From: Daniel Mack <zonque@gmail.com>
Date: Sat, 10 Aug 2013 16:52:17 +0000 (+0200)
Subject: dma: mmp_pdma: fix maximum transfer length
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1ac0e845c10685f3643fe81a08c13be4b9416bce;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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>
---

diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c
index 3c2ad72a1621..eb75d4b4bafe 100644
--- a/drivers/dma/mmp_pdma.c
+++ b/drivers/dma/mmp_pdma.c
@@ -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 */