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2014-06-02drm/exynos/ipp: fix get_property IOCTLAndrzej Hajda
Due to incorrect assignment in EXYNOS_IPP_GET_PROPERTY IOCTL handler this IOCTL did not work at all. The patch fixes it. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Staticize local symbols in exynos_hdmi.cSachin Kamat
These symbols are local to this file. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Remove duplicate inclusion of i2c.hSachin Kamat
i2c.h was included twice. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Staticize exynos_dpi_of_find_panel_nodeSachin Kamat
exynos_dpi_of_find_panel_node is local to this file. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae>
2014-06-02drm/exynos: Fix PTN3460 dependencyJean Delvare
The following configuration options combination: CONFIG_DRM_EXYNOS_DP=y CONFIG_DRM_PTN3460=m currently leads to the following linker failure: drivers/built-in.o: In function `exynos_drm_attach_lcd_bridge': .../drivers/gpu/drm/exynos/exynos_dp_core.c:1004: undefined reference to `ptn3460_init' This is because ptn3460_init can't be implemented in a module while its caller is built into the kernel. So add the proper dependency in Kconfig so that the above can't happen. I moved DRM_PTN3460 earlier in Kconfig, next to the I2C helper module section, so that the user has a chance to select it before moving to the Exynos-specific section. IMHO the proper way to solve the problem would be to turn ptn3460 into a clean I2C driver, similar to the other I2C helper chip drivers. It's the only way to not sink into impossible-to-guess dependencies. Then ptn3460 could even be moved together with the other I2C helper chip drivers. Signed-off-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: use 4WORD dma burst length for small fbsRahul Sharma
In case of exynos, setting dma-burst to 16Word causes permanent tearing for very small buffers, e.g. cursor buffer. Burst Mode switching, which is based on overlay size is not recommended as overlay size varies a lot towards the end of the screen. This causes unstable DMA which results into tearing again. Rendering small buffers with lower burst size doesn't cause any noticable performance overhead. 128 pixel width is selected based on mulitple experiments with exynos5 SoCs. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Prathyush K <prathyush.k@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: use regmap interface to set hdmiphy control bit in pmuRahul Sharma
Exynos drm hdmi driver used to get dummy hdmiphy clock to control the PMU bit for hdmiphy. This bit needs to be set before setting any resolution to hdmi hardware. This was handled using dummy hdmiphy clock which is removed here. PMU is already defined as system controller for exynos SoCs. Hdmi driver is modified to control the phy enable bit inside PMU using regmap interfaces. Devicetree binding document for hdmi is also updated. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: allocate non-contigous buffers when iommu is enabledRahul Sharma
Allow to allocate non-contigous buffers when iommu is enabled. Currently, it tries to allocates contigous buffer which consistently fail for large buffers and then fall back to non contigous. Apart from being slow, this implementation is also very noisy and fills the screen with alloc fail logs. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Reviewed-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: hdmi: consider legacy dt bindingInki Dae
This patch considers legacy dt binding, and resolves the issue that the use of existing dtb is broken. To resove the dt broken issue, this path tries to get legacy dt nodes from existing dtb directly prior to getting new dt nodes. Signed-off-by: Inki Dae <inki.dae@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02drm/exynos: restore core HDMI settingsShirish S
In DVI mode the video preamble and Guard band should be disabled whereas it should be applied in HDMI mode, the re-applying of preamble and guard band was missing, which resulted in display failures when switched to HDMI mode from DVI mode. This patch ensures the setting is applied in HDMI mode. Signed-off-by: Shirish S <s.shirish@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: hdmi: remove unnecessary dedicated i2c driversSeung-Woo Kim
The i2c drivers for ddc and hdmiphy are already removed from build and instead, i2c clients registered via devicetree are used. So this patch removes the unnecessary i2c drivers. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: enable support for exynos5420 hdmi deviceRahul Sharma
Enable support for hdmi for exynos5420 hdmiphy. Add compatible string in the of_match table. Also added hdmiphy configuration values for exynos5420. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Shirish S <s.shirish@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: add support for apb mapped phys in hdmi driverRahul Sharma
Previous SoCs have hdmi phys which are accessible through dedicated i2c lines. Newer SoCs have Apb mapped hdmi phys. Hdmi driver is modified to support apb mapped phys. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: remove unnecessary read for phy configuration valuesRahul Sharma
Cleaning up unnecessary i2c read call after hdmiphy configuration. This check is redundant since check for hdmiphy pll lock status confirms the correct settings for phy. Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: replace hdmi reset with hdmi disableRahul Sharma
Before setting the core and timing generation registers, hdmi driver resets the whole hdmi hardware, which also resets the audio related registers. Hdmi reset is replaced by hdmi disable which is called just before setting the core and timing registers. It also ensure that audio settings are not changed. Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Shirish S <s.shirish@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Read hpd gpio in is_connected callbackSean Paul
This patch adds a gpio read of hpd during the is_connected callback. This fixes the case where hdmi is off going into suspend and the cable is plugged in while suspended. In this case, the hpd interrupt does not fire and is_connected will return false. Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: hdmi: remove unnecessary memsetDaniel Kurtz
Our resources were just zalloc'ed as part of hdata. They are already 0. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: check for null pointers in error handlingPaul Taysom
Smatch error from arm build: drivers/gpu/drm/exynos/ exynos_hdmi.c:2374 hdmi_probe() error: potential NULL dereference 'hdata->hdmiphy_port'. Added check for hdata->hdmiphy_port that it is not NULL. Signed-off-by: Paul Taysom <taysom@chromium.org> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Debounce HDMI hotplug interruptsSean Paul
This patch debounces hotplug interrupts generated by the HDMI hotplug gpio. The reason this is needed is that we get multiple (5) interrupts every time a monitor is inserted which causes us to needlessly enable and disable the IP block. Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Don't reset hdmiphy on hdmi offSean Paul
This patch removes the hdmiphy reset in hdmi_poweroff. The hdmiphy reset was added to take advantage of exynos clockgating, doing it would gate the entire TV domain. Unfortunately, mixer is included in the TV domain and its vsync interrupts are stopped when TV is gated. Signed-off-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: Fix double locks at PM resumeTakashi Iwai
The recent commit [3ea87855: drm/helper: lock all around force mode restore] introduced drm_modeset_lock_all() in drm_helper_resume_force_mode() itself, while exynos driver takes this lock before calling it. Move the function call outside the lock for avoiding a deadlock. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: dp: Use DPCD defines of drm_dp_helper.hJingoo Han
Use DPCD defines of drm_dp_helper.h; thus, duplicated DPCD defines of exynos_dp_core.h can be removed. Also, DP_TEST_EDID_CHECKSUM define is added to drm_dp_helper.h. There is no functional change. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: update phy settings for RB resolutionsShirish S
This patch updates phy settings of the below mentioned pixel clocks in Exynos5250 and removes support for 88.75MHz, for it is not supported. 71 MHz - 1280x800@60Hz RB 73.25 MHz - 800x600@120Hz RB 115.5 MHz - 1024x768@120Hz RB 119 MHz - 1680x1050@60Hz RB Signed-off-by: Shirish S <s.shirish@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: dp: support hotplug detection via GPIOAndrew Bresticker
Certain bridge chips use a GPIO to indicate the cable status instead of the I_DP_HPD pin. This adds an optional device-tree property, "samsung,hpd-gpio", to the exynos-dp controller which indicates that the specified GPIO should be used for hotplug detection. The GPIO is then set up as an edge-triggered interrupt where the rising edge indicates hotplug-in and the falling edge indicates hotplug-out. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com> Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: dsi: remove unnecessary pm interfacesInki Dae
Exynos drm driver is a single driver so pm operation for kms drivers should be done by connector->dpms at top level driver. If kms driver has its own pm interfaces, single driver model would be broken so this patch removes unnecessary pm interfaces from dsi driver. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02drm/exynos: remove unnecessary runtime pm interfacesInki Dae
Exyno drm driver has no real hardware device, and runtime pm operation should be done by sub drivers. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02drm/exynos: separate dpi from fimdAndrzej Hajda
The patch separates dpi related routines from fimd. Changelog v2: - Rename ctx->dpi to ctx->display Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: fix comment to exynos_drm_device_subdrv_prove callInki Dae
subdrv_probe callback of virtual display driver will be called by exynos_drm_device_subdrv_probe() to create crtc and encoder/connector for virtual display driver. So it fixes comments to exynos_drm_device_subdrv probe call. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02drm/exynos: dpi: fix hotplug fail issueInki Dae
When connector is created, if connector->polled is DRM_CONNECTOR_POLL_CONNECT then drm_kms_helper_hotplug_event function isn't called at drm_helper_hpd_irq_event because the function will be called only in case of DRM_CONNECTOR_POLL_HPD. So this patch sets always DRM_CONNECTOR_POLL_HPD flag to connector->polled of parallel panel driver at connector creation. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2014-06-02drm/exynos: add component framework supportInki Dae
This patch adds component framework support to resolve the probe order issue. Until now, exynos drm had used codes specific to exynos drm to resolve that issue so with this patch, the specific codes are removed. Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: modify goto labels to meaningful namesInki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: fimd: clear channel before enabling iommuAkshu Agrawal
If any fimd channel was already active, initializing iommu will result in a PAGE FAULT (e.e. u-boot could have turned on the display and not disabled it before the kernel starts). This patch checks if any channel is active before initializing iommu and disables it. Signed-off-by: Akshu Agrawal <akshu.a@samsung.com> Signed-off-by: Prathyush K <prathyush.k@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: rotator: add missing bracesJingoo Han
In the case of that only one branch of a conditional statement is a single statement, braces are added to both branches. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: dp: remove unnecessary OOM messagesJingoo Han
The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: hdmi: make local symbols staticJingoo Han
Make local symbols static, because these are used only in this file. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: fb: make local symbol staticJingoo Han
Make local symbole static, because this is used only in this file. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos: remove DRIVER_HAVE_IRQ featureJoonyoung Shim
Exynos drm driver cannot support DRIVER_HAVE_IRQ feature because it uses driver specific one instead of routine of drm framework to install/uninstall irq handler. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos/fbdev: don't set mode_config.fb_baseDaniel Kurtz
AFAICT, the fb_base of a drm_device's mode_config is never used. It isn't accessed by core drm, it isn't used by fbmem, and it isn't exposed to user space. Furthermore, it is probably supposed to be a physical address, not the dma address mapped to the display controller, so this is just wrong. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-02drm/exynos/fbdev: don't set fix.smem/mmio_{start,len}Daniel Kurtz
Kernel access to the eyxnos fbdev framebuffer is via its gem object's kernel mapping (kvaddr, stored in info->screen_base). User space access is provided by mmap(), read() and write() of /dev/fb/fb0. These functions also only use screen_base/screen_size(). Therefore, it is not necessary to set fix->smem_{start,len} or fix->mmio_{start,len} fields. This avoids leaking kernel, physical and dma mapped addresses to user space via the ioctls FBIOGET_VSCREENINFO and FBIOGET_FSCREENINFO. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2014-06-01dmaengine: s3c24xx-dma: Add cyclic transfer supportVasily Khoruzhick
Many audio interface drivers require support of cyclic transfers to work correctly, for example Samsung ASoC DMA driver. This patch adds support for cyclic transfers to the s3c24xx-dma driver Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01dmaengine: s3c24xx-dma: Process whole SG chainVasily Khoruzhick
Due to redundant 'break' in loop driver processed only first chunk. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01dmaengine: imx: correct sdmac->status for cyclic dma txJiada Wang
In cyclic dma tx's handler sdma_handle_channel_loop(), SDMA channel statue is set to either DMA_ERROR or DMA_IN_PROGRESS based on each period's status. This has the following issues: 1) If one period's status is BD_RROR, then channel status will be set to DMA_ERROR, but it will be overwritten to DMA_IN_PROGRESS if the following periods are OK. 2) DMA client may call sdma_control(DMA_TERMINATE_ALL) to stop the cyclic dma operation, sdma channel status will be set to DMA_ERROR, but if after this handler is called, then again the channel status will be overwritten to DMA_IN_PROGRESS. Then the following dmaengine_prep_dma_cyclic() will always fail, as channel status is DMA_IN_PROGRESS. As in cyclic dma tx, channel status will be initially set to DMA_IN_PROGRESS, driver only needs to change it to DMA_ERROR, when something wrong happens (one period status is wrong, or stoped by client explicitly). Signed-off-by: Jiada Wang <jiada_wang@mentor.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-06-01regulator: axp20x: Use regulator_map_voltage_ascend for LDO4Axel Lin
The voltages in axp20x_ldo4_data table are in ascendant order, so use regulator_map_voltage_ascend. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-01regulator: use of_property_read_{bool|u32}()Sergei Shtylyov
Use more compact of_property_read_{bool|u32}() calls instead of the of_{find|get}_property() calls in of_get_regulation_constraints() where possible (note that of_property_read_{bool|u32}() were already used to read some properties). Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-01spi/pxa2xx: fix runtime PM enabling orderAntonio Ospite
In commit 7dd62787334ac6e0e2a0ef3f20bb1936ac431b04 (spi/pxa2xx: Convert to core runtime PM) master->auto_runtime_pm was set to true. In this case pm_runtime_enable() must be called *before* spi_register_master(), otherwise the kernel hangs with this error message: spi_master spi0: Failed to power device: -13 A similar fix, but for spi/hspi, was applied in 268d76430d1b68c340687357ffd18b4b12d02269. Signed-off-by: Antonio Ospite <ao2@ao2.it> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-01ACPI: Fix x86 regression related to early mapping size limitationLv Zheng
The following warning message is triggered: WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:136 __early_ioremap+0x11f/0x1f2() Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 3.15.0-rc1-00017-g86dfc6f3-dirty #298 Hardware name: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x036.091920111209 09/19/2011 0000000000000009 ffffffff81b75c40 ffffffff817c627b 0000000000000000 ffffffff81b75c78 ffffffff81067b5d 000000000000007b 8000000000000563 00000000b96b20dc 0000000000000001 ffffffffff300e0c ffffffff81b75c88 Call Trace: [<ffffffff817c627b>] dump_stack+0x45/0x56 [<ffffffff81067b5d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff81067c3a>] warn_slowpath_null+0x1a/0x20 [<ffffffff81d4b9d5>] __early_ioremap+0x11f/0x1f2 [<ffffffff81d4bc5b>] early_ioremap+0x13/0x15 [<ffffffff81d2b8f3>] __acpi_map_table+0x13/0x18 [<ffffffff817b8d1a>] acpi_os_map_memory+0x26/0x14e [<ffffffff813ff018>] acpi_tb_acquire_table+0x42/0x70 [<ffffffff813ff086>] acpi_tb_validate_table+0x27/0x37 [<ffffffff813ff0e5>] acpi_tb_verify_table+0x22/0xd8 [<ffffffff813ff6a8>] acpi_tb_install_non_fixed_table+0x60/0x1c9 [<ffffffff81d61024>] acpi_tb_parse_root_table+0x218/0x26a [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d610cd>] acpi_initialize_tables+0x57/0x59 [<ffffffff81d5f25d>] acpi_table_init+0x1b/0x99 [<ffffffff81d2bca0>] acpi_boot_table_init+0x1e/0x85 [<ffffffff81d23043>] setup_arch+0x99d/0xcc6 [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d1bbbe>] start_kernel+0x8b/0x415 [<ffffffff81d1b120>] ? early_idt_handlers+0x120/0x120 [<ffffffff81d1b5ee>] x86_64_start_reservations+0x2a/0x2c [<ffffffff81d1b72e>] x86_64_start_kernel+0x13e/0x14d ---[ end trace 11ae599a1898f4e7 ]--- when installing the following table during early stage: ACPI: SSDT 0x00000000B9638018 07A0C4 (v02 INTEL S2600CP 00004000 INTL 20100331) The regression is caused by the size limitation of the x86 early IO mapping. The root cause is: 1. ACPICA doesn't split IO memory mapping and table mapping; 2. Linux x86 OSL implements acpi_os_map_memory() using a size limited fix-map mechanism during early boot stage, which is more suitable for only IO mappings. This patch fixes this issue by utilizing acpi_gbl_verify_table_checksum to disable the table mapping during early stage and enabling it again for the late stage. In this way, the normal code path is not affected. Then after the code related to the root cause is cleaned up, the early checksum verification can be easily re-enabled. A new boot parameter - acpi_force_table_verification is introduced for the platforms that require the checksum verification to stop loading bad tables. This fix also covers the checksum verification for the table overrides. Now large tables can also be overridden using the initrd override mechanism. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Reported-and-tested-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-06-01ACPICA: Tables: Add mechanism to control early table checksum verification.Lv Zheng
It is reported that Linux x86 kernel cannot map large tables. The following large SSDT table on such platform fails to pass checksum verification and cannot be installed: ACPI: SSDT 0x00000000B9638018 07A0C4 (v02 INTEL S2600CP 00004000 INTL 20100331) It sounds strange that in the 64-bit virtual memory address space, we cannot map a single ACPI table to do checksum verification. The root cause is: 1. ACPICA doesn't split IO memory mapping and table mapping; 2. Linux x86 OSL implements acpi_os_map_memory() using a size limited fix-map mechanism during early boot stage, which is more suitable for only IO mappings. ACPICA originally only mapped table header for signature validation, and this header mapping is required by OSL override mechanism. There was no checksum verification because we could not map the whole table using this OSL. While the following ACPICA commit enforces checksum verification by mapping the whole table during Linux boot stage and it finally triggers this issue on some platforms: Commit: 86dfc6f339886559d80ee0d4bd20fe5ee90450f0 Subject: ACPICA: Tables: Fix table checksums verification before installation. Before doing further cleanups for the OSL table mapping and override implementation, this patch introduces an option for such OSPMs to temporarily discard the checksum verification feature. It then can be re-enabled easily when the ACPICA and the underlying OSL is ready. This patch also deletes a comment around the limitation of mappings because it is not correct. The limitation is not how many times we can map in the early stage, but the OSL mapping facility may not be suitable for mapping the ACPI tables and thus may complain us the size limitation. The acpi_tb_verify_table() is renamed to acpi_tb_verify_temp_table() due to the work around added, it now only applies to the table descriptor that hasn't been installed and cannot be used in other cases. Lv Zheng. Tested-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-31staging: lustre: fix integer as NULL pointer warningsAlexandr Terekhov
Fix several sparse warnings "Using plain integer as NULL pointer" Signed-off-by: Alexandr Terekhov <a.terekhov@gmail.com> drivers/staging/lustre/lustre/ldlm/ldlm_resource.c | 4 ++-- drivers/staging/lustre/lustre/obdclass/obd_mount.c | 4 ++-- drivers/staging/lustre/lustre/obdecho/lproc_echo.c | 4 ++-- drivers/staging/lustre/lustre/osc/osc_dev.c | 2 +- drivers/staging/lustre/lustre/ptlrpc/import.c | 2 +- 5 files changed, 8 insertions(+), 8 deletions(-) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-31Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm fixes from Dave Airlie: "Mostly quiet now: i915: fixing userspace visiblie issues, all stable marked radeon: one more pll fix, two crashers, one suspend/resume regression" * 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: drm/radeon: Resume fbcon last drm/radeon: only allocate necessary size for vm bo list drm/radeon: don't allow RADEON_GEM_DOMAIN_CPU for command submission drm/radeon: avoid crash if VM command submission isn't available drm/radeon: lower the ref * post PLL maximum once more drm/i915: Prevent negative relocation deltas from wrapping drm/i915: Only copy back the modified fields to userspace from execbuffer drm/i915: Fix dynamic allocation of physical handles
2014-05-30Merge tag 'samsung-drivers-2' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers Merge "Samsung 2nd drivers for 3.16" from Kukjin Kim: This is including fix exynos cpufreq driver compilation with ARCH_MULTIPLATFORM. Even though this is a work around, this is required for support exynos multiplatform for a while and will be updated in near future. This is based on tags/samsung-exynos. * tag 'samsung-drivers-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: (24 commits) cpufreq: exynos: Fix driver compilation with ARCH_MULTIPLATFORM ARM: EXYNOS: Enable multi-platform build support ARM: EXYNOS: Consolidate Kconfig entries ARM: EXYNOS: Add support for EXYNOS5410 SoC ARM: EXYNOS: Support secondary CPU boot of Exynos3250 ARM: EXYNOS: Add Exynos3250 SoC ID ARM: EXYNOS: Add 5800 SoC support ARM: EXYNOS: initial board support for exynos5260 SoC clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks cpufreq: exynos: Fix the compile error ARM: S3C24XX: move debug-macro.S into the common space ARM: S3C24XX: use generic DEBUG_UART_PHY/_VIRT in debug macro ARM: S3C24XX: trim down debug uart handling ARM: compressed/head.S: remove s3c24xx special case ARM: EXYNOS: Remove unnecessary inclusion of cpu.h ARM: EXYNOS: Migrate Exynos specific macros from plat to mach ARM: EXYNOS: Remove exynos_subsys registration ARM: EXYNOS: Remove duplicate lines in Makefile ARM: EXYNOS: use v7_exit_coherency_flush macro for cache disabling ARM: dts: Remove g2d_pd node for exynos5420 ... Signed-off-by: Olof Johansson <olof@lixom.net>