cma: increase CMA_ALIGNMENT upper limit to 12
Some systems require a larger maximum PAGE_SIZE order for CMA allocations.
To accommodate such systems, increase the upper-bound of the
CMA_ALIGNMENT range to 12 (which ends up being 16MB on systems with 4K
pages).
Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 4b7b452..23b8726 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -258,7 +258,7 @@
config CMA_ALIGNMENT
int "Maximum PAGE_SIZE order of alignment for contiguous buffers"
- range 4 9
+ range 4 12
default 8
help
DMA mapping framework by default aligns all buffers to the smallest