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| author | Maxim Shchetynin <maxim@de.ibm.com> | 2008-07-16 05:51:42 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-22 10:39:31 +1000 |
| commit | 8204cba7fa0ca0752fdaec021dae2634788178aa (patch) | |
| tree | 4cbaa53ba45a43af73014ccd7781ad8ada734e38 | |
| parent | 9a23409b69440e76d34dc23846cae44f46f60d98 (diff) | |
| download | lwn-8204cba7fa0ca0752fdaec021dae2634788178aa.tar.gz lwn-8204cba7fa0ca0752fdaec021dae2634788178aa.zip | |
powerpc/axonram: Enable partitioning of the Axons DDR2 DIMMs
DDR2 memory DIMMs on the Axon could be accessed only as one partition
when using file system drivers which are using the direct_access() method.
This patch enables for such file system drivers to access Axon's DDR2 memory
even if it is splitted in several partitions.
Signed-off-by: Maxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/sysdev/axonram.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 9b639ede06da..9e105cbc5e5f 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -150,7 +150,10 @@ axon_ram_direct_access(struct block_device *device, sector_t sector, struct axon_ram_bank *bank = device->bd_disk->private_data; loff_t offset; - offset = sector << AXON_RAM_SECTOR_SHIFT; + offset = sector; + if (device->bd_part != NULL) + offset += device->bd_part->start_sect; + offset <<= AXON_RAM_SECTOR_SHIFT; if (offset >= bank->size) { dev_err(&bank->device->dev, "Access outside of address space\n"); return -ERANGE; |