diff options
| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2009-10-05 06:34:05 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-06 21:59:21 (GMT) |
| commit | 3272686c98da64d6eeaa2434782f42270b110758 (patch) | |
| tree | 81950a9dfaaa5b446fd3deccd1a31d7f12843b7b /drivers/net/igb/e1000_mbx.c | |
| parent | 0acb6fde5fc84009be1c7efc0aaa8e69e394a2e2 (diff) | |
| download | linux-3272686c98da64d6eeaa2434782f42270b110758.tar.xz | |
igb: fix a few items where weren't correctly setup for mbx timeout
The mailbox timeout routines need to be updated as they were not correctly
handling the case of a mailbox timeout and could cause issues with long
delays when used.
Signed-off-by: Alexander Duyck <alexander.h.duyck@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/igb/e1000_mbx.c')
| -rw-r--r-- | drivers/net/igb/e1000_mbx.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/net/igb/e1000_mbx.c b/drivers/net/igb/e1000_mbx.c index ef645f6..c474cdb 100644 --- a/drivers/net/igb/e1000_mbx.c +++ b/drivers/net/igb/e1000_mbx.c @@ -143,12 +143,16 @@ static s32 igb_poll_for_msg(struct e1000_hw *hw, u16 mbx_id) if (!countdown || !mbx->ops.check_for_msg) goto out; - while (mbx->ops.check_for_msg(hw, mbx_id)) { + while (countdown && mbx->ops.check_for_msg(hw, mbx_id)) { countdown--; if (!countdown) break; udelay(mbx->usec_delay); } + + /* if we failed, all future posted messages fail until reset */ + if (!countdown) + mbx->timeout = 0; out: return countdown ? 0 : -E1000_ERR_MBX; } @@ -168,12 +172,16 @@ static s32 igb_poll_for_ack(struct e1000_hw *hw, u16 mbx_id) if (!countdown || !mbx->ops.check_for_ack) goto out; - while (mbx->ops.check_for_ack(hw, mbx_id)) { + while (countdown && mbx->ops.check_for_ack(hw, mbx_id)) { countdown--; if (!countdown) break; udelay(mbx->usec_delay); } + + /* if we failed, all future posted messages fail until reset */ + if (!countdown) + mbx->timeout = 0; out: return countdown ? 0 : -E1000_ERR_MBX; } @@ -217,12 +225,13 @@ out: static s32 igb_write_posted_mbx(struct e1000_hw *hw, u32 *msg, u16 size, u16 mbx_id) { struct e1000_mbx_info *mbx = &hw->mbx; - s32 ret_val = 0; + s32 ret_val = -E1000_ERR_MBX; - if (!mbx->ops.write) + /* exit if either we can't write or there isn't a defined timeout */ + if (!mbx->ops.write || !mbx->timeout) goto out; - /* send msg*/ + /* send msg */ ret_val = mbx->ops.write(hw, msg, size, mbx_id); /* if msg sent wait until we receive an ack */ |