Revision 31a55cf145f2e3d74a7488e86bd0b33b64250fce authored by Dave Airlie on 19 March 2015, 04:01:42 UTC, committed by Dave Airlie on 19 March 2015, 04:01:42 UTC
Some urgent regression fixes to booting failures Exynos DRM occured. Summary: - Fix two urgent null pointer dereference bugs in case of enabling or disabling IOMMU. There was two cases to these issues. One is that plane->crtc is accessed by exynos_disable_plane() when device tree binding is broken so device driver tries to release, which means that the mode set operation isn't invoked yet so plane->crtc is still NULL and exynos_disable_plane() will access NULL pointer. This issue is fixed by checking if the plane->crtc is NULL or not in exynos_disable_plane() Other is that fimd_wait_for_vblank() is called to avoid from page fault with IOMMU before the ctx object is created. At this time, fimd_wait_for_vblank() tries to access ctx->crtc but the ctx->crtc is still NULL because exynos_drm_crtc_create() isn't called yet. This issue is fixed by creating a crtc object and setting it to ctx->crtc prior to fimd_wait_for_vblank() call. For more details, you can refer to below an e-mail thread, http://www.spinics.net/lists/linux-samsung-soc/msg42436.html - Remove unnecessary file not used and fix trivial issues. * 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: drm/exynos: fix the initialization order in FIMD drm/exynos: fix typo config name correctly. drm/exynos: Check for NULL dereference of crtc drm/exynos: IS_ERR() vs NULL bug drm/exynos: remove unused files
File | Mode | Size |
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include | ||
Kconfig | -rw-r--r-- | 2.2 KB |
Makefile | -rw-r--r-- | 604 bytes |
Makefile.boot | -rw-r--r-- | 85 bytes |
cats-hw.c | -rw-r--r-- | 2.0 KB |
cats-pci.c | -rw-r--r-- | 1.4 KB |
common.c | -rw-r--r-- | 6.3 KB |
common.h | -rw-r--r-- | 364 bytes |
dc21285-timer.c | -rw-r--r-- | 3.2 KB |
dc21285.c | -rw-r--r-- | 8.8 KB |
dma.c | -rw-r--r-- | 1.1 KB |
ebsa285-pci.c | -rw-r--r-- | 1.0 KB |
ebsa285.c | -rw-r--r-- | 2.5 KB |
isa-irq.c | -rw-r--r-- | 4.3 KB |
isa-rtc.c | -rw-r--r-- | 1.2 KB |
isa-timer.c | -rw-r--r-- | 850 bytes |
isa.c | -rw-r--r-- | 2.1 KB |
netwinder-hw.c | -rw-r--r-- | 14.1 KB |
netwinder-pci.c | -rw-r--r-- | 1.2 KB |
personal-pci.c | -rw-r--r-- | 1.4 KB |
personal.c | -rw-r--r-- | 535 bytes |
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