diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-02-13 11:23:24 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-02-22 14:51:16 -0500 |
| commit | 775ed8abde9420afc955ca7540aacdce721be6c1 (patch) | |
| tree | 7ff55b22f75b9d694382514f6d59c490f5d1df1c /drivers/net/wireless/iwlegacy/3945-mac.c | |
| parent | c37281a076604937ec2403f3cfec71362f93c7d8 (diff) | |
| download | blackbird-obmc-linux-775ed8abde9420afc955ca7540aacdce721be6c1.tar.gz blackbird-obmc-linux-775ed8abde9420afc955ca7540aacdce721be6c1.zip | |
iwlegacy: do not grab nic access if rfkill
If rfkill is on il_grab_nic_access() fail and we can not write to the
various registers during stop procedure. Write to those registers
unconditionally instead.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlegacy/3945-mac.c')
| -rw-r--r-- | drivers/net/wireless/iwlegacy/3945-mac.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c index 002cf4fd5a55..ee91ab2e3858 100644 --- a/drivers/net/wireless/iwlegacy/3945-mac.c +++ b/drivers/net/wireless/iwlegacy/3945-mac.c @@ -2286,16 +2286,25 @@ __il3945_down(struct il_priv *il) test_bit(S_FW_ERROR, &il->status) << S_FW_ERROR | test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING; + /* + * We disabled and synchronized interrupt, and priv->mutex is taken, so + * here is the only thread which will program device registers, but + * still have lockdep assertions, so we are taking reg_lock. + */ + spin_lock_irq(&il->reg_lock); + /* FIXME: il_grab_nic_access if rfkill is off ? */ + il3945_hw_txq_ctx_stop(il); il3945_hw_rxq_stop(il); - /* Power-down device's busmaster DMA clocks */ - il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); + _il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); udelay(5); - /* Stop the device, and put it in low power state */ - il_apm_stop(il); + _il_apm_stop(il); + spin_unlock_irq(&il->reg_lock); + + il3945_hw_txq_ctx_free(il); exit: memset(&il->card_alive, 0, sizeof(struct il_alive_resp)); |
