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Commit d0b0c8c7 authored by Dan Williams's avatar Dan Williams
Browse files

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: default avatarEvgueni Smogailov <evgueni.smogailov@intel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 9b487ced

drivers/dma/ioat/dma_v3.c

+1 −1
Original line number Diff line number Diff line
@@ -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 const u8 xor_idx_to_desc = 0xd0;

static const u8 xor_idx_to_desc = 0xe0;

static const u8 xor_idx_to_field[] = { 1, 4, 5, 6, 7, 0, 1, 2 };

static const u8 pq_idx_to_desc = 0xf8;

static const u8 pq_idx_to_field[] = { 1, 4, 5, 0, 1, 2, 4, 5 };