From: Michal Nazarewicz Date: Sun, 10 Nov 2013 19:06:37 +0000 (+0100) Subject: iwlwifi: pcie: remove minor dead code X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=84c317c9b09f757b4c4a4fb38549ac54d1559419;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git iwlwifi: pcie: remove minor dead code 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 [reword the patch title and fix comment] Signed-off-by: Emmanuel Grumbach --- diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index be3995afa9d0..1d6bf7b98e2d 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -1126,7 +1126,6 @@ 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); @@ -1155,7 +1154,16 @@ 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, but only in case the handler won't run. Note that + * the handler can be scheduled because of a previous + * interrupt. + */ + 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)) { @@ -1173,19 +1181,7 @@ 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