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| author | Ingo Molnar <mingo@kernel.org> | 2015-02-24 15:55:28 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-24 15:55:28 +0100 |
| commit | a1fb6696c662920f695c97591d759391aca8a1ad (patch) | |
| tree | 25cc9ca4d1d291e122ff694dd41a9cc6d6513f60 /arch/powerpc/sysdev/axonram.c | |
| parent | x86/mm/pat: Ensure different messages in STRICT_DEVMEM and PAT cases (diff) | |
| parent | Linux 4.0-rc1 (diff) | |
| download | linux-a1fb6696c662920f695c97591d759391aca8a1ad.tar.xz linux-a1fb6696c662920f695c97591d759391aca8a1ad.zip | |
Merge tag 'v4.0-rc1' into x86/mm, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/sysdev/axonram.c')
| -rw-r--r-- | arch/powerpc/sysdev/axonram.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index f532c92bf99d..ee90db17b097 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -139,26 +139,17 @@ axon_ram_make_request(struct request_queue *queue, struct bio *bio) * axon_ram_direct_access - direct_access() method for block device * @device, @sector, @data: see block_device_operations method */ -static int +static long axon_ram_direct_access(struct block_device *device, sector_t sector, - void **kaddr, unsigned long *pfn) + void **kaddr, unsigned long *pfn, long size) { struct axon_ram_bank *bank = device->bd_disk->private_data; - loff_t offset; - - 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; - } + loff_t offset = (loff_t)sector << AXON_RAM_SECTOR_SHIFT; *kaddr = (void *)(bank->ph_addr + offset); - *pfn = virt_to_phys(kaddr) >> PAGE_SHIFT; + *pfn = virt_to_phys(*kaddr) >> PAGE_SHIFT; - return 0; + return bank->size - offset; } static const struct block_device_operations axon_ram_devops = { |