Re: [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb
On Wed, 8 Jan 2020 at 09:16, Will Deacon wrote: > On Thu, Dec 26, 2019 at 02:17:06PM -0800, Bjorn Andersson wrote: > > These patches implements the stream mapping inheritance that's necessary > in > > order to not hit a security violation as the display hardware looses its > stream > > mapping during initialization of arm-smmu in various Qualcomm platforms. > > > > This was previously posted as an RFC [1], changes since then involves the > > rebase and migration of the read-back code to the Qualcomm specific > > implementation, the mapping is maintained indefinitely - to handle probe > > deferring clients - and rewritten commit messages. > > I don't think we should solve this in a Qualcomm-specific manner. Please > can > you take a look at the proposal from Thierry [1] and see whether or not it > works for you? > Did this or Thierry's solution ever gain traction? Or are all the parties still 'solving' this downstream? > Thanks, > > Will > > [1] > https://lore.kernel.org/lkml/20191209150748.2471814-1-thierry.red...@gmail.com > -- Lee Jones [李琼斯] Linaro Services Senior Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH v3] of_device: removed #include that caused a recursion in included headers
On Mon, 20 Apr 2020, Hadar Gat wrote: > Both of_platform.h and of_device.h were included each other. > In of_device.h, removed unneeded #include to of_platform.h > and added include to of_platform.h in the files that needs it. > > Signed-off-by: Hadar Gat > Reported-by: kbuild test robot > Acked-by: Jonathan Cameron #for-iio > Acked-by: Stephen Boyd # clk > --- > v3: add include to of_platform.h in more files. (reported due other builds) > v2: add include to of_platform.h in more files. (reported due other builds) > > arch/sparc/kernel/pci.c | 1 + > arch/sparc/kernel/pci_sabre.c | 1 + > arch/sparc/kernel/pci_schizo.c| 1 + > arch/sparc/kernel/sbus.c | 1 + > arch/sparc/mm/io-unit.c | 1 + > arch/sparc/mm/iommu.c | 1 + > drivers/base/platform.c | 1 + > drivers/bus/imx-weim.c| 1 + > drivers/bus/vexpress-config.c | 1 + > drivers/clk/mediatek/clk-mt7622-aud.c | 1 + > drivers/dma/at_hdmac.c| 1 + > drivers/dma/stm32-dmamux.c| 1 + > drivers/dma/ti/dma-crossbar.c | 1 + > drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 1 + > drivers/gpu/drm/msm/hdmi/hdmi.c | 1 + > drivers/gpu/drm/msm/msm_drv.c | 1 + > drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 1 + > drivers/gpu/drm/sun4i/sun4i_tcon.c| 1 + > drivers/iio/adc/stm32-adc-core.c | 1 + > drivers/iio/adc/stm32-dfsdm-adc.c | 1 + > drivers/iio/adc/stm32-dfsdm-core.c| 1 + > drivers/iommu/tegra-smmu.c| 1 + > drivers/media/platform/coda/coda-common.c | 1 + > drivers/memory/atmel-ebi.c| 1 + > drivers/mfd/palmas.c | 1 + > drivers/mfd/ssbi.c| 1 + Acked-by: Lee Jones > drivers/mtd/nand/raw/omap2.c | 1 + > drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 1 + > drivers/net/ethernet/ti/cpsw.c| 1 + > drivers/phy/tegra/xusb.c | 1 + > drivers/pinctrl/freescale/pinctrl-imx1-core.c | 1 + > drivers/pinctrl/nomadik/pinctrl-nomadik.c | 1 + > drivers/soc/samsung/exynos-pmu.c | 1 + > drivers/soc/sunxi/sunxi_sram.c| 1 + > include/linux/of_device.h | 2 -- > lib/genalloc.c| 1 + > 36 files changed, 35 insertions(+), 2 deletions(-) -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 06/12] dma-mapping: improve selection of dma_declare_coherent availability
On Mon, 11 Feb 2019, Christoph Hellwig wrote: > This API is primarily used through DT entries, but two architectures > and two drivers call it directly. So instead of selecting the config > symbol for random architectures pull it in implicitly for the actual > users. Also rename the Kconfig option to describe the feature better. > > Signed-off-by: Christoph Hellwig > --- > arch/arc/Kconfig| 1 - > arch/arm/Kconfig| 2 +- > arch/arm64/Kconfig | 1 - > arch/csky/Kconfig | 1 - > arch/mips/Kconfig | 1 - > arch/riscv/Kconfig | 1 - > arch/sh/Kconfig | 2 +- > arch/unicore32/Kconfig | 1 - > arch/x86/Kconfig| 1 - > drivers/mfd/Kconfig | 2 ++ If everyone else is happy with these changes, then so am I. Acked-by: Lee Jones > drivers/of/Kconfig | 3 ++- > include/linux/device.h | 2 +- > include/linux/dma-mapping.h | 8 > kernel/dma/Kconfig | 2 +- > kernel/dma/Makefile | 2 +- > 15 files changed, 13 insertions(+), 17 deletions(-) -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 01/12] mfd/sm501: depend on HAS_DMA
On Mon, 11 Feb 2019, Christoph Hellwig wrote: > Currently the sm501 mfd driver can be compiled without any dependencies, > but through the use of dma_declare_coherent it really depends on > having DMA and iomem support. Normally we don't explicitly require DMA > support as we have stubs for it if on UML, but in this case the driver > selects support for dma_declare_coherent and thus also requires > memmap support. Guard this by an explicit dependency. > > Signed-off-by: Christoph Hellwig > --- > drivers/mfd/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index f461460a2aeb..f15f6489803d 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1066,6 +1066,7 @@ config MFD_SI476X_CORE > > config MFD_SM501 > tristate "Silicon Motion SM501" > + depends on HAS_DMA >---help--- > This is the core driver for the Silicon Motion SM501 multimedia > companion chip. This device is a multifunction device which may I would normally have taken this, but I fear it will conflict with [PATCH 06/12]. For that reason, just take my: Acked-by: Lee Jones -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
