evie/android_kernel_oneplus_msm8998
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wil6210: disable PCIe relaxed ordering

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In previous commit cd958296ac
("wil6210: enable WA for PCIe HW errata")
relaxed ordering (bit 5) was set, in addition
to the 'No snoop" setting.
Enabling relaxed ordering can cause a race condition
between the write transactions and interrupts when
using INT instead of MSI.
As relaxed ordering is not required to resolve the
PCIe HW issue, it should be disabled.

CRs-Fixed: 998870
Change-Id: I53113d6454de577d4e68f226975a078889d6b2c3
Signed-off-by: Maya Erez <merez@codeaurora.org>
This commit is contained in:
Maya Erez 2016-04-04 23:53:46 +03:00 • committed by Jeevan Shriram
parent efacf5d031
commit b471d17dec
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/ath/wil6210/main.c
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@ -617,8 +617,7 @@ static int wil_target_reset(struct wil6210_priv *wil)
BIT_DMA_OFUL_NID_0_RX_EXT_A3_SRC);
/* Enable fix for PCIe HW bug, set "No snoop" for RX transactions */
wil_s(wil, RGF_DMA_PEDI_DIF, BIT_DMA_WR_CMD_ATTR_NO_SNOOP |
BIT_DMA_WR_CMD_ATTR_RELAXED_ORDERING);
wil_s(wil, RGF_DMA_PEDI_DIF, BIT_DMA_WR_CMD_ATTR_NO_SNOOP);
wil_dbg_misc(wil, "Reset completed in %d ms\n", delay * RST_DELAY);
return 0;