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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
..
acs5k_defconfig
…
acs5k_tiny_defconfig
…
am200epdkit_defconfig
…
ape6evm_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
armadillo800eva_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
assabet_defconfig
…
at91_dt_defconfig ARM: at91: merge all SOC_AT91SAM9xxx 2015-02-02 11:01:26 +01:00
axm55xx_defconfig ARM: axxia: Adding defconfig for AXM55xx 2014-05-23 18:18:45 +02:00
badge4_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
bcm2835_defconfig ARM: bcm2835: enable USB_DWC2_HOST in defconfig 2014-09-25 23:27:03 +02:00
bcm_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
bockw_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
cerfcube_defconfig
…
clps711x_defconfig ARM: clps711x: edb7211: Use new PWM driver for backlight 2014-09-04 21:39:53 +02:00
cm_x2xx_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
cm_x300_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
cns3420vb_defconfig ARM: cns3xxx: enable multiplatform support 2013-03-14 17:34:57 +01:00
colibri_pxa270_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
colibri_pxa300_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
collie_defconfig
…
corgi_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
davinci_all_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
dove_defconfig ARM: mvebu: defconfig: add MTD_SPI_NOR (new dependency for M25P80) 2014-05-05 01:02:02 +00:00
ebsa110_defconfig
…
efm32_defconfig ARM: efm32: update defconfig 2015-01-15 15:49:55 -08:00
em_x270_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
ep93xx_defconfig ARM: 8140/1: ep93xx: Enable DEBUG_LL_UART_PL01X 2014-09-16 16:10:48 +01:00
eseries_pxa_defconfig
…
exynos_defconfig ARM: exynos_defconfig: Disable IOMMU support 2015-03-03 04:45:01 +09:00
ezx_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
footbridge_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
h3600_defconfig ARM: 7849/2: h3600: update defconfig 2013-10-29 11:01:06 +00:00
h5000_defconfig
…
hackkit_defconfig
…
hisi_defconfig ARM: config: enable ARCH_HIP01 2015-01-21 14:32:25 -08:00
imote2_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
imx_v4_v5_defconfig ARM: imx: Fix the removal of CONFIG_SPI option 2014-11-04 19:00:01 +08:00
imx_v6_v7_defconfig ARM: imx_v6_v7_defconfig: enable more USB functions 2015-01-20 16:11:06 +08:00
integrator_defconfig ARM: integrator: set V4T and V5 as default multitargets 2014-10-22 09:49:26 +02:00
iop13xx_defconfig
…
iop32x_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
iop33x_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
ixp4xx_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
jornada720_defconfig
…
keystone_defconfig ARM: config: add DEVTMPFS option by default to keystone config 2015-01-29 09:00:20 -08:00
ks8695_defconfig
…
kzm9g_defconfig ARM: shmobile: kzm9g_defconfig: Update AK8975 config option 2014-12-21 16:41:37 +09:00
lart_defconfig
…
lpc32xx_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
lpd270_defconfig
…
lubbock_defconfig
…
mackerel_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
magician_defconfig arch: Change defconfigs to point to g_mass_storage. 2012-11-08 16:00:52 +02:00
mainstone_defconfig
…
marzen_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
mini2440_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
mmp2_defconfig ARM: mmp: enable debug uart port in defconfig 2012-08-16 17:49:08 +08:00
moxart_defconfig ARM: moxart: add MOXA ART SoC platform files 2013-12-22 11:57:38 -08:00
msm_defconfig tgt: defconfig cleanup 2014-07-17 22:07:44 +02:00
multi_v5_defconfig ARM: config: Add DLINK DIR665 options to multi_v5_defconfig 2014-11-01 23:36:56 +00:00
multi_v7_defconfig ARM: multi_v7_defconfig: Enable Exynos5420 Multi-Cluster PM support 2015-01-28 14:58:25 -08:00
mv78xx0_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
mvebu_v5_defconfig ARM: mvebu: Add DLINK DIR665 options to mvebu_v5_defconfig 2014-11-01 23:36:50 +00:00
mvebu_v7_defconfig ARM: SoC defconfig changes 2015-02-17 09:44:50 -08:00
mxs_defconfig ARM: imx: defconfig: Select CONFIG_FHANDLE 2014-07-18 16:10:10 +08:00
neponset_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
netwinder_defconfig
…
netx_defconfig
…
nhk8815_defconfig ARM: nomadik: configure in STMPE support 2014-11-06 09:06:22 +01:00
nuc910_defconfig
…
nuc950_defconfig
…
nuc960_defconfig
…
omap1_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
omap2plus_defconfig ARM: SoC defconfig changes 2015-02-17 09:44:50 -08:00
orion5x_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
palmz72_defconfig
…
pcm027_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
pleb_defconfig
…
prima2_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
pxa3xx_defconfig ARM: configs: Remove REGULATOR_VIRTUAL_CONSUMER from defconfigs 2014-09-04 22:07:52 +02:00
pxa168_defconfig
…
pxa255-idp_defconfig
…
pxa910_defconfig ARM: mmp: add display and fb support in pxa910 defconfig 2013-02-21 17:22:17 -08:00
qcom_defconfig ARM: qcom: Update defconfig 2014-09-22 13:59:08 -05:00
raumfeld_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
realview-smp_defconfig ARM: plat-versatile: update defconfigs for Versatile LEDs 2014-03-28 10:54:31 +01:00
realview_defconfig ARM: plat-versatile: update defconfigs for Versatile LEDs 2014-03-28 10:54:31 +01:00
rpc_defconfig ARM: 8268/1: configs: Enable DEBUG_LL_UART_8250 where needed 2015-01-21 15:49:36 +00:00
s3c2410_defconfig tgt: defconfig cleanup 2014-07-17 22:07:44 +02:00
s3c6400_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
s5pv210_defconfig
…
sama5_defconfig ARM: at91: sama5: enable atmel-isi and ov2640 in defconfig 2015-01-15 16:28:23 +01:00
shannon_defconfig
…
shmobile_defconfig ARM: SoC defconfig changes 2015-02-17 09:44:50 -08:00
simpad_defconfig
…
socfpga_defconfig ARM: socfpga_defconfig: Update defconfig for SoCFPGA 2014-10-24 16:51:13 -05:00
spear3xx_defconfig ARM: spear: use multiplatform configuration options. 2013-03-12 17:40:14 +01:00
spear6xx_defconfig ARM: spear: use multiplatform configuration options. 2013-03-12 17:40:14 +01:00
spear13xx_defconfig ARM: SPEAr13xx: Update defconfigs 2014-07-14 11:04:44 +05:30
spitz_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
sunxi_defconfig ARM: sunxi: Add AXP20x support in defconfig 2015-01-06 17:33:06 +01:00
tct_hammer_defconfig USB: remove CONFIG_USB_DEBUG from defconfig files 2014-05-28 09:40:45 -07:00
tegra_defconfig ARM: tegra: Regenerate defconfig based on v3.19-rc1 2015-01-06 14:10:57 +01:00
trizeps4_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
u300_defconfig ARM: u300: u300_defconfig: Enable PARTITION_ADVANCED 2014-04-14 09:21:43 +02:00
u8500_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
versatile_defconfig ARM: 8139/1: versatile: Enable DEBUG_LL_UART_PL01X 2014-09-16 16:10:46 +01:00
vexpress_defconfig ARM: vexpress: Enable platform-specific options in defconfig 2013-10-28 13:26:02 -07:00
viper_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00
vt8500_v6_v7_defconfig PM: Eliminate CONFIG_PM_RUNTIME 2014-12-19 22:55:06 +01:00
xcep_defconfig
…
zeus_defconfig USB: delete CONFIG_USB_DEVICEFS from defconfig 2014-05-27 16:07:13 -07:00