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| author | Arnd Bergmann <arnd@arndb.de> | 2012-09-04 15:01:37 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-09-04 15:01:37 +0200 |
| commit | 863e99a8c1ea2b0391491904297f57a0f6a1fdd6 (patch) | |
| tree | 0e7789f83c0ba3a1bc3c19d3ccf5ea6f84f19db6 /drivers/acpi/numa.c | |
| parent | ARM: iop3xx: use fixed PCI i/o mapping (diff) | |
| parent | ARM: Fix ioremap() of address zero (diff) | |
| download | linux-863e99a8c1ea2b0391491904297f57a0f6a1fdd6.tar.xz linux-863e99a8c1ea2b0391491904297f57a0f6a1fdd6.zip | |
Merge commit 'a849088aa1' from rmk/fixes into cleanup/io-pci
As Stephen Rothwell reports, a849088aa155 ("ARM: Fix ioremap() of
address zero") from the arm-current tree and commit c2794437091a ("ARM:
Add fixed PCI i/o mapping") from the arm-soc tree conflict in
a nontrivial way in arch/arm/mm/mmu.c.
Rob Herring explains:
The PCI i/o reserved area has a dummy physical address of 0 and
needs to be skipped by ioremap searches. So we don't set
VM_ARM_STATIC_MAPPING to prevent matches by ioremap. The vm_struct
settings don't really matter when we do the real mapping of the
i/o space.
Since commit a849088aa155 is at the start of the fixes branch
in the arm tree, we can merge it into the branch that contains
the other ioremap changes.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/acpi/numa.c')
| -rw-r--r-- | drivers/acpi/numa.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index e56f3be7b07d..cb31298ca684 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -237,6 +237,8 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header, return 0; } +static int __initdata parsed_numa_memblks; + static int __init acpi_parse_memory_affinity(struct acpi_subtable_header * header, const unsigned long end) @@ -250,8 +252,8 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header, acpi_table_print_srat_entry(header); /* let architecture-dependent part to do it */ - acpi_numa_memory_affinity_init(memory_affinity); - + if (!acpi_numa_memory_affinity_init(memory_affinity)) + parsed_numa_memblks++; return 0; } @@ -304,8 +306,10 @@ int __init acpi_numa_init(void) acpi_numa_arch_fixup(); - if (cnt <= 0) - return cnt ?: -ENOENT; + if (cnt < 0) + return cnt; + else if (!parsed_numa_memblks) + return -ENOENT; return 0; } |