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Commit c2804b21f2e7f46f76500aa58850127b31054c84

Authored by Dave Jiang
Committed by Greg Kroah-Hartman
1 parent 2987ce159f
Exists in smarct4x-processor-sdk-04.01.00.06 and in 1 other branch smarct3x-processor-sdk-04.01.00.06

dmaengine: ioatdma: workaround SKX ioatdma version 

[ Upstream commit 34a31f0af84158955a9747fb5c6712da5bbb5331 ]

The Skylake ioatdma is technically CBDMA 3.2+ and contains the same hardware
bits with some additional 3.3 features, but it's not really 3.3 where the
driver is concerned.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Showing 1 changed file with 2 additions and 0 deletions Side-by-side Diff

drivers/dma/ioat/init.c
Diff comments   View file @ c2804b2
... ... @@ -1357,6 +1357,8 @@
1357 1357  
1358 1358 device->version = readb(device->reg_base + IOAT_VER_OFFSET);
1359 1359 if (device->version >= IOAT_VER_3_0) {
  1360 + if (is_skx_ioat(pdev))
  1361 + device->version = IOAT_VER_3_2;
1360 1362 err = ioat3_dma_probe(device, ioat_dca_enabled);
1361 1363  
1362 1364 if (device->version >= IOAT_VER_3_3)