diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-02-13 11:23:08 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-02-22 14:51:11 -0500 |
| commit | b6603036ad87244bd39ed7bc0612009df7694f5e (patch) | |
| tree | 80a8f9a672a5ee41ea4f3ac5d1490fa2b7ac579d | |
| parent | 3fccdcf5091eaaa0d7582bedbc035163b40714b9 (diff) | |
| download | blackbird-op-linux-b6603036ad87244bd39ed7bc0612009df7694f5e.tar.gz blackbird-op-linux-b6603036ad87244bd39ed7bc0612009df7694f5e.zip | |
iwlegacy: dump stack when fail to gain access to the device
Print dump stack when the device is not responding. This should give
some more clue about the reason of failure. Also change the message we
print, since "MAC in deep sleep" is kinda confusing.
On the way add unlikely(), as fail to gain NIC access is hmm ...
unlikely.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/iwlegacy/common.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlegacy/common.c b/drivers/net/wireless/iwlegacy/common.c index 04ec38e5eaaf..3900967a79f6 100644 --- a/drivers/net/wireless/iwlegacy/common.c +++ b/drivers/net/wireless/iwlegacy/common.c @@ -111,9 +111,10 @@ _il_grab_nic_access(struct il_priv *il) _il_poll_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN, (CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY | CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP), 15000); - if (ret < 0) { + if (unlikely(ret < 0)) { val = _il_rd(il, CSR_GP_CNTRL); - IL_ERR("MAC is in deep sleep!. CSR_GP_CNTRL = 0x%08X\n", val); + WARN_ONCE(1, "Timeout waiting for ucode processor access " + "(CSR_GP_CNTRL 0x%08x)\n", val); _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_FORCE_NMI); return -EIO; } |
