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sh: fix memory corruption of unflattened device tree

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unflatten_device_tree() makes use of memblock allocation, and
therefore must be called before paging_init() migrates the memblock
allocation data to the bootmem framework. Otherwise the record of the
allocation for the expanded device tree will be lost, and will
eventually be clobbered when allocated for another use.

Signed-off-by: Rich Felker <dalias@libc.org>
This commit is contained in:
Rich Felker 2017-07-31 01:27:50 -04:00
parent 9b7e30ab97
commit eb6b6930a7
2 changed files with 8 additions and 6 deletions
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6
arch/sh/boards/of-generic.c
View file

@ -126,12 +126,6 @@ static void __init sh_of_setup(char **cmdline_p)
{
struct device_node *root;
#ifdef CONFIG_USE_BUILTIN_DTB
unflatten_and_copy_device_tree();
#else
unflatten_device_tree();
#endif
board_time_init = sh_of_time_init;
sh_mv.mv_name = "Unknown SH model";

8
arch/sh/kernel/setup.c
View file

@ -330,6 +330,14 @@ void __init setup_arch(char **cmdline_p)
/* Let earlyprintk output early console messages */
early_platform_driver_probe("earlyprintk", 1, 1);
#ifdef CONFIG_OF_FLATTREE
#ifdef CONFIG_USE_BUILTIN_DTB
unflatten_and_copy_device_tree();
#else
unflatten_device_tree();
#endif
#endif
paging_init();
#ifdef CONFIG_DUMMY_CONSOLE