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| author | Santosh Shilimkar <santosh.shilimkar@ti.com> | 2013-08-01 04:12:01 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-31 15:49:29 +0100 |
| commit | 26ba47b18318abe7dadbe9294a611c0e932651d8 (patch) | |
| tree | ab542f22462c683920457069bf95893252f42538 /drivers | |
| parent | ARM: 7797/1: mmc: Use dma_max_pfn(dev) helper for bounce_limit calculations (diff) | |
| download | linux-26ba47b18318abe7dadbe9294a611c0e932651d8.tar.xz linux-26ba47b18318abe7dadbe9294a611c0e932651d8.zip | |
ARM: 7805/1: mm: change max*pfn to include the physical offset of memory
Most of the kernel code assumes that max*pfn is maximum pfns because
the physical start of memory is expected to be PFN0. Since this
assumption is not true on ARM architectures, the meaning of max*pfn
is number of memory pages. This is done to keep drivers happy which
are making use of of these variable to calculate the dma bounce limit
using dma_mask.
Now since we have a architecture override possibility for DMAable
maximum pfns, lets make meaning of max*pfns as maximum pnfs on ARM
as well.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions