tg3: Prevent tx BD corruption

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This patch prevents a tx BD corruption bug by preventing the device from
powering down the PLL from L1 if the link speed is 10Mbps or 100Mbps.

The same bits are also used to prevent a system hang during chip reset
resulting from a complicated set of events that ultimately leads to
PCIe block register corruption.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Matt Carlson 2009-08-25 10:07:27 +00:00 • committed by David S. Miller

parent 521e6b90dd

commit 255ca311b6

2 changed files with 36 additions and 1 deletions

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28

drivers/net/tg3.c

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9

drivers/net/tg3.h

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