From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 71606342146; Sat, 28 Feb 2026 17:58:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301498; cv=none; b=hu9AezhIsUpO5iwldb6VdkAirplNWGr8CUK49JZLnePHAfHGd5yHtxs/FBJYHc9t8m+vGiCoXeMM9+Fi+NQ2E43l3UrZQkRkogmJK02CX1/0IAmqt6qvITo2VqizFOE+XVG9wKB2f2A2QrI1DcDhWGz24DfWxJKTpTwkazUl3kE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772301498; c=relaxed/simple; bh=Ssi4ys2hsnK4l5iOGPWzKxKmZumXDR9aWBZNhATU+mw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=noiXrnXuKdmHCuKlWIq9Lqn95Enql79CVD6Ks8qxmuCGKoZRvYDrmF1bIe3+qTvsZPXa76qwqmXZKnaYbK8GXuOhHEJ17EAN+K6lEtYYlOqyPWgEiNF2310HoKCwp283/5FyIcDgw8Av2g3iRc9JC9LLrzbL0FAhBGzL/pDEQK0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tPFY7WiZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tPFY7WiZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AAE41C2BC87; Sat, 28 Feb 2026 17:58:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772301498; bh=Ssi4ys2hsnK4l5iOGPWzKxKmZumXDR9aWBZNhATU+mw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tPFY7WiZ5lGqN8uwFhAAhkV61ZfvllDWil6Fq4x55fSGlMZWk1u7dgWZjeZx1pNWg DajxJ4J8uVmBZF1/yAmsKwblOcwRO36Wg0NuwUDuj1N32C330BkeuSvfx4WsflO7yN SQnPLTcOgrWnq4tPxtS6iA4LMCMn4GqkueSZp91escgwfVhfsi9qQN7LOuIqefhXo4 6sHZhckKtPx3ZtKV7wSYl0hfGbYNjO1uQMf8oo7jDC+XwoA6UHQ1Whf7uu2r7YmZKj xfyfx7R0jITbwl86SGqXnH97PPREAbuEzKpmlCuJa/9Y2pD5O5S/BEEL2UOEyGgBza HmgmGUoIoyNOA== From: Sasha Levin To: patches@lists.linux.dev Cc: Jiaxun Yang , stable@vger.kernel.org, Waldemar Brodkorb , Thomas Bogendoerfer , Sasha Levin Subject: [PATCH 6.18 682/752] MIPS: rb532: Fix MMIO UART resource registration Date: Sat, 28 Feb 2026 12:46:33 -0500 Message-ID: <20260228174750.1542406-682-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228174750.1542406-1-sashal@kernel.org> References: <20260228174750.1542406-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Jiaxun Yang [ Upstream commit e93bb4b76cfefb302534246e892c7667491cb8cc ] Since commit 6e690d54cfa8 ("serial: 8250: fix return error code in serial8250_request_std_resource()"), registering an 8250 MMIO port without mapbase no longer works, as the resource range is derived from mapbase/mapsize. Populate mapbase and mapsize accordingly. Also drop ugly membase KSEG1 pointer and set UPF_IOREMAP instead, letting the 8250 core perform the ioremap. Fixes: 6e690d54cfa8 ("serial: 8250: fix return error code in serial8250_request_std_resource()") Cc: stable@vger.kernel.org Reported-by: Waldemar Brodkorb Link: https://lore.kernel.org/linux-mips/aX-d0ShTplHKZT33@waldemar-brodkorb.de/ Signed-off-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin --- arch/mips/rb532/devices.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c index b7f6f782d9a13..ffa4d38ca95df 100644 --- a/arch/mips/rb532/devices.c +++ b/arch/mips/rb532/devices.c @@ -212,11 +212,12 @@ static struct platform_device rb532_wdt = { static struct plat_serial8250_port rb532_uart_res[] = { { .type = PORT_16550A, - .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE), + .mapbase = REGBASE + UART0BASE, + .mapsize = 0x1000, .irq = UART0_IRQ, .regshift = 2, .iotype = UPIO_MEM, - .flags = UPF_BOOT_AUTOCONF, + .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP, }, { .flags = 0, -- 2.51.0