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Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:51802) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lPmhI-0005jS-19; Fri, 26 Mar 2021 13:40:20 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1lPmhH-0007AV-QZ; Fri, 26 Mar 2021 13:40:19 +0000 Date: Fri, 26 Mar 2021 13:40:19 +0000 From: Russell King - ARM Linux admin To: Arnd Bergmann Cc: Linux ARM , Rob Herring Subject: Re: [PATCH 3/3] ARM: footbridge: restore allocation of CSR I/O resource Message-ID: <20210326134019.GS1463@shell.armlinux.org.uk> References: <20210326121735.GQ1463@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210326_134020_503379_65465A08 X-CRM114-Status: GOOD ( 15.38 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 26, 2021 at 02:37:39PM +0100, Arnd Bergmann wrote: > On Fri, Mar 26, 2021 at 1:18 PM Russell King wrote: > > > > Commit 8ef6e6201b2 ("ARM: footbridge: use fixed PCI i/o mapping") made > > two changes: it contains what it says in the summary line, but it also > > removes the CSR I/O allocation, which effectively means the DC21285 > > responds to I/O accesses at address 0..0x7f, which overlap Southbridge > > ISA resources on the same PCI bus. > > > > This commit fixes it, but depends on the previous two commits removing > > the bus level PCI I/O resource: > > ARM: footbridge: avoid using separate PCI I/O bus resource > > ARM: pci: make bus I/O resources optional > > > > Fixes: 8ef6e6201b2 ("ARM: footbridge: use fixed PCI i/o mapping") > > Signed-off-by: Russell King > > Reviewed-by: Arnd Bergmann > > This fix is needed regardless of which way the first patch fixes the > bus resource. This fix is dependent on the first patch as I said above - otherwise the allocation will fail. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel