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dma: mmp_pdma: fix maximum transfer length 

There's no reason for limiting the maximum transfer length to 0x1000.
Take the actual bit mask instead; the PDMA is able to transfer chunks of
up to SZ_8K - 1.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
hifive-unleashed-5.1
Daniel Mack 2013-08-10 18:52:17 +02:00 committed by Vinod Koul
parent 638a542cc4
commit 1ac0e845c1
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/mmp_pdma.c
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@ -71,7 +71,7 @@
#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */
#define PDMA_ALIGNMENT 3
#define PDMA_MAX_DESC_BYTES 0x1000
#define PDMA_MAX_DESC_BYTES DCMD_LENGTH
struct mmp_pdma_desc_hw {
u32 ddadr; /* Points to the next descriptor + flags */