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| author | Dave Jiang <dave.jiang@intel.com> | 2012-11-27 15:16:08 -0700 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2013-01-07 22:05:13 -0800 |
| commit | 6decffd5f6afaf55722d9c85b8739621dca63d0f (patch) | |
| tree | 42125cf2b650a00117c8d4354622898f6412bba0 | |
| parent | 1a363068dcc2269931daef360ed14d2a262f19f7 (diff) | |
| download | linux-0-day-6decffd5f6afaf55722d9c85b8739621dca63d0f.tar.gz linux-0-day-6decffd5f6afaf55722d9c85b8739621dca63d0f.tar.xz | |
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 <dave.jiang@intel.com>
Signed-off-by: Dan Williams <djbw@fb.com>
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 9d6f3bbf0e53d..e52cf1eb68399 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"); |