diff options
| author |   Mark Rustad <mark.d.rustad@intel.com> | 2015-10-27 13:23:14 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-12-03 02:32:12 -0800 |
| commit | efff2e027758fd5cc739d500397f729591f32a94 (patch) | |
| tree | 9fa970bb5b7da8b49c1f3902858e1a9b418eb7d0 /drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c | |
| parent | ixgbe: Update PTP to support X550EM_x devices (diff) | |
| download | linux-dev-efff2e027758fd5cc739d500397f729591f32a94.tar.xz linux-dev-efff2e027758fd5cc739d500397f729591f32a94.zip | |
ixgbe: Correct spec violations by waiting after reset
The ixgbe driver was violating the specification in the datasheet
by not waiting 1ms before checking for the reset bit clearing. This
is called out for devices supported by ixgbe, so implement the
required delay.
Reported-by: Dan Streetman <dan.streetman@canonical.com>
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Darin Miller <darin.j.miller@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c index 65db69b862fb..8f09d291a043 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c @@ -1,7 +1,7 @@ /******************************************************************************* Intel 10 Gigabit PCI Express Linux driver - Copyright(c) 1999 - 2014 Intel Corporation. + Copyright(c) 1999 - 2015 Intel Corporation. This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, @@ -765,13 +765,14 @@ mac_reset_top: ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL) | IXGBE_CTRL_RST; IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); IXGBE_WRITE_FLUSH(hw); + usleep_range(1000, 1200); /* Poll for reset bit to self-clear indicating reset is complete */ for (i = 0; i < 10; i++) { - udelay(1); ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); if (!(ctrl & IXGBE_CTRL_RST)) break; + udelay(1); } if (ctrl & IXGBE_CTRL_RST) { status = IXGBE_ERR_RESET_FAILED; |