Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8204cba7 authored by Maxim Shchetynin's avatar Maxim Shchetynin Committed by Benjamin Herrenschmidt
Browse files

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: default avatarMaxim Shchetynin <maxim@de.ibm.com>
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 9a23409b

arch/powerpc/sysdev/axonram.c

+4 −1
Original line number Diff line number Diff line
@@ -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;