diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2014-08-20 17:10:31 +0200 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2014-09-08 15:57:26 +0100 |
| commit | 8f73d4b7011061f46ba6f46006b2848b412ff43f (patch) | |
| tree | 7a0d70a3d0751a9ac7680c74f2a0772545d434da /drivers/of/fdt.c | |
| parent | 7dbe5849fb50fc9b5b77a8f590c87a577ddc9bb6 (diff) | |
| download | lwn-8f73d4b7011061f46ba6f46006b2848b412ff43f.tar.gz lwn-8f73d4b7011061f46ba6f46006b2848b412ff43f.zip | |
of: Fix memory block alignment in early_init_dt_add_memory_arch()
If a memory block is not aligned to PAGE_SIZE, its base address must be
rounded up, not down, and its size must be reduced.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'drivers/of/fdt.c')
| -rw-r--r-- | drivers/of/fdt.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 79cb8313c7d8..2d34afb2647d 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -928,7 +928,11 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname, void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size) { const u64 phys_offset = __pa(PAGE_OFFSET); - base &= PAGE_MASK; + + if (!PAGE_ALIGNED(base)) { + size -= PAGE_SIZE - (base & ~PAGE_MASK); + base = PAGE_ALIGN(base); + } size &= PAGE_MASK; if (base > MAX_PHYS_ADDR) { |