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[92.116.226.73]) by smtp.gmail.com with ESMTPSA id m2sm6284546wml.15.2021.10.28.07.19.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Oct 2021 07:19:50 -0700 (PDT) From: Lukas Bulwahn To: Russell King , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Sekhar Nori , Bartosz Golaszewski , Linus Walleij , Imre Kaloz , Krzysztof Halasa , Avi Fishman , Tomer Maimon , Tali Perry , Patrick Venture , Nancy Yuen , Benjamin Fair , Dinh Nguyen , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, openbmc@lists.ozlabs.org Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org, Lukas Bulwahn Subject: [PATCH 00/13] Kconfig symbol clean-up on ./arch/arm{64} Date: Thu, 28 Oct 2021 16:19:25 +0200 Message-Id: <20211028141938.3530-1-lukas.bulwahn@gmail.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211028_071953_120890_9ABC3655 X-CRM114-Status: GOOD ( 21.91 ) 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 Dear arm maintainers, The script ./scripts/checkkconfigsymbols.py warns on invalid references to Kconfig symbols (often: minor typos, name confusions or outdated references). This is a patch series addressing the issues reported by ./scripts/checkkconfigsymbols.py in the ./arch/arm{64}/ directories, quickly filtered down with: ./scripts/checkkconfigsymbols.py | grep "arch/arm" -B 1 -A 2 without considering kernel configs, i.e., after removing arch/arm{64}/configs in the working tree. It addresses some issues I considered to be "true positives"; so, issues that should be addressed and cleaned up. The patches on updating the comments might arguably be considered of lower value by itself, but as the other patches show, checkkconfigsymbols does detect some relevant issues in the kernel tree otherwise being unnoticed. So, it might be worth to clean up the kernel tree to have checkkconfigsymbols produce a rather short list of issues and then continuously follow and check what checkkconfigsymbols reports. Some work from checkkconfigsymbols on arch/arm/ is deferred; the other remaining issues that checkkconfigsymbols reports are (as far as I understand it now) "false positives", i.e., the tool misinterprets the actual content) or "intentional", e.g., they refer to historic configs for the purpose of documentation (e.g., in changelogs) or are in various kernel configs that are not continuously updated to match the current set of kernel configs. You can see below a grouped list of remaining reports. Each patch in this series can be discussed and applied individually if needed. They are sent in one patch series, as they all orginate from the investigation guided by the same tool and hence share similar topics and resolutions. Please pick this series of minor clean-up patches on ./arch/arm{64}/. It applies cleanly on next-20211027. Best regards, Lukas Remaining reports from ./scripts/checkkconfigsymbols.py pointing to files in ./arch/arm{64}/ (excluding configs), grouped by the rationale why it is not addressed in this patch series: - Reference in historic comment: ARM_NR_BANKS Referencing files: arch/arm/mach-exynos/exynos.c CPU Referencing files: arch/arm/lib/backtrace.S, arch/arm/lib/csumpartialcopyuser.S, arch/arm/mach-rpc/ecard-loader.S, arch/arm/mach-rpc/io-acorn.S, arch/arm/nwfpe/fpmodule.h CPU_ARM92{0,2,5,6}_CPU_IDLE Referencing files: arch/arm/mm/proc-arm92{0,2,5,6}.S KVM_INDIRECT_VECTORS Referencing files: arch/arm64/kvm/hyp/nvhe/host.S - Use of CONFIG_* environment variable beyond the definition in Kconfig scripts AS_DMB_ISHLD Referencing files: arch/arm64/include/asm/vdso/compat_barrier.h, arch/arm64/kernel/vdso32/Makefile CC_HAS_K_CONSTRAINT Referencing files: arch/arm64/Makefile, arch/arm64/include/asm/atomic_ll_sc.h SHELL Ignore CONFIG_SHELL. Default variable in Kbuild build system. - Parsing Mistake (Incomplete parsing heuristics) by checkkconfigsymbols.py: ASC1, ASC2, SBC, UART Referencing files: arch/arm/Kconfig.debug - Future work to send clean-up patches: IRDA{_MODULE} Referencing files: arch/arm/mach-pxa/balloon3.c, arch/arm/mach-pxa/palm27x.c, arch/arm/mach-pxa/palm27x.h, arch/arm/mach-pxa/palmtc.c, include/linux/atalk.h, include/linux/netdevice.h PXA_FICP{_MODULE} Referencing files: arch/arm/mach-pxa/spitz.c DEBUG_LL_SER3 Referencing files: arch/arm/boot/compressed/head.S already discussed in 2014: https://lore.kernel.org/all/1400055127.31197.1.camel@x220/ Lukas Bulwahn (13): arm: debug: remove obsolete debug code for DEBUG_ZTE_ZX arm: debug: reuse the config DEBUG_OMAP2UART{1,2} for OMAP{3,4,5} arm: Kconfig.debug: drop reference to removed ARCH_MSM arm: drop an obsolete ifdef with the removed config PCI_HOST_ITE8152 arm: davinci: remove reference to obsolete BLK_DEV_PALMCHIP_BK3710 arm: ixp4xx: remove dead configs CPU_IXP43X and CPU_IXP46X arm: imx: remove dead left-over from i.MX{27,31,35} removal arm: imx: rename DEBUG_IMX21_IMX27_UART to DEBUG_IMX27_UART arm: milbeaut: remove select of non-existing PINCTRL_MILBEAUT arm: nomadik: drop selecting obsolete CLKSRC_NOMADIK_MTU_SCHED_CLOCK arm: npcm: drop selecting non-existing ARM_ERRATA_794072 arm: socfpga: always select PL310_ERRATA_753970 arm: pgtable: refer to intended CONFIG_ARM_LPAE in comment arch/arm/Kconfig.debug | 28 ++++++++++------------- arch/arm/include/debug/imx-uart.h | 18 +++++++-------- arch/arm/include/debug/pl01x.S | 7 ------ arch/arm/kernel/bios32.c | 2 -- arch/arm/mach-davinci/board-dm644x-evm.c | 3 +-- arch/arm/mach-davinci/board-dm646x-evm.c | 3 +-- arch/arm/mach-davinci/board-neuros-osd2.c | 3 +-- arch/arm/mach-imx/Kconfig | 12 ---------- arch/arm/mach-imx/Makefile | 2 -- arch/arm/mach-ixp4xx/Kconfig | 13 ----------- arch/arm/mach-milbeaut/Kconfig | 1 - arch/arm/mach-nomadik/Kconfig | 1 - arch/arm/mach-npcm/Kconfig | 1 - arch/arm/mach-socfpga/Kconfig | 2 +- arch/arm/mm/pgd.c | 2 +- 15 files changed, 26 insertions(+), 72 deletions(-)