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| author | Doug Anderson <dianders@chromium.org> | 2013-06-05 22:56:33 +0200 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2013-06-08 03:12:00 +0200 |
| commit | 9c1fcdccc7ce5611ec1edf45dbbe51b10e333bd3 (patch) | |
| tree | ecc6760a64b282615c38cdd4f53276e0520e230a /drivers/base | |
| parent | Merge tag 'renesas-fixes-for-v3.10' of git://git.kernel.org/pub/scm/linux/ker... (diff) | |
| download | linux-9c1fcdccc7ce5611ec1edf45dbbe51b10e333bd3.tar.xz linux-9c1fcdccc7ce5611ec1edf45dbbe51b10e333bd3.zip | |
ARM: exynos: add debug_ll_io_init() call in exynos_init_io()
If the early MMU mapping of the UART happens to get booted out of the
TLB between the start of paging_init() and when we finally re-add the
UART at the very end of s3c_init_cpu(), we'll get a hang at bootup if
we've got early_printk enabled. Avoid this hang by calling
debug_ll_io_init() early.
Without this patch, you can reliably reproduce a hang when early
printk is enabled by adding flush_tlb_all() at the start of
exynos_init_io(). After this patch the hang goes away.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/base')
0 files changed, 0 insertions, 0 deletions