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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-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 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 *hba) return -EINVAL; } + if (pwr_info->lane_rx != pwr_info->lane_tx) { + dev_err(hba->dev, "%s: asymmetric connected lanes. rx=%d, tx=%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. 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Thu, 10 Oct 2024 07:42:31 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp1.samsung.com (KnoxPortal) with ESMTP id 20241010074231epsmtrp1b66a5fe9757a26bc2cb4fc589383614c~9B5EaFOSz0182601826epsmtrp1b; Thu, 10 Oct 2024 07:42:31 +0000 (GMT) X-AuditID: b6c32a45-671ff700000024b4-5d-670785688f42 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 03.76.08229.76587076; Thu, 10 Oct 2024 16:42:31 +0900 (KST) Received: from rack03.dsn.sec.samsung.com (unknown [10.229.95.126]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20241010074231epsmtip2f358f63f1a26e3804918b72c715ba9b0~9B5EJhQEq1882818828epsmtip2e; Thu, 10 Oct 2024 07:42:31 +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 2/2] scsi: ufs: core: reflect function execution result in return Date: Thu, 10 Oct 2024 16:52:29 +0900 Message-Id: <300052382d9d03bf087d71201bd159805b8fd041.1728544727.git.hy50.seo@samsung.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNJsWRmVeSWpSXmKPExsWy7bCmqW5GK3u6Qcd0fosH87axWbz8eZXN 4uDDThaLaR9+Mlu8PKRp8evvenaLv7cvslqsXvyAxWLRjW1MFrv+NjNZbL2xk8Xi5pajLBaX d81hs+i+voPNYvnxf0wWU18cZ7dY+u8ti8XmS99YHIQ8Ll/x9piw6ACjx/f1HWweH5/eYvGY uKfOo2/LKkaPz5vkPNoPdDMFcERl22SkJqakFimk5iXnp2TmpdsqeQfHO8ebmhkY6hpaWpgr KeQl5qbaKrn4BOi6ZeYAfaKkUJaYUwoUCkgsLlbSt7Mpyi8tSVXIyC8usVVKLUjJKTAv0CtO zC0uzUvXy0stsTI0MDAyBSpMyM649dK6YAV7xe2WxAbGFrYuRk4OCQETiS2vDzJ1MXJxCAns YJQ4cvUgK4TziVHi95ErjBDON0aJ7hXXmGFaXm84DZXYC5Q4vx2q5QejxILlDxlBqtgENCTW HDsENlhEYC6zxKL598ASzAJqEp/vLmMBsYUFwiSW370CZrMIqEocntDJCmLzCkRJ/LmzhR1i nbzEoobfTCA2p4CFxMcP/6FqBCVOznzCAjFTXqJ562xmkGUSAic4JA6uboNqdpE49u841N3C Eq+OwwyVknjZD1LDAWQXS8xaWA3R28AocWj2LKgaY4lZz9oZQWqYBTQl1u/ShyhXljhyC2ot n0TH4b9Q1bwSDRt/Q03klehoE4IIK0mcmXsbKiwhcXB2DoTpIbF8g+oERsVZSF6ZheSVWQhb FzAyr2IUSy0ozk1PLTYqMITHbnJ+7iZGcKrWct3BOPntB71DjEwcjIcYJTiYlUR4dReypgvx piRWVqUW5ccXleakFh9iNAUG9ERmKdHkfGC2yCuJNzSxNDAxMzM0NzI1MFcS573XOjdFSCA9 sSQ1OzW1ILUIpo+Jg1OqgUm3zee2+u1WS/WXR1WOzWiMW8m9Qkt5QivTvRnTHd8KCmxqYpUU dmae8z/sSkDPygNi0bOVlNftWz1VdmtxVdHBi+6LzBSs4x2my2gVsyfcmHS5/+EM6w8JQq23 XT1U+ZN2KxT5t+pEXXqk573QPl20kmfLjdaNqZ6fzgta3++ctjNWc/7bzT3PreZqh3yKMVD8 EfM/df579hLLBaUfJUuee1h3SV9Sv8UhtOul2hx9tT1crat3JEsFVQldfbq2IOsUw3fvGete lMY4zVo2KTLH2vf/io3HZKxqPW1sAz+YzuI/9GBe7gGFPNPmuvuP/OZf1bkk6j/f09O333Q7 U13DsdQZzBU7TuUVCJ8JUWIpzkg01GIuKk4EANKds11eBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupkkeLIzCtJLcpLzFFi42LZdlhJXje9lT3dYOkNTYsH87axWbz8eZXN 4uDDThaLaR9+Mlu8PKRp8evvenaLv7cvslqsXvyAxWLRjW1MFrv+NjNZbL2xk8Xi5pajLBaX d81hs+i+voPNYvnxf0wWU18cZ7dY+u8ti8XmS99YHIQ8Ll/x9piw6ACjx/f1HWweH5/eYvGY uKfOo2/LKkaPz5vkPNoPdDMFcERx2aSk5mSWpRbp2yVwZdx6aV2wgr3idktiA2MLWxcjJ4eE gInE6w2nGbsYuTiEBHYzSny6/JcFIiEh8X9xExOELSxxv+UIK0TRN0aJO1sOMIMk2AQ0JNYc O8QEkhAR2Mws8X9THytIgllATeLz3WVgk4QFQiSWT1oPNolFQFXi8IROsBpegSiJP3e2sENs kJdY1PAbrIZTwELi44f/YDVCAuYSxw78ZoaoF5Q4OfMJC8R8eYnmrbOZJzAKzEKSmoUktYCR aRWjZGpBcW56brFhgWFearlecWJucWleul5yfu4mRnBsaWnuYNy+6oPeIUYmDsZDjBIczEoi vLoLWdOFeFMSK6tSi/Lji0pzUosPMUpzsCiJ84q/6E0REkhPLEnNTk0tSC2CyTJxcEo1MO3y 82jpe3yaxaTSObrNKCDM3/ar0LXp8ScT/r/Plas7qyNY3Rq3SWqBVVfLkeqTp5dPW7Xpd9cy B4ldH1n+VFUv7j/LmSnAsnvxNc/CKfU3etNaDuRJXXVMPJyducLfZpqzF6uTlQ5H8iIlHyap nqupHxQ3pIl83MPFfvyAcFhA8aRd3CnK37tWnk583fXKvNLpou7eB3PY7eyD/tpff2pzzOnB x+uGW/bvNLVWlBOetKJgahfH04afJ0JzX703F5wqp7Sp8ukVzcuHGqd/ez2bQfmftYqP5PPu tT8e3OF6ZZXCm+Ds94s7xkrj8jRt8cjewBU/lIrCvNcl/WVpyduVq2Ea2zKhatvtCVGTlViK MxINtZiLihMBvDFz5xwDAAA= X-CMS-MailID: 20241010074231epcas2p2d15a81d68b68d757039a56e8dd9cca3c X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P X-CPGSPASS: Y DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20241010074231epcas2p2d15a81d68b68d757039a56e8dd9cca3c References: If an error is returned in the power mode function, it is returned and modified to cause failure in the UFS linkup. If it is an asymmetric connected lane, the UFS init can fail because it is an incorrect situation. Signed-off-by: SEO HOYOUNG --- drivers/ufs/core/ufshcd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index 387eec6f19ef..1381eb7d506a 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8587,7 +8587,8 @@ static int ufshcd_device_params_init(struct ufs_hba *hba) hba->dev_info.f_power_on_wp_en = flag; /* Probe maximum power mode co-supported by both UFS host and device */ - if (ufshcd_get_max_pwr_mode(hba)) + ret = ufshcd_get_max_pwr_mode(hba); + if (ret) dev_err(hba->dev, "%s: Failed getting max supported power mode\n", __func__);