https://github.com/torvalds/linux
Presently, using exynos_defconfig with CONFIG_DEBUG_LL and CONFIG_EARLY_PRIN on, kernel is not booting, we are getting following: [ 0.000000] ------------[ cut here ]------------ [ 0.000000] kernel BUG at mm/vmalloc.c:1134! [ 0.000000] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.11.0-rc1 #633 [ 0.000000] task: c052ec48 ti: c0524000 task.ti: c0524000 [ 0.000000] PC is at vm_area_add_early+0x54/0x94 [ 0.000000] LR is at add_static_vm_early+0xc/0x60 Its because exynos[4/5]_map_io() function ioremaps a single 512KB memory size for all the four uart ports which envelopes the mapping created by debug_ll_io_init(), called earlier in exynos_init_io(). This patch removes iodesc entries for UART controller for all Samsung SoC's, since now the Samsung uart driver does a ioremap during probe and any needed iomapping for earlyprintk will be handled by debug_ll_io_init(). Tested on smdk4412 and smdk5250. Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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- v2.6.19-rc5
- v2.6.19-rc4
- v2.6.19-rc3
- v2.6.19-rc2
- v2.6.19-rc1
- v2.6.19
- v2.6.18-rc7
- v2.6.18-rc6
- v2.6.18-rc5
- v2.6.18-rc4
- v2.6.18-rc3
- v2.6.18-rc2
- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
- v2.6.17-rc2
- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
- v2.6.16-rc3
- v2.6.16-rc2
- v2.6.16-rc1
- v2.6.16
- v2.6.15-rc7
- v2.6.15-rc6
- v2.6.15-rc5
- v2.6.15-rc4
- v2.6.15-rc3
- v2.6.15-rc2
- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
- v2.6.14-rc2
- v2.6.14-rc1
- v2.6.14
- v2.6.13-rc7
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- v2.6.13
- v2.6.12-rc6
- v2.6.12-rc5
- v2.6.12-rc4
- v2.6.12-rc3
- v2.6.12-rc2
- v2.6.12
- v2.6.11-tree
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ARM: EXYNOS: Fix low level debug support
File | Mode | Size |
---|---|---|
Documentation | ||
arch | ||
block | ||
crypto | ||
drivers | ||
firmware | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.gitignore | -rw-r--r-- | 1.1 KB |
.mailmap | -rw-r--r-- | 4.4 KB |
COPYING | -rw-r--r-- | 18.3 KB |
CREDITS | -rw-r--r-- | 93.1 KB |
Kbuild | -rw-r--r-- | 2.5 KB |
Kconfig | -rw-r--r-- | 252 bytes |
MAINTAINERS | -rw-r--r-- | 253.4 KB |
Makefile | -rw-r--r-- | 47.4 KB |
README | -rw-r--r-- | 18.3 KB |
REPORTING-BUGS | -rw-r--r-- | 7.3 KB |
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