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| author | Mitch Williams <mitch.a.williams@intel.com> | 2015-01-09 11:18:13 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-02-08 19:30:29 -0800 |
| commit | 1750a22fa9ec34d3842a78780c838d6bf88fc6b5 (patch) | |
| tree | cc78fffd0cbb09f42e888bda81a88bfe0ab20ab6 /drivers/net | |
| parent | 83840e4bd5a3ae0022e5cdd02bde149338b6b499 (diff) | |
| download | linux-1750a22fa9ec34d3842a78780c838d6bf88fc6b5.tar.bz2 | |
i40e: delay after VF reset
Delay a minimum of 10ms after VF reset, to allow the hardware's internal
FIFOs to flush.
Change-ID: I8a02ddb28c9f0d7303a1eb21d0b2443e5b4c1cda
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c index 044019b9d406..4e4232a58843 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c +++ b/drivers/net/ethernet/intel/i40e/i40e_virtchnl_pf.c @@ -668,13 +668,13 @@ void i40e_reset_vf(struct i40e_vf *vf, bool flr) /* poll VPGEN_VFRSTAT reg to make sure * that reset is complete */ - for (i = 0; i < 100; i++) { - /* vf reset requires driver to first reset the - * vf and then poll the status register to make sure - * that the requested op was completed - * successfully + for (i = 0; i < 10; i++) { + /* VF reset requires driver to first reset the VF and then + * poll the status register to make sure that the reset + * completed successfully. Due to internal HW FIFO flushes, + * we must wait 10ms before the register will be valid. */ - usleep_range(10, 20); + usleep_range(10000, 20000); reg = rd32(hw, I40E_VPGEN_VFRSTAT(vf->vf_id)); if (reg & I40E_VPGEN_VFRSTAT_VFRD_MASK) { rsd = true; |