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[193.239.59.185]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b664ae576asm1527357a12.19.2026.11.07.00.13.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Nov 2026 00:13:38 -0800 (PST) From: Kyrylo Biryuk To: rylos78@gmail.com Cc: cassel@kernel.org, dlemoal@kernel.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] ata: libata-pmp: disable the SEMB port on Marvell 88SM9705 Date: Sat, 7 Nov 2026 09:13:35 +0100 Message-ID: <20261107081335.3360920-1-illofspeed@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261103215706.508495-1-illofspeed@gmail.com> References: <20261103215706.508495-1-illofspeed@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Tested on a Synology DX1222: four 88SM9705 (0x1b4b:0x9705 r160, 6 ports) behind an 88SE9235 that is passed through to a KVM guest, 6 disks. The same 7.4-rc1 tree built with and without the patch, one boot each: softreset reset failed, last disk failed giving up attached 7.4-rc1, no libata.force 60 12 197 s 7.4-rc1, libata.force=N.05:norst 0 0 70 s 7.4-rc1 + this patch, no force 0 0 11 s With the patch, each PMP logs one "ataN.05: failed to resume link (SControl 0)" and port 5 is then left alone. The same disks attach in all three boots. Tested-by: Kyrylo Biryuk The test boots were scripted and run by an AI coding assistant on my hardware; I checked the logs. Kyrylo Biryuk