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2016-10-01drm/exynos/fimd: add clock rate checkingAndrzej Hajda1-11/+28
In case of some platforms fimd clocks can be configured to very low values, as a result refresh rate can be very low and driver/drm-core will timeout waiting for vblanks, it will result in premature removal of framebuffers and will cause oopses. The patch adds atomic_check callback to fimd to prevent setting such modes. Reported-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01drm/exynos: fix pending update handlingAndrzej Hajda3-60/+2
Exynos DRM devices update their registers at vblank time. Exynos-DRM uses custom mechanism to wait for vblank. This mechanism is error prone - variables are not updated atomically. As a result in certain circumstances user space can try to free buffers which are still in use by hardware, in such cases IOMMU can throw OOPS. The patch instead of fixing the mechanism replaces it with drm core helper. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01drm/exynos/vidi: use timer for vblanks instead of sleeping workerAndrzej Hajda1-46/+20
VIDI driver uses fake vblank handler to generate vblank events. It was implemented using worker which slept for vblank time, additionally it did not work if there were no page flips. The patch replaces it with timer, uses drm_crtc_vblank_(on|off) helpers to manage it and fixes behavior for non-page-flip cases. This change allows further improvements of vblank in exynos-drm framework. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01drm/exynos: g2d: beautify probing messageTobias Jakobi1-1/+1
Apply some 'make-up' in g2d_probe(). Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01drm/exynos: mixer: simplify loop in vp_win_reset()Tobias Jakobi1-2/+2
A simple while loop should do the same here. Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01drm/exynos: mixer: convert booleans to flags in mixer contextTobias Jakobi1-25/+30
The mixer context struct already has a 'flags' field, so we can use it to store the 'interlace', 'vp_enabled' and 'has_sclk' booleans. We use the non-atomic helper functions to access these bits. Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01gpu: drm: exynos_hdmi: Remove duplicate initialization of regulator bulk consumerMilo Kim1-3/+2
The helper, devm_regulator_bulk_get() initializes the consumer as NULL, so this code can be ignored. Signed-off-by: Milo Kim <woogyom.kim@gmail.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01gpu: drm: exynos_hdmi: Move PHY logic into single functionMilo Kim1-30/+33
Paring DT properties and getting PHY IO (memory mapped or I2C) in one function. Signed-off-by: Milo Kim <woogyom.kim@gmail.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-10-01gpu: drm: exynos_hdmi: Move DDC logic into single functionMilo Kim1-21/+25
Paring DT properties and getting the I2C adapter in one function. Signed-off-by: Milo Kim <woogyom.kim@gmail.com> Reviewed-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2016-09-28drm/radeon: always apply pci shutdown callbacksAlex Deucher1-3/+4
We can't properly detect all hypervisors and we need this to properly tear down the hardware. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: always apply pci shutdown callbacks (v2)Alex Deucher1-6/+4
We can't properly detect all hypervisors and we need this to properly tear down the hardware. v2: trivial warning fix Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: improve VM PTE trace pointsChristian König2-5/+25
Use a separate one for the copy operation and log all the interesting parameters. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: fix GART_DEBUGFS defineChristian König1-4/+4
Obviously missed during the rename. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: free userptrs even if GTT isn't boundChristian König1-3/+3
This fixes a memory leak since binding GTT only on demand. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amd/amdgpu: Various cleanups for DCEv6Tom St Denis1-36/+10
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: fix BO move offsetsChristian König1-2/+2
It's pretty pointless to get the offset first and then initialize it. Should fix issues with the new GTT manager. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: fix amdgpu_move_blit on 32bit systemsChristian König1-2/+2
This bug seems to be present for a very long time. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-09-28drm/amdgpu: fix gtt_mgr bo's offsetFlora Cui1-2/+3
Signed-off-by: Flora Cui <Flora.Cui@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: fix initializing the VM BO shadowChristian König1-0/+15
We need to clear the shadows as well. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: fix initializing the VM last eviction counterChristian König1-2/+6
Close a very small window where something can go wrong. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: cleanup VM shadow BO unreferencingChristian König1-6/+10
Unreference the shadow BOs in the error path as well and drop the NULL checks. Signed-off-by: Christian König <christian.koenig@amd.com> Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: allocate GTT space for shadow VM page tablesChristian König1-0/+17
We need to access those with the system domain. Fixes fallout from only allocating GTT space on demand. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: rename all rbo variable to abo v2Christian König12-159/+159
Just to cleanup some radeon leftovers. sed -i "s/rbo/abo/g" drivers/gpu/drm/amd/amdgpu/*.c sed -i "s/rbo/abo/g" drivers/gpu/drm/amd/amdgpu/*.h v2: rebased Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: remove unused member from struct amdgpu_boChristian König2-3/+0
Not used in a while. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu: add a custom GTT memory manager v2Christian König6-11/+265
Only allocate address space when we really need it. v2: fix a typo, add correct function description, stop leaking the node in the error case. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu/dce6: disable hpd on local panelsAlex Deucher1-9/+39
Otherwise we can get a hotplug interrupt storm when we turn the panel off if hpd interrupts were enabled by the bios. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97471 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/amdgpu/dce8: disable hpd on local panelsAlex Deucher1-9/+39
Otherwise we can get a hotplug interrupt storm when we turn the panel off if hpd interrupts were enabled by the bios. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97471 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-09-28drm/amdgpu/dce11: disable hpd on local panelsAlex Deucher1-10/+13
Otherwise we can get a hotplug interrupt storm when we turn the panel off if hpd interrupts were enabled by the bios. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97471 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-09-28drm/amdgpu/dce10: disable hpd on local panelsAlex Deucher1-10/+13
Otherwise we can get a hotplug interrupt storm when we turn the panel off if hpd interrupts were enabled by the bios. bug: https://bugs.freedesktop.org/show_bug.cgi?id=97471 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-09-28drm/amdgpu/si/dpm: fix phase shedding setupAlex Deucher2-1/+2
Used the wrong index to setup the phase shedding mask. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-28drm/radeon/si/dpm: fix phase shedding setupAlex Deucher2-1/+2
Used the wrong index to setup the phase shedding mask. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2016-09-28drm/amdgpu/si/dpm: sync up quirks from radeonAlex Deucher1-0/+13
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu/vce3: don't forget to tear down some ringsGrazvydas Ignotas1-2/+4
We can use .num_rings for that. Fixes: 6f0359ff7307 ("vce3: add support for third vce ring") Cc: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu/i2c: add const where appropriateGrazvydas Ignotas2-14/+14
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu: don't leave dangling pointers aroundGrazvydas Ignotas2-0/+3
Right now it's possible to trigger fence_drv.fences[] dereference after the array has been freed. While the real problem is elsewhere, this still results in confusing errors that depend on how the freed memory was reused (I've seen "kernel tried to execute NX-protected page"), it's better to clear them and get NULL dereference so that it's obvious what's going wrong. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu: clear ring pointer in amdgpu_device on teardownGrazvydas Ignotas1-0/+2
This is in symmetry to setup done in amdgpu_ring_init. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu/vce: take all rings into account for idle checksAlex Deucher1-2/+5
Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu: add version bump for raster config programmingAlex Deucher1-1/+2
Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Marek Olšák <marek.olsak@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu: fix addr handling in amdgpu_vm_bo_update_mappingChristian König1-0/+1
Otherwise we will look at the wrong place in the IB when GART mappings are split into smaller updates. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Tom StDenis <Tom.StDenis@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-27drm/amdgpu: bypass vce clock if vce is idle on Fiji.Rex Zhu1-1/+2
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2016-09-25Linux 4.8-rc8Linus Torvalds1-1/+1
2016-09-25fault_in_multipages_readable() throws set-but-unused errorDave Chinner1-0/+1
When building XFS with -Werror, it now fails with: include/linux/pagemap.h: In function 'fault_in_multipages_readable': include/linux/pagemap.h:602:16: error: variable 'c' set but not used [-Werror=unused-but-set-variable] volatile char c; ^ This is a regression caused by commit e23d4159b109 ("fix fault_in_multipages_...() on architectures with no-op access_ok()"). Fix it by re-adding the "(void)c" trick taht was previously used to make the compiler think the variable is used. Signed-off-by: Dave Chinner <dchinner@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-25mm: check VMA flags to avoid invalid PROT_NONE NUMA balancingLorenzo Stoakes2-8/+7
The NUMA balancing logic uses an arch-specific PROT_NONE page table flag defined by pte_protnone() or pmd_protnone() to mark PTEs or huge page PMDs respectively as requiring balancing upon a subsequent page fault. User-defined PROT_NONE memory regions which also have this flag set will not normally invoke the NUMA balancing code as do_page_fault() will send a segfault to the process before handle_mm_fault() is even called. However if access_remote_vm() is invoked to access a PROT_NONE region of memory, handle_mm_fault() is called via faultin_page() and __get_user_pages() without any access checks being performed, meaning the NUMA balancing logic is incorrectly invoked on a non-NUMA memory region. A simple means of triggering this problem is to access PROT_NONE mmap'd memory using /proc/self/mem which reliably results in the NUMA handling functions being invoked when CONFIG_NUMA_BALANCING is set. This issue was reported in bugzilla (issue 99101) which includes some simple repro code. There are BUG_ON() checks in do_numa_page() and do_huge_pmd_numa_page() added at commit c0e7cad to avoid accidentally provoking strange behaviour by attempting to apply NUMA balancing to pages that are in fact PROT_NONE. The BUG_ON()'s are consistently triggered by the repro. This patch moves the PROT_NONE check into mm/memory.c rather than invoking BUG_ON() as faulting in these pages via faultin_page() is a valid reason for reaching the NUMA check with the PROT_NONE page table flag set and is therefore not always a bug. Link: https://bugzilla.kernel.org/show_bug.cgi?id=99101 Reported-by: Trevor Saunders <tbsaunde@tbsaunde.org> Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-25drm: bridge: analogix/dp: mark symbols static where possibleBaoyou Xie1-2/+2
We get 2 warnings when building kernel with W=1: drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1053:5: warning: no previous prototype for 'analogix_dp_get_modes' [-Wmissing-prototypes] drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1097:1: warning: no previous prototype for 'analogix_dp_detect' [-Wmissing-prototypes] In fact, both functions are only used in the file in which they are declared and don't need a declaration, but can be made static. So this patch marks both functions with 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1474788764-6069-1-git-send-email-baoyou.xie@linaro.org
2016-09-25drm/bochs: mark bochs_connector_get_modes() staticBaoyou Xie1-1/+1
We get 1 warning when building kernel with W=1: drivers/gpu/drm/bochs/bochs_kms.c:181:5: warning: no previous prototype for 'bochs_connector_get_modes' [-Wmissing-prototypes] In fact, this function is only used in the file in which it is declared and don't need a declaration, but can be made static. So this patch marks it 'static'. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1474788334-11007-1-git-send-email-baoyou.xie@linaro.org
2016-09-25radix tree: fix sibling entry handling in radix_tree_descend()Linus Torvalds1-4/+4
The fixes to the radix tree test suite show that the multi-order case is broken. The basic reason is that the radix tree code uses tagged pointers with the "internal" bit in the low bits, and calculating the pointer indices was supposed to mask off those bits. But gcc will notice that we then use the index to re-create the pointer, and will avoid doing the arithmetic and use the tagged pointer directly. This cleans the code up, using the existing is_sibling_entry() helper to validate the sibling pointer range (instead of open-coding it), and using entry_to_node() to mask off the low tag bit from the pointer. And once you do that, you might as well just use the now cleaned-up pointer directly. [ Side note: the multi-order code isn't actually ever used in the kernel right now, and the only reason I didn't just delete all that code is that Kirill Shutemov piped up and said: "Well, my ext4-with-huge-pages patchset[1] uses multi-order entries. It also converts shmem-with-huge-pages and hugetlb to them. I'm okay with converting it to other mechanism, but I need something. (I looked into Konstantin's RFC patchset[2]. It looks okay, but I don't feel myself qualified to review it as I don't know much about radix-tree internals.)" [1] http://lkml.kernel.org/r/20160915115523.29737-1-kirill.shutemov@linux.intel.com [2] http://lkml.kernel.org/r/147230727479.9957.1087787722571077339.stgit@zurg ] Reported-by: Matthew Wilcox <mawilcox@microsoft.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Cedric Blancher <cedric.blancher@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-25radix tree test suite: Test radix_tree_replace_slot() for multiorder entriesMatthew Wilcox2-5/+13
When we replace a multiorder entry, check that all indices reflect the new value. Also, compile the test suite with -O2, which shows other problems with the code due to some dodgy pointer operations in the radix tree code. Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-09-25fix memory leaks in tracing_buffers_splice_read()Al Viro1-6/+8
Cc: stable@vger.kernel.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-09-25tracing: Move mutex to protect against resetting of seq dataSteven Rostedt (Red Hat)1-7/+8
The iter->seq can be reset outside the protection of the mutex. So can reading of user data. Move the mutex up to the beginning of the function. Fixes: d7350c3f45694 ("tracing/core: make the read callbacks reentrants") Cc: stable@vger.kernel.org # 2.6.30+ Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-09-25MIPS: Fix delay slot emulation count in debugfsPaul Burton1-0/+1
Commit 432c6bacbd0c ("MIPS: Use per-mm page to execute branch delay slot instructions") accidentally removed use of the MIPS_FPU_EMU_INC_STATS macro from do_dsemulret, leading to the ds_emul file in debugfs always returning zero even though we perform delay slot emulations. Fix this by re-adding the use of the MIPS_FPU_EMU_INC_STATS macro. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Fixes: 432c6bacbd0c ("MIPS: Use per-mm page to execute branch delay slot instructions") Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/14301/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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