inta is checked to be zero in a IRQ_NONE branch so afterwards it cannot be zero as it is never modified.
Signed-off-by: Michal Nazarewicz <[email protected]> --- drivers/net/wireless/iwlwifi/pcie/rx.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) On Mon, Nov 11 2013, Johannes Berg wrote: > no signed-off-by Sorry, fixed. Interestingly, I did not forget about it in my first patch. diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index 3f237b4..7d0fdc0 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -1121,7 +1121,6 @@ static irqreturn_t iwl_pcie_isr(int irq, void *data) struct iwl_trans *trans = data; struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); u32 inta, inta_mask; - irqreturn_t ret = IRQ_NONE; lockdep_assert_held(&trans_pcie->irq_lock); @@ -1150,7 +1149,14 @@ static irqreturn_t iwl_pcie_isr(int irq, void *data) * or due to sporadic interrupts thrown from our NIC. */ if (!inta) { IWL_DEBUG_ISR(trans, "Ignore interrupt, inta == 0\n"); - goto none; + /* re-enable interrupts here since we don't have anything to + * service. only Re-enable if disabled by irq and no + * schedules tasklet. + */ + if (test_bit(STATUS_INT_ENABLED, &trans_pcie->status) && + !trans_pcie->inta) + iwl_enable_interrupts(trans); + return IRQ_NONE; } if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) { @@ -1168,19 +1174,7 @@ static irqreturn_t iwl_pcie_isr(int irq, void *data) trans_pcie->inta |= inta; /* the thread will service interrupts and re-enable them */ - if (likely(inta)) - return IRQ_WAKE_THREAD; - - ret = IRQ_HANDLED; - -none: - /* re-enable interrupts here since we don't have anything to service. */ - /* only Re-enable if disabled by irq and no schedules tasklet. */ - if (test_bit(STATUS_INT_ENABLED, &trans_pcie->status) && - !trans_pcie->inta) - iwl_enable_interrupts(trans); - - return ret; + return IRQ_WAKE_THREAD; } /* interrupt handler using ict table, with this interrupt driver will -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
