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| author | Stephen Hemminger <shemminger@linux-foundation.org> | 2007-08-21 14:34:02 -0700 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-08-25 02:31:06 -0400 |
| commit | b23457737f073eaf5a7b797c2a195f83633e003d (patch) | |
| tree | 780b7c20dfab64d68a5cad47a96ce96bfd1724f1 /drivers/net/sky2.c | |
| parent | c46ac9463fbdee41723dd9fd108b2c1ffd30615f (diff) | |
| download | lwn-b23457737f073eaf5a7b797c2a195f83633e003d.tar.gz lwn-b23457737f073eaf5a7b797c2a195f83633e003d.zip | |
sky2: clear PCI power control reg at startup
Make sure PCI register for PHY power gets cleared on boot, and make
sure to avoid any PCI posting problems.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 757592436390..33ba3486389e 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -219,9 +219,12 @@ static void sky2_power_on(struct sky2_hw *hw) else sky2_write8(hw, B2_Y2_CLK_GATE, 0); - if (hw->chip_id == CHIP_ID_YUKON_EC_U || hw->chip_id == CHIP_ID_YUKON_EX) { + if (hw->chip_id == CHIP_ID_YUKON_EC_U || + hw->chip_id == CHIP_ID_YUKON_EX) { u32 reg; + sky2_pci_write32(hw, PCI_DEV_REG3, 0); + reg = sky2_pci_read32(hw, PCI_DEV_REG4); /* set all bits to 0 except bits 15..12 and 8 */ reg &= P_ASPM_CONTROL_MSK; @@ -238,6 +241,8 @@ static void sky2_power_on(struct sky2_hw *hw) reg = sky2_read32(hw, B2_GP_IO); reg |= GLB_GPIO_STAT_RACE_DIS; sky2_write32(hw, B2_GP_IO, reg); + + sky2_read32(hw, B2_GP_IO); } } |