ioat: fix xor_idx_to_desc

For versions of the device that implement operation-types 0x87, 0x88
(IOAT_OP_XOR, IOAT_OP_XOR_VAL) this map determines whether a given
source is located in the base or extended descriptor.  Source addresses
6 through 8 require an extended descriptor, hence 0xe0, not 0xd0.  No
shipping hardware currently implements these operation types.

Reported-by: Evgueni Smogailov <evgueni.smogailov@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index e1e052ac7fd43beaf40b4d7c7f1a6e4ce612a167..000245e15225df6dabdae1b018b15d37e306000c 100644 (file)
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -73,7 +73,7 @@
 /* provide a lookup table for setting the source address in the base or
  * extended descriptor of an xor or pq descriptor
  */
-static u8 xor_idx_to_desc __read_mostly = 0xd0;
+static u8 xor_idx_to_desc __read_mostly = 0xe0;
 static u8 xor_idx_to_field[] __read_mostly = { 1, 4, 5, 6, 7, 0, 1, 2 };
 static u8 pq_idx_to_desc __read_mostly = 0xf8;
 static u8 pq_idx_to_field[] __read_mostly = { 1, 4, 5, 0, 1, 2, 4, 5 };