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Sat, 14 Nov 2020 21:51:00 -0800 (PST) Received: from rocinante ([95.155.85.46]) by smtp.gmail.com with ESMTPSA id g11sm17547121wrq.7.2020.11.14.21.50.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 14 Nov 2020 21:50:59 -0800 (PST) Date: Sun, 15 Nov 2020 06:50:57 +0100 From: Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= To: Florian Fainelli Subject: Re: [PATCH v4] PCI: Unify ECAM constants in native PCI Express drivers Message-ID: References: <20201005003805.465057-1-kw@linux.com> <429099a8-5186-40c3-f5c0-f219b3e79f01@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <429099a8-5186-40c3-f5c0-f219b3e79f01@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201115_005102_795711_5516DF8F X-CRM114-Status: GOOD ( 15.82 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Heiko Stuebner , Benjamin Herrenschmidt , Shawn Lin , Paul Mackerras , Thomas Petazzoni , Jonathan Chocron , Toan Le , Will Deacon , Rob Herring , Lorenzo Pieralisi , Michael Ellerman , Michal Simek , linux-rockchip@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, Jonathan Derrick , linux-pci@vger.kernel.org, Ray Jui , linux-rpi-kernel@lists.infradead.org, Jonathan Cameron , Bjorn Helgaas , linux-arm-kernel@lists.infradead.org, Scott Branden , Zhou Wang , Robert Richter , linuxppc-dev@lists.ozlabs.org, Nicolas Saenz Julienne Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Archived-At: List-Archive: On 20-10-04 19:53:06, Florian Fainelli wrote: Hi Florian, Sorry for taking a long time to get back to you. [...] > This appears to be correct, so: > > Acked-by: Florian Fainelli Thank you! > however, I would have defined a couple of additional helper macros and do: > > idx = PCIE_ECAM_BUS(bus->number) | PCIE_ECAM_DEV(devfn) | > PCIE_ECAM_FUN(devfn); > > for clarity. > [...] > For instance, adding these two: > > #define PCIE_ECAM_DEV(x) (((x) & 0x1f) << PCIE_ECAM_DEV_SHIFT) > #define PCIE_ECAM_FUN(x) (((x) & 0x7) << PCIE_ECAM_FUN_SHIFT) > > may be clearer for use in drivers like pcie-brcmstb.c that used to treat the > device function in terms of device and function (though it was called slot > there). Regarding the suggestion above - it has been like that initially, albeit Bjorn suggested that there is no need to reply on the macros that use PCI_SLOT() and PCI_FUNC() macros, see: https://lore.kernel.org/linux-pci/20200922232715.GA2238688@bjorn-Precision-5520/ I would be happy to put the macros back if there is a value in having the extra macros added - perhaps for clarify, as you suggest. Krzysztof _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip