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authorDave Jiang <dave.jiang@intel.com>2016-12-13 11:15:27 -0700
committerVinod Koul <vinod.koul@intel.com>2017-01-02 08:12:59 +0530
commit34a31f0af84158955a9747fb5c6712da5bbb5331 (patch)
tree43f719d89f81a27575c8877086f8085747e6c25e /drivers/dma
parent1594c18fd297a8edcc72bc4b161f3f52603ebb92 (diff)
downloadlinux-34a31f0af84158955a9747fb5c6712da5bbb5331.tar.bz2
dmaengine: ioatdma: workaround SKX ioatdma version
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>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioat/init.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
index 51b2b643ba71..ace5cb2cb12f 100644
--- a/drivers/dma/ioat/init.c
+++ b/drivers/dma/ioat/init.c
@@ -1364,6 +1364,8 @@ static int ioat_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
device->version = readb(device->reg_base + IOAT_VER_OFFSET);
if (device->version >= IOAT_VER_3_0) {
+ if (is_skx_ioat(pdev))
+ device->version = IOAT_VER_3_2;
err = ioat3_dma_probe(device, ioat_dca_enabled);
if (device->version >= IOAT_VER_3_3)