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Message-ID: <20091121092623.5715.76622.stgit@localhost.localdomain> Date: Sat, 21 Nov 2009 01:26:24 -0800 From: Jeff Kirsher <jeffrey.t.kirsher@...el.com> To: davem@...emloft.net Cc: netdev@...r.kernel.org, gospo@...hat.com, Bruce Allan <bruce.w.allan@...el.com>, Jeff Kirsher <jeffrey.t.kirsher@...el.com> Subject: [net-next-2.6 PATCH 15/23] e1000e: provide comment for 82571 workaround From: Bruce Allan <bruce.w.allan@...el.com> Signed-off-by: Bruce Allan <bruce.w.allan@...el.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com> --- drivers/net/e1000e/82571.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index 7cdf176..0e8aa34 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1114,6 +1114,13 @@ static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw) reg |= (1 << 22); ew32(GCR, reg); + /* + * Workaround for hardware errata. + * apply workaround for hardware errata documented in errata + * docs Fixes issue where some error prone or unreliable PCIe + * completions are occurring, particularly with ASPM enabled. + * Without fix, issue can cause tx timeouts. + */ reg = er32(GCR2); reg |= 1; ew32(GCR2, reg); -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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