diff options
| author | John W. Linville <linville@tuxdriver.com> | 2012-12-11 16:03:03 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-12-11 16:03:03 -0500 |
| commit | ecbbec2eb093d2ef205de371af986f0360fca539 (patch) | |
| tree | 57ab3b0c684f957aee568230fadb32995e00da6b /drivers/net/wireless/iwlwifi/pcie/rx.c | |
| parent | 36b07d15a656b657beaf9e6357a341768192fad2 (diff) | |
| parent | 25a172655f837bdb032e451f95441bb4acec51bb (diff) | |
Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/rx.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/pcie/rx.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index bb32510fdd6..dad4c4aad91 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -717,7 +717,7 @@ static void iwl_pcie_rx_handle(struct iwl_trans *trans) /* uCode's read index (stored in shared DRAM) indicates the last Rx * buffer that the driver may process (last buffer filled by ucode). */ - r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF; + r = le16_to_cpu(ACCESS_ONCE(rxq->rb_stts->closed_rb_num)) & 0x0FFF; i = rxq->read; /* Rx interrupt, but nothing sent from uCode */ @@ -1122,12 +1122,20 @@ static irqreturn_t iwl_pcie_isr(int irq, void *data) * back-to-back ISRs and sporadic interrupts from our NIC. * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ - inta_mask = iwl_read32(trans, CSR_INT_MASK); /* just for debug */ + inta_mask = iwl_read32(trans, CSR_INT_MASK); iwl_write32(trans, CSR_INT_MASK, 0x00000000); /* Discover which interrupts are active/pending */ inta = iwl_read32(trans, CSR_INT); + if (inta & (~inta_mask)) { + IWL_DEBUG_ISR(trans, + "We got a masked interrupt (0x%08x)...Ack and ignore\n", + inta & (~inta_mask)); + iwl_write32(trans, CSR_INT, inta & (~inta_mask)); + inta &= inta_mask; + } + /* Ignore interrupt if there's nothing in NIC to service. * This may be due to IRQ shared with another device, * or due to sporadic interrupts thrown from our NIC. */ @@ -1209,7 +1217,7 @@ irqreturn_t iwl_pcie_isr_ict(int irq, void *data) * If we have something to service, the tasklet will re-enable ints. * If we *don't* have something, we'll re-enable before leaving here. */ - inta_mask = iwl_read32(trans, CSR_INT_MASK); /* just for debug */ + inta_mask = iwl_read32(trans, CSR_INT_MASK); iwl_write32(trans, CSR_INT_MASK, 0x00000000); /* Ignore interrupt if there's nothing in NIC to service. |