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7ed76e089a
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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|---|---|---|
| .. | ||
| include/mach | ||
| common.c | ||
| common.h | ||
| cpuidle.c | ||
| exynos-smc.S | ||
| firmware.c | ||
| headsmp.S | ||
| hotplug.c | ||
| Kconfig | ||
| mach-exynos4-dt.c | ||
| mach-exynos5-dt.c | ||
| Makefile | ||
| Makefile.boot | ||
| platsmp.c | ||
| pm.c | ||
| pm_domains.c | ||
| pmu.c | ||
| smc.h | ||