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Fri, 26 Jun 2026 23:40:53 -0700 (PDT) Received: from jernej-laptop.localnet ([188.159.248.16]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49269002511sm131006755e9.8.2026.06.26.23.40.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Jun 2026 23:40:53 -0700 (PDT) From: Jernej =?UTF-8?B?xaBrcmFiZWM=?= To: Chen-Yu Tsai , Pengpeng Hou Cc: pengpeng@iscas.ac.cn, Samuel Holland , Philipp Zabel , linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org Subject: Re: [PATCH] bus: sunxi-rsb: fail hardware init on soft-reset timeout Date: Sat, 27 Jun 2026 08:40:52 +0200 Message-ID: In-Reply-To: <20260625003416.15841-1-pengpeng@iscas.ac.cn> References: <20260625003416.15841-1-pengpeng@iscas.ac.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260626_234056_147899_CE03203E X-CRM114-Status: UNSURE ( 8.59 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Dne =C4=8Detrtek, 25. junij 2026 ob 02:34:16 Srednjeevropski poletni =C4=8D= as je Pengpeng Hou napisal(a): > sunxi_rsb_hw_init() issues a controller soft reset and waits for the reset > bit to clear, but it ignores readl_poll_timeout()'s return value. >=20 > If the controller never leaves reset, probe can continue to publish child > devices and system resume can report success without a usable RSB > controller. >=20 > Return the timeout error, assert reset again, and disable the clock before > leaving the hardware-init path. >=20 > Signed-off-by: Pengpeng Hou Acked-by: Jernej Skrabec Best regards, Jernej