Javier Martinez Canillas 6562f3bd39 ARM: exynos_defconfig: Disable IOMMU support ... Enabling Exynos DRM IOMMU support for Exynos is currently broken and causes a BUG on exynos-iommu driver. This was not an issue since the options was disabled in exynos_defconfig but after commit 8dcc14f82f ("drm/exynos: IOMMU support should not be selectable by user"), it is selected if EXYNOS_IOMMU is enabled which is in exynos_defconfig. So a kernel built using exynos_defconfig after the mentioned commit fails to boot [0]. Disable IOMMU support in Exynos defconfig until things get sorted out. [0]: [ 1.242183] ------------[ cut here ]------------ [ 1.246191] kernel BUG at drivers/iommu/exynos-iommu.c:481! [ 1.251747] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM [ 1.257561] Modules linked in: [ 1.260603] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.19.0-07478-g796e1c55717e #490 [ 1.268412] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 1.274489] task: ee06c000 ti: ee05a000 task.ti: ee05a000 [ 1.279874] PC is at __exynos_sysmmu_enable+0x184/0x190 [ 1.285080] LR is at exynos_iommu_attach_device+0x44/0xb0 [ 1.290461] pc : [<c0254a14>] lr : [<c0254a64>] psr: 60000193 [ 1.290461] sp : ee05bcf8 ip : 00000000 fp : ed84aa40 [ 1.301916] r10: ed84a890 r9 : a0000113 r8 : 6db30000 [ 1.307125] r7 : ed84aa40 r6 : 00000000 r5 : 00000000 r4 : ee174e10 [ 1.313635] r3 : 6db30000 r2 : ed84aa40 r1 : 6db30000 r0 : ee174e10 [ 1.320147] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.327524] Control: 10c5387d Table: 4000406a DAC: 00000015 [ 1.333252] Process swapper/0 (pid: 1, stack limit = 0xee05a210) [ 1.339241] Stack: (0xee05bcf8 to 0xee05c000) [ 1.343581] bce0: 6db30000 ee174e10 [ 1.351741] bd00: ed84a880 00000000 ed84aa40 ee174e10 a0000113 ed84a890 00000000 c0254a64 [ 1.359900] bd20: 00000000 6db30000 ee174e10 ed84adc0 00000005 00000034 00000001 c0692c1c [ 1.368059] bd40: 00000097 c02526c8 ee29f050 c0017210 ee29f050 ee174e10 edab6810 c0282558 [ 1.376219] bd60: edab6a10 ee1cb000 00000005 c0283520 ee29f240 c028f210 edab6810 ee2ef280 [ 1.384378] bd80: edb24680 ed84a680 ee1cb000 c02883f8 edab6810 ee1cb000 ee1cb000 00000000 [ 1.392537] bda0: ed84a680 ee2ef450 00000000 c027e968 ee1cb000 00000000 00000000 c0268fd4 [ 1.400696] bdc0: edab6800 c06b0de4 ee1cb000 c026a8bc ee2ef0c0 c028f210 00000002 ee2ef460 [ 1.408855] bde0: ee2ef460 00000002 ee2ef280 c0288728 c04af5d0 edab6810 ee2ef280 00000000 [ 1.417014] be00: c06b1348 c0288918 c06b0f00 c06b0f00 edab6810 00000001 c06b0da0 c027eaf4 [ 1.425173] be20: c070334c edaee190 00000000 edab6810 ffffffed c06b0da0 00000000 c028da1c [ 1.433332] be40: edab6810 c070334c 00000000 c028c5f8 edab6810 c06b0da0 edab6844 00000000 [ 1.441492] be60: eda3c740 c028c7a4 c06b0da0 00000000 c028c718 c028af74 ee005274 ee3b7b40 [ 1.449652] be80: c06b0da0 ee3b7680 c06b1540 c028bde4 c05b6990 c06b0da0 c0703324 c06b0da0 [ 1.457811] bea0: c0703324 00000000 c069ab18 c028cdc4 00000000 00000000 c0703324 c027ebd8 [ 1.465970] bec0: 00000000 c05b6990 ffffffff 00000000 00000000 00000000 00000000 c00c4574 [ 1.474129] bee0: 00000000 00000000 c069ab18 c027eb1c 00000000 c069ab18 c069ab18 c0008944 [ 1.482288] bf00: 00000036 c04770e8 ee049800 c06eace0 ee06c000 60000113 c069eab0 00000000 [ 1.490447] bf20: 00000000 c069eab0 60000113 00000000 ef7fcabc ef7fcaae c061c594 c0038640 [ 1.498607] bf40: c05cb1d0 c061bc24 00000006 00000006 c069ea50 c06724d4 00000006 c06724b4 [ 1.506766] bf60: c06c7600 c0647588 c0692c1c 00000097 00000000 c0647d40 00000006 00000006 [ 1.514925] bf80: c0647588 c003d2d8 00000000 c046921c 00000000 00000000 00000000 00000000 [ 1.523084] bfa0: 00000000 c0469224 00000000 c000e680 00000000 00000000 00000000 00000000 [ 1.531243] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.539402] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 1.547567] [<c0254a14>] (__exynos_sysmmu_enable) from [<c0254a64>] (exynos_iommu_attach_device+0x44/0xb0) [ 1.557199] [<c0254a64>] (exynos_iommu_attach_device) from [<c02526c8>] (iommu_attach_device+0x18/0x24) [ 1.566576] [<c02526c8>] (iommu_attach_device) from [<c0017210>] (arm_iommu_attach_device+0x18/0x50) [ 1.575690] [<c0017210>] (arm_iommu_attach_device) from [<c0282558>] (drm_iommu_attach_device+0x50/0xb4) [ 1.585150] [<c0282558>] (drm_iommu_attach_device) from [<c0283520>] (fimd_bind+0x94/0x1b8) [ 1.593483] [<c0283520>] (fimd_bind) from [<c02883f8>] (component_bind_all+0xb4/0x214) [ 1.601380] [<c02883f8>] (component_bind_all) from [<c027e968>] (exynos_drm_load+0x9c/0x13c) [ 1.609802] [<c027e968>] (exynos_drm_load) from [<c0268fd4>] (drm_dev_register+0xa0/0xf4) [ 1.617960] [<c0268fd4>] (drm_dev_register) from [<c026a8bc>] (drm_platform_init+0x44/0xcc) [ 1.626293] [<c026a8bc>] (drm_platform_init) from [<c0288728>] (try_to_bring_up_master.part.3+0xc8/0x104) [ 1.635839] [<c0288728>] (try_to_bring_up_master.part.3) from [<c0288918>] (component_master_add_with_match+0xcc/0x114) [ 1.646602] [<c0288918>] (component_master_add_with_match) from [<c027eaf4>] (exynos_drm_platform_probe+0xec/0x114) [ 1.657019] [<c027eaf4>] (exynos_drm_platform_probe) from [<c028da1c>] (platform_drv_probe+0x48/0x98) [ 1.666221] [<c028da1c>] (platform_drv_probe) from [<c028c5f8>] (driver_probe_device+0x114/0x234) [ 1.675075] [<c028c5f8>] (driver_probe_device) from [<c028c7a4>] (__driver_attach+0x8c/0x90) [ 1.683494] [<c028c7a4>] (__driver_attach) from [<c028af74>] (bus_for_each_dev+0x54/0x88) [ 1.691653] [<c028af74>] (bus_for_each_dev) from [<c028bde4>] (bus_add_driver+0xd8/0x1cc) [ 1.699812] [<c028bde4>] (bus_add_driver) from [<c028cdc4>] (driver_register+0x78/0xf4) [ 1.707797] [<c028cdc4>] (driver_register) from [<c027ebd8>] (exynos_drm_init+0xbc/0x110) [ 1.715956] [<c027ebd8>] (exynos_drm_init) from [<c0008944>] (do_one_initcall+0x80/0x1d0) [ 1.724117] [<c0008944>] (do_one_initcall) from [<c0647d40>] (kernel_init_freeable+0x108/0x1d4) [ 1.732796] [<c0647d40>] (kernel_init_freeable) from [<c0469224>] (kernel_init+0x8/0xe4) [ 1.740869] [<c0469224>] (kernel_init) from [<c000e680>] (ret_from_fork+0x14/0x34) [ 1.748419] Code: e3403110 11a02001 01a02003 eaffffe4 (e7f001f2) [ 1.754502] ---[ end trace f58ad362326928d7 ]--- Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>		2015-03-03 04:45:01 +09:00
..
alpha	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
arc	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2015-02-18 08:49:20 -08:00
arm	ARM: exynos_defconfig: Disable IOMMU support	2015-03-03 04:45:01 +09:00
arm64	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
avr32	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
blackfin	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-02-21 12:59:04 -08:00
c6x
cris
frv	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
hexagon
ia64	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
m32r	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
m68k	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
metag	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
microblaze
mips	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2015-02-21 19:41:38 -08:00
mn10300	OK, this has the big virtio 1.0 implementation, as specified by OASIS.	2015-02-18 09:24:01 -08:00
nios2	nios2 for v3.20	2015-02-17 14:23:42 -08:00
openrisc	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
parisc	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:07:08 -08:00
powerpc	The clock framework changes for 3.20 contain the usual driver additions,	2015-02-21 12:30:30 -08:00
s390	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-02-22 17:42:14 -08:00
score
sh	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
sparc	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
tile
um
unicore32
x86	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 11:12:07 -08:00
xtensa	asm-generic: uaccess.h cleanup	2015-02-18 10:02:24 -08:00
.gitignore
Kconfig