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authorBruce Allan <bruce.w.allan@intel.com>2009-10-26 11:23:06 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-26 16:16:19 -0700
commit53ac5a887519f0c3fc94a6acdfc22aa4e97f64f7 (patch)
tree633a65d0b39bf9846d5f00621663ab506abd4bae /drivers/net
parentdb2932ecf8dc07f65b410e921f96c5c51170c0ae (diff)
downloadlinux-53ac5a887519f0c3fc94a6acdfc22aa4e97f64f7.tar.bz2
e1000e: increase swflag acquisition timeout for ICHx/PCH
In some conditions (e.g. when AMT is enabled on the system), it is possible to take an extended period of time to for the driver to acquire the sw/fw/hw hardware semaphore used to protect against concurrent access of a shared resource (e.g. PHY registers). This could cause PHY registers to not get configured properly resulting in link issues. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/e1000e/ich8lan.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/e1000e/ich8lan.c b/drivers/net/e1000e/ich8lan.c
index ead66510e22f..fb2222d60a79 100644
--- a/drivers/net/e1000e/ich8lan.c
+++ b/drivers/net/e1000e/ich8lan.c
@@ -122,6 +122,8 @@
#define HV_LED_CONFIG PHY_REG(768, 30) /* LED Configuration */
+#define SW_FLAG_TIMEOUT 1000 /* SW Semaphore flag timeout in milliseconds */
+
/* ICH GbE Flash Hardware Sequencing Flash Status Register bit breakdown */
/* Offset 04h HSFSTS */
union ich8_hws_flash_status {
@@ -599,7 +601,7 @@ static s32 e1000_acquire_swflag_ich8lan(struct e1000_hw *hw)
goto out;
}
- timeout = PHY_CFG_TIMEOUT * 2;
+ timeout = SW_FLAG_TIMEOUT;
extcnf_ctrl |= E1000_EXTCNF_CTRL_SWFLAG;
ew32(EXTCNF_CTRL, extcnf_ctrl);