From: Dave Jiang Date: Tue, 27 Nov 2012 22:16:08 +0000 (-0700) Subject: ioat: remove chanerr mask setting for IOAT v3.x X-Git-Tag: next-20130218~69^2~2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9e2133a764619f553d2538e1402df269d1cf851b;p=karo-tx-linux.git ioat: remove chanerr mask setting for IOAT v3.x The existing code set a value in the PCI_CHANERRMSK_INT register for a workaround to address a pre-silicon bug on the Intel 5520 IO hub that has been fixed when the hardware was released. There is no need for this code. Signed-off-by: Dave Jiang Signed-off-by: Dan Williams --- diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 9d6f3bbf0e53..e52cf1eb6839 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -1168,12 +1168,7 @@ static int ioat3_reset_hw(struct ioat_chan_common *chan) chanerr = readl(chan->reg_base + IOAT_CHANERR_OFFSET); writel(chanerr, chan->reg_base + IOAT_CHANERR_OFFSET); - /* -= IOAT ver.3 workarounds =- */ - /* Write CHANERRMSK_INT with 3E07h to mask out the errors - * that can cause stability issues for IOAT ver.3, and clear any - * pending errors - */ - pci_write_config_dword(pdev, IOAT_PCI_CHANERRMASK_INT_OFFSET, 0x3e07); + /* clear any pending errors */ err = pci_read_config_dword(pdev, IOAT_PCI_CHANERR_INT_OFFSET, &chanerr); if (err) { dev_err(&pdev->dev, "channel error register unreachable\n");