From fb2826b7f6ecd93c29d2ef69578f087545251b17 Mon Sep 17 00:00:00 2001 From: Shinya Kuribayashi Date: Sat, 21 Mar 2009 22:04:21 +0900 Subject: [PATCH] MIPS: Mark Eins: Fix cascading interrupt dispatcher * Fix mis-calculated IRQ bitshift on cascading interrupts * Prevent cascading interrupt from being processed afterward Signed-off-by: Shinya Kuribayashi Signed-off-by: Ralf Baechle --- arch/mips/emma/markeins/irq.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/arch/mips/emma/markeins/irq.c b/arch/mips/emma/markeins/irq.c index c2583ecc93cf..263132d7b3a3 100644 --- a/arch/mips/emma/markeins/irq.c +++ b/arch/mips/emma/markeins/irq.c @@ -213,8 +213,7 @@ void emma2rh_irq_dispatch(void) emma2rh_in32(EMMA2RH_BHIF_INT_EN_0); #ifdef EMMA2RH_SW_CASCADE - if (intStatus & - (1 << ((EMMA2RH_SW_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) { + if (intStatus & (1UL << EMMA2RH_SW_CASCADE)) { u32 swIntStatus; swIntStatus = emma2rh_in32(EMMA2RH_BHIF_SW_INT) & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN); @@ -225,6 +224,8 @@ void emma2rh_irq_dispatch(void) } } } + /* Skip S/W interrupt */ + intStatus &= ~(1UL << EMMA2RH_SW_CASCADE); #endif for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) { @@ -238,8 +239,7 @@ void emma2rh_irq_dispatch(void) emma2rh_in32(EMMA2RH_BHIF_INT_EN_1); #ifdef EMMA2RH_GPIO_CASCADE - if (intStatus & - (1 << ((EMMA2RH_GPIO_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) { + if (intStatus & (1UL << (EMMA2RH_GPIO_CASCADE % 32))) { u32 gpioIntStatus; gpioIntStatus = emma2rh_in32(EMMA2RH_GPIO_INT_ST) & emma2rh_in32(EMMA2RH_GPIO_INT_MASK); @@ -250,6 +250,8 @@ void emma2rh_irq_dispatch(void) } } } + /* Skip GPIO interrupt */ + intStatus &= ~(1UL << (EMMA2RH_GPIO_CASCADE % 32)); #endif for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {