Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 069/105] dmaengine: ioatdma: workaround SKX ioatdma version | Date | Fri, 4 Aug 2017 16:15:37 -0700 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Dave Jiang <dave.jiang@intel.com>
[ 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> --- drivers/dma/ioat/init.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/dma/ioat/init.c +++ b/drivers/dma/ioat/init.c @@ -1357,6 +1357,8 @@ static int ioat_pci_probe(struct pci_dev 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)
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