkmDk6pBqbYN+9N mblNTj5dOGkl576/pw/6PpF6o/Tl3q0PoanNRTwJl7Zuaw25X+fgd6rupY1umLwgz+KNcw9f r0l+/MAoNnq7UUf1i6tyrLeWtX7appkSfEyw65fXQ/0PuTqW/PO4JnkG7SwsvPpFe/4sv5dr joW9+McY2SxV9l7Fb7qf7b9HOxuO9C3L5Or6uJKt2GH5zYXizpsmvF756UfbdcdpF7+4bzGJ CtjNxnRt7dVzq6OSbujYz+5qm5Oyw8WzT/PK7yUzrdfMbynbzHnv2iIzfeslcxK5nAV//jRe fZWz7HDyrVs997e2nviWsS1ngvyq5uO26yU0exr6xaoijCxFjk17JDy9YfIGQyarnoZgJZbi jERDLeai4kQAVDbNax0DAAA= X-CMS-MailID: 20241010074229epcas2p31ecc33731a96be7958cdd93908a1ce86 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P X-CPGSPASS: Y DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241010074229epcas2p31ecc33731a96be7958cdd93908a1ce86 References: Performance problems may occur if there is a problem with the asymmetric connected lane such as h/w failure. Currently, only check connected lane for rx/tx is checked if it is not 0. But it should also be checked if it is asymmetrically connected. Signed-off-by: SEO HOYOUNG Reviewed-by: Bart Van Assche --- drivers/ufs/core/ufshcd.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 24a32e2fd75e..387eec6f19ef 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -4540,6 +4540,14 @@ static int ufshcd_get_max_pwr_mode(struct ufs_hba *h= ba) return -EINVAL; } =20 + if (pwr_info->lane_rx !=3D pwr_info->lane_tx) { + dev_err(hba->dev, "%s: asymmetric connected lanes. rx=3D%d, tx=3D%d\n", + __func__, + pwr_info->lane_rx, + pwr_info->lane_tx); + return -EINVAL; + } + /* * First, get the maximum gears of HS speed. * If a zero value, it means there is no HSGEAR capability. --=20 2.26.0