From: Maxim Shchetynin Date: Tue, 15 Jul 2008 19:51:42 +0000 (+1000) Subject: powerpc/axonram: Enable partitioning of the Axons DDR2 DIMMs X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8204cba7fa0ca0752fdaec021dae2634788178aa;p=mv-sheeva.git 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 Signed-off-by: Arnd Bergmann Signed-off-by: Benjamin Herrenschmidt --- diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index 9b639ede06d..9e105cbc5e5 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;