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* rtc: fsl-ftm-alarm: fix freeze(s2idle) failed to wakeRan Wang2020-06-061-1/+5
| | | | | | | | | Use dev_pm_set_wake_irq() instead of flag IRQF_NO_SUSPEND to enable wakeup system feature for both freeze(s2idle) and mem(deep). Signed-off-by: Ran Wang <ran.wang_1@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20200601071914.36444-1-ran.wang_1@nxp.com
* rtc: abx80x: Provide debug feedback for invalid dt propertiesKevin P. Fleming2020-06-061-6/+11
| | | | | | | | | | When the user provides an invalid value for tc-diode or tc-resistor generate a debug message instead of silently ignoring it. Signed-off-by: Kevin P. Fleming <kevin+linux@km6g.us> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20200530122956.360689-1-kevin+linux@km6g.us
* rtc: abx80x: Add Device Tree matching tableKevin P. Fleming2020-05-301-0/+49
| | | | | | | | | Enable automatic loading of the module when a Device Tree overlay specifies a device supported by this driver. Signed-off-by: Kevin P. Fleming <kevin+linux@km6g.us> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20200528114617.166587-1-kevin+linux@km6g.us
* rtc: rv3028: Add missed check for devm_regmap_init_i2c()Chuhong Yuan2020-05-301-0/+2
| | | | | | | | | | rv3028_probe() misses a check for devm_regmap_init_i2c(). Add the missed check to fix it. Fixes: e6e7376cfd7b ("rtc: rv3028: add new driver") Signed-off-by: Chuhong Yuan <hslester96@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20200528103950.912353-1-hslester96@gmail.com
* rtc: mpc5121: Use correct return value for mpc5121_rtc_probe()Tiezhu Yang2020-05-301-1/+1
| | | | | | | | | When call function devm_platform_ioremap_resource(), we should use IS_ERR() to check the return value and return PTR_ERR() if failed. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1590370788-15136-2-git-send-email-yangtiezhu@loongson.cn
* rtc: goldfish: Use correct return value for goldfish_rtc_probe()Tiezhu Yang2020-05-301-1/+1
| | | | | | | | | When call function devm_platform_ioremap_resource(), we should use IS_ERR() to check the return value and return PTR_ERR() if failed. Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1590370788-15136-1-git-send-email-yangtiezhu@loongson.cn
* rtc: snvs: Add necessary clock operations for RTC APIsAnson Huang2020-05-301-2/+53
| | | | | | | | | | There could be still RTC registers access after RTC suspend with clock disabled, need to add clock operations for each RTC API to make sure accessing RTC registers is successfully. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1590113996-31845-2-git-send-email-Anson.Huang@nxp.com
* rtc: snvs: Make SNVS clock always preparedAnson Huang2020-05-301-2/+2
| | | | | | | | | | | | | In IRQ handler, ONLY clock enable/disable is called due to clock prepare can NOT be called in interrupt context, but clock enable/disable will return failure if prepare count is 0, to fix this issue, just make SNVS clock always prepared there, the SNVS clock has no prepare function implemented, so it won't impact anything. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1590113996-31845-1-git-send-email-Anson.Huang@nxp.com
* rtc: ingenic: Reset regulator register in probePaul Cercueil2020-05-111-0/+3
| | | | | | | | | | | | | The regulator register specifies how many input clock cycles (minus one) are contained in one tick of the 1 Hz clock. Since this register can contain bogus values after the system boots, it needs to be reset in the probe register, otherwise the RTC may count way to slow or way too fast. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-7-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Fix masking of error codePaul Cercueil2020-05-111-1/+1
| | | | | | | | | The code was returning -ENOENT on any error of platform_get_irq(), even if it returned a different error. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-6-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Remove unused fields from private structurePaul Cercueil2020-05-111-14/+12
| | | | | | | | | | The 'clk' and 'irq' fields were only ever used in the probe function. Therefore they can be moved to be simple local variables of the probe function. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-5-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Set wakeup params in probePaul Cercueil2020-05-111-51/+44
| | | | | | | | | We can write the wakeup timing parameters as soon as the driver probes, there's no need to wait the very last moment. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-4-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Enable clock in probePaul Cercueil2020-05-111-2/+17
| | | | | | | | | | It makes no sense to request a clock and not enable it even though the hardware is being used. So the driver now enables the clock in the probe. Besides, now we can properly handle errors. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-3-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Use local 'dev' variable in probePaul Cercueil2020-05-111-15/+15
| | | | | | | | | Clean a bit the probe function by adding a local struct device *dev variable. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-2-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: ingenic: Only support probing from devicetreePaul Cercueil2020-05-112-17/+4
| | | | | | | | | | With the recent work on supporting Device Tree on Ingenic SoCs, no driver ever probes from platform code anymore, so we can clean a bit this driver by removing the non-devicetree paths. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200505221336.222313-1-paul@crapouillou.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: mc13xxx: fix a double-unlock issueQiushi Wu2020-05-111-1/+3
| | | | | | | | | | | | | | In function mc13xxx_rtc_probe, the mc13xxx_unlock() is called before rtc_register_device(). But in the error path of rtc_register_device(), the mc13xxx_unlock() is called again, which causes a double-unlock problem. Thus add a call of the function “mc13xxx_lock” in an if branch for the completion of the exception handling. Fixes: e4ae7023e182a ("rtc: mc13xxx: set range") Signed-off-by: Qiushi Wu <wu000273@umn.edu> Link: https://lore.kernel.org/r/20200503182235.1652-1-wu000273@umn.edu Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: stmp3xxx: update contact emailWolfram Sang2020-05-111-1/+1
| | | | | | | | | The 'pengutronix' address is defunct for years. Use the proper contact address. Signed-off-by: Wolfram Sang <wsa@kernel.org> Link: https://lore.kernel.org/r/20200502142704.19308-1-wsa@kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: max77686: Use single-byte writes on MAX77620Thierry Reding2020-05-111-6/+16
| | | | | | | | | | | The MAX77620 doesn't support bulk writes, so make sure the regmap code breaks bulk writes into multiple single-byte writes. Signed-off-by: Thierry Reding <treding@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Link: https://lore.kernel.org/r/20200417170825.2551367-3-thierry.reding@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: pcf2127: report battery switch overAlexandre Belloni2020-05-111-4/+12
| | | | | | | | Add support for the RTC_VL_BACKUP_SWITCH flag to report battery switch over events. Link: https://lore.kernel.org/r/20200511140335.799133-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: pcf2127: set regmap max_registerAlexandre Belloni2020-05-111-0/+2
| | | | | | | Set regmap max_register to ease debugging and enforce the register range. Link: https://lore.kernel.org/r/20200505201310.255145-4-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: pcf2127: remove unnecessary #ifdefAlexandre Belloni2020-05-111-4/+0
| | | | | | | | There is not point in setting .ioctl to NULL when CONFIG_RTC_INTF_DEV is not defined because it would not be called anyway. Link: https://lore.kernel.org/r/20200505201310.255145-3-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: pcf2127: let the core handle rtc rangeAlexandre Belloni2020-05-111-3/+5
| | | | | | | Let the core handle offsetting and windowing the RTC range. Link: https://lore.kernel.org/r/20200505201310.255145-2-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: 88pm860x: remove useless range checkAlexandre Belloni2020-04-181-6/+0
| | | | | | | | Because the core is now checking the RTC range, it is unnecessary to check it again in .set_time/ Link: https://lore.kernel.org/r/20200415200226.157361-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: mt2712: switch to devm_platform_ioremap_resourceAlexandre Belloni2020-04-181-3/+1
| | | | | | | | | | | | Using devm_platform_ioremap_resource instead of open coding it reduces the size of the binary. text data bss dec hex filename 3728 216 0 3944 f68 drivers/rtc/rtc-mt2712.o 3744 216 0 3960 f78 drivers/rtc/rtc-mt2712.o.old Link: https://lore.kernel.org/r/20200415200021.157118-2-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: mt2712: remove unnecessary error stringAlexandre Belloni2020-04-181-7/+1
| | | | | | | | Remove the unnecessary error string as the core will already display error messages when registration fails (i.e. never). Link: https://lore.kernel.org/r/20200415200021.157118-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: rc5t619: Fix an ERR_PTR vs NULL checkDan Carpenter2020-04-151-3/+1
| | | | | | | | | | The devm_kzalloc() function returns NULL on error, it doesn't return error pointers so this check doesn't work. Fixes: 540d1e15393d ("rtc: rc5t619: Add Ricoh RC5T619 RTC driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200407092852.GI68494@mwanda Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* rtc: remove unnecessary error message after platform_get_irqMarkus Elfring2020-04-153-9/+3
| | | | | | | | | | | | | The function “platform_get_irq” can log an error already. Thus omit redundant messages for the exception handling in the calling functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Link: https://lore.kernel.org/r/04116352-b464-041c-1939-96440133aa6f@web.de Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
* Merge tag 'kbuild-v5.7-2' of ↵Linus Torvalds2020-04-112-8/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - raise minimum supported binutils version to 2.23 - remove old CONFIG_AS_* macros that we know binutils >= 2.23 supports - move remaining CONFIG_AS_* tests to Kconfig from Makefile - enable -Wtautological-compare warnings to catch more issues - do not support GCC plugins for GCC <= 4.7 - fix various breakages of 'make xconfig' - include the linker version used for linking the kernel into LINUX_COMPILER, which is used for the banner, and also exposed to /proc/version - link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y, which allows us to remove the lib-ksyms.o workaround, and to solve the last known issue of the LLVM linker - add dummy tools in scripts/dummy-tools/ to enable all compiler tests in Kconfig, which will be useful for distro maintainers - support the single switch, LLVM=1 to use Clang and all LLVM utilities instead of GCC and Binutils. - support LLVM_IAS=1 to enable the integrated assembler, which is still experimental * tag 'kbuild-v5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (36 commits) kbuild: fix comment about missing include guard detection kbuild: support LLVM=1 to switch the default tools to Clang/LLVM kbuild: replace AS=clang with LLVM_IAS=1 kbuild: add dummy toolchains to enable all cc-option etc. in Kconfig kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y MIPS: fw: arc: add __weak to prom_meminit and prom_free_prom_memory kbuild: remove -I$(srctree)/tools/include from scripts/Makefile kbuild: do not pass $(KBUILD_CFLAGS) to scripts/mkcompile_h Documentation/llvm: fix the name of llvm-size kbuild: mkcompile_h: Include $LD version in /proc/version kconfig: qconf: Fix a few alignment issues kconfig: qconf: remove some old bogus TODOs kconfig: qconf: fix support for the split view mode kconfig: qconf: fix the content of the main widget kconfig: qconf: Change title for the item window kconfig: qconf: clean deprecated warnings gcc-plugins: drop support for GCC <= 4.7 kbuild: Enable -Wtautological-compare x86: update AS_* macros to binutils >=2.23, supporting ADX and AVX2 crypto: x86 - clean up poly1305-x86_64-cryptogams.S by 'make clean' ...
| * drm/i915: remove always-defined CONFIG_AS_MOVNTDQAMasahiro Yamada2020-04-092-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_AS_MOVNTDQA was introduced by commit 0b1de5d58e19 ("drm/i915: Use SSE4.1 movntdqa to accelerate reads from WC memory"). We raise the minimal supported binutils version from time to time. The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum required binutils version to 2.21"). I confirmed the code in $(call as-instr,...) can be assembled by the binutils 2.21 assembler and also by LLVM integrated assembler. Remove CONFIG_AS_MOVNTDQA, which is always defined. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com>
* | Merge branch 'akpm' (patches from Andrew)Linus Torvalds2020-04-1016-24/+23
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merge yet more updates from Andrew Morton: - Almost all of the rest of MM (memcg, slab-generic, slab, pagealloc, gup, hugetlb, pagemap, memremap) - Various other things (hfs, ocfs2, kmod, misc, seqfile) * akpm: (34 commits) ipc/util.c: sysvipc_find_ipc() should increase position index kernel/gcov/fs.c: gcov_seq_next() should increase position index fs/seq_file.c: seq_read(): add info message about buggy .next functions drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warnings change email address for Pali Rohár selftests: kmod: test disabling module autoloading selftests: kmod: fix handling test numbers above 9 docs: admin-guide: document the kernel.modprobe sysctl fs/filesystems.c: downgrade user-reachable WARN_ONCE() to pr_warn_once() kmod: make request_module() return an error when autoloading is disabled mm/memremap: set caching mode for PCI P2PDMA memory to WC mm/memory_hotplug: add pgprot_t to mhp_params powerpc/mm: thread pgprot_t through create_section_mapping() x86/mm: introduce __set_memory_prot() x86/mm: thread pgprot_t through init_memory_mapping() mm/memory_hotplug: rename mhp_restrictions to mhp_params mm/memory_hotplug: drop the flags field from struct mhp_restrictions mm/special: create generic fallbacks for pte_special() and pte_mkspecial() mm/vma: introduce VM_ACCESS_FLAGS mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS ...
| * | drivers/dma/tegra20-apb-dma.c: fix platform_get_irq.cocci warningskbuild test robot2020-04-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove dev_err() messages after platform_get_irq*() failures. platform_get_irq() already prints an error. Generated by: scripts/coccinelle/api/platform_get_irq.cocci Fixes: 6c41ac96ad92 ("dmaengine: tegra-apb: Support COMPILE_TEST") Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Cc: Vinod Koul <vinod.koul@linux.intel.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Jon Hunter <jonathanh@nvidia.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2002271133450.2973@hadrien Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | change email address for Pali RohárPali Rohár2020-04-1014-22/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For security reasons I stopped using gmail account and kernel address is now up-to-date alias to my personal address. People periodically send me emails to address which they found in source code of drivers, so this change reflects state where people can contact me. [ Added .mailmap entry as per Joe Perches - Linus ] Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Joe Perches <joe@perches.com> Link: http://lkml.kernel.org/r/20200307104237.8199-1-pali@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | mm/vma: introduce VM_ACCESS_FLAGSAnshuman Khandual2020-04-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are many places where all basic VMA access flags (read, write, exec) are initialized or checked against as a group. One such example is during page fault. Existing vma_is_accessible() wrapper already creates the notion of VMA accessibility as a group access permissions. Hence lets just create VM_ACCESS_FLAGS (VM_READ|VM_WRITE|VM_EXEC) which will not only reduce code duplication but also extend the VMA accessibility concept in general. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Salter <msalter@redhat.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Springer <rspringer@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/1583391014-8170-3-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge tag 'for-linus-5.7-rc1b-tag' of ↵Linus Torvalds2020-04-1013-107/+125
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull more xen updates from Juergen Gross: - two cleanups - fix a boot regression introduced in this merge window - fix wrong use of memory allocation flags * tag 'for-linus-5.7-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: fix booting 32-bit pv guest x86/xen: make xen_pvmmu_arch_setup() static xen/blkfront: fix memory allocation flags in blkfront_setup_indirect() xen: Use evtchn_type_t as a type for event channels
| * | | xen/blkfront: fix memory allocation flags in blkfront_setup_indirect()Juergen Gross2020-04-071-5/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 1d5c76e664333 ("xen-blkfront: switch kcalloc to kvcalloc for large array allocation") didn't fix the issue it was meant to, as the flags for allocating the memory are GFP_NOIO, which will lead the memory allocation falling back to kmalloc(). So instead of GFP_NOIO use GFP_KERNEL and do all the memory allocation in blkfront_setup_indirect() in a memalloc_noio_{save,restore} section. Fixes: 1d5c76e664333 ("xen-blkfront: switch kcalloc to kvcalloc for large array allocation") Cc: stable@vger.kernel.org Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Link: https://lore.kernel.org/r/20200403090034.8753-1-jgross@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>
| * | | xen: Use evtchn_type_t as a type for event channelsYan Yankovskyi2020-04-0712-102/+113
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make event channel functions pass event channel port using evtchn_port_t type. It eliminates signed <-> unsigned conversion. Signed-off-by: Yan Yankovskyi <yyankovskyi@gmail.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20200323152343.GA28422@kbp1-lhp-F74019 Signed-off-by: Juergen Gross <jgross@suse.com>
* | | | Merge tag 'pwm/for-5.7-rc1' of ↵Linus Torvalds2020-04-1014-233/+518
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm Pull pwm updates from Thierry Reding: "There's quite a few changes this time around. Most of these are fixes and cleanups, but there's also new chip support for some drivers and a bit of rework" * tag 'pwm/for-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (33 commits) pwm: pca9685: Fix PWM/GPIO inter-operation pwm: Make pwm_apply_state_debug() static pwm: meson: Remove redundant assignment to variable fin_freq pwm: jz4740: Allow selection of PWM channels 0 and 1 pwm: jz4740: Obtain regmap from parent node pwm: jz4740: Improve algorithm of clock calculation pwm: jz4740: Use clocks from TCU driver pwm: sun4i: Remove redundant needs_delay pwm: omap-dmtimer: Implement .apply callback pwm: omap-dmtimer: Do not disable PWM before changing period/duty_cycle pwm: omap-dmtimer: Fix PWM enabling sequence pwm: omap-dmtimer: Update description for PWM OMAP DM timer pwm: omap-dmtimer: Drop unused header file pwm: renesas-tpu: Drop confusing registered message pwm: renesas-tpu: Fix late Runtime PM enablement pwm: rcar: Fix late Runtime PM enablement dt-bindings: pwm: renesas-tpu: Document more R-Car Gen2 support pwm: meson: Fix confusing indentation pwm: pca9685: Use gpio core provided macro GPIO_LINE_DIRECTION_OUT pwm: pca9685: Replace CONFIG_PM with __maybe_unused ...
| * | | | pwm: pca9685: Fix PWM/GPIO inter-operationSven Van Asbroeck2020-04-031-37/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This driver allows pwms to be requested as gpios via gpiolib. Obviously, it should not be allowed to request a GPIO when its corresponding PWM is already requested (and vice versa). So it requires some exclusion code. Given that the PWMm and GPIO cores are not synchronized with respect to each other, this exclusion code will also require proper synchronization. Such a mechanism was in place, but was inadvertently removed by Uwe's clean-up in commit e926b12c611c ("pwm: Clear chip_data in pwm_put()"). Upon revisiting the synchronization mechanism, we found that theoretically, it could allow two threads to successfully request conflicting PWMs/GPIOs. Replace with a bitmap which tracks PWMs in-use, plus a mutex. As long as PWM and GPIO's respective request/free functions modify the in-use bitmap while holding the mutex, proper synchronization will be guaranteed. Reported-by: YueHaibing <yuehaibing@huawei.com> Fixes: e926b12c611c ("pwm: Clear chip_data in pwm_put()") Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: YueHaibing <yuehaibing@huawei.com> Link: https://lkml.org/lkml/2019/5/31/963 Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> [cg: Tested on an i.MX6Q board with two NXP PCA9685 chips] Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com> Reviewed-by: Sven Van Asbroeck <TheSven73@gmail.com> # cg's rebase Link: https://lore.kernel.org/lkml/20200330160238.GD2817345@ulmo/ Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: Make pwm_apply_state_debug() staticJason Yan2020-04-031-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following gcc warning: drivers/pwm/core.c:467:6: warning: symbol 'pwm_apply_state_debug' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: meson: Remove redundant assignment to variable fin_freqColin Ian King2020-04-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The variable fin_freq is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Allow selection of PWM channels 0 and 1Paul Cercueil2020-03-301-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TCU channels 0 and 1 were previously reserved for system tasks, and thus unavailable for PWM. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Obtain regmap from parent nodePaul Cercueil2020-03-302-24/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TCU registers are shared between a handful of drivers, accessing them through the same regmap. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Improve algorithm of clock calculationPaul Cercueil2020-03-301-15/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The previous algorithm hardcoded details about how the TCU clocks work. The new algorithm will use clk_round_rate to find the perfect clock rate for the PWM channel. This code relies on the fact that clk_round_rate() will always round down, which is not a valid assumption given by the clk API, but only happens to be true with the clk drivers used for Ingenic SoCs. Right now, there is no alternative as the clk API does not have a round-down function (and won't have one for a while), but if it ever comes to light, a round-down function should be used instead. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: jz4740: Use clocks from TCU driverPaul Cercueil2020-03-302-14/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ingenic-timer "TCU" driver provides us with clocks, that can be (un)gated, reparented or reclocked from devicetree, instead of having these settings hardcoded in this driver. The new code now uses a clk pointer per PWM (instead of a clk per pwm-chip before). So the pointer is stored in per-pwm data now. The calls to arch-specific timer code is replaced with standard clock API calls to start and stop each channel's clock. While this driver is devicetree-compatible, it is never (as of now) probed from devicetree, so this change does not introduce a ABI problem with current devicetree files. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Tested-by: Mathieu Malaterre <malat@debian.org> Tested-by: Artur Rojek <contact@artur-rojek.eu> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: sun4i: Remove redundant needs_delayPascal Roeleven2020-03-301-11/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'needs_delay' does now always evaluate to true, so remove all occurrences. Signed-off-by: Pascal Roeleven <dev@pascalroeleven.nl> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Implement .apply callbackLokesh Vutla2020-03-301-51/+129
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement .apply callback and drop the legacy callbacks(enable, disable, config, set_polarity). In .apply() check for the current hardware status before changing the PWM configuration. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Do not disable PWM before changing period/duty_cycleLokesh Vutla2020-03-301-14/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only the Timer control register(TCLR) cannot be updated when the timer is running. Registers like Counter register (TCRR), loader register (TLDR) and match register (TMAR) can be updated while the counter is running. Since TCLR is not updated in pwm_omap_dmtimer_config(), do not stop the timer for period/duty_cycle update. Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Fix PWM enabling sequenceLokesh Vutla2020-03-301-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To configure DM timer in PWM mode the following needs to be set in OMAP_TIMER_CTRL_REG using set_pwm callback: - Set toggle mode on PORTIMERPWM output pin - Set trigger on overflow and match on PORTIMERPWM output pin. - Set auto reload This is a one time configuration and needs to be set before the start of the DM timer. But the current driver tries to set the same configuration for every period/duty cycle update, which is not needed. So move the PWM setup before enabling timer and do not update it in pwm_omap_dmtimer_config(). Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Update description for PWM OMAP DM timerLokesh Vutla2020-03-301-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the description with a brief about how PWM is generated using OMAP DM timer and add limitations for the PWM generations. Also add a link to the reference manual. Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
| * | | | pwm: omap-dmtimer: Drop unused header fileLokesh Vutla2020-03-301-11/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pwm_omap_dmtimer.h is used only: - to typedef struct omap_dm_timer to pwm_omap_dmtimer - for macro PWM_OMAP_DMTIMER_TRIGGER_OVERFLOW_AND_COMPARE Rest of the file is pretty mush unsed. So reuse omap_dm_timer and OMAP_TIMER_TRIGGER_OVERFLOW_AND_COMPARE in pwm-omap-dmtimer.c and delete the header file. Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-15 10:45:50 +0000