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Diffstat (limited to 'arch/mips/alchemy/devboards/bcsr.c')
-rw-r--r--arch/mips/alchemy/devboards/bcsr.c11
1 files changed, 2 insertions, 9 deletions
diff --git a/arch/mips/alchemy/devboards/bcsr.c b/arch/mips/alchemy/devboards/bcsr.c
index 463d2c4d944..1e83ce2e114 100644
--- a/arch/mips/alchemy/devboards/bcsr.c
+++ b/arch/mips/alchemy/devboards/bcsr.c
@@ -97,14 +97,9 @@ static void bcsr_csc_handler(unsigned int irq, struct irq_desc *d)
enable_irq(irq);
}
-/* NOTE: both the enable and mask bits must be cleared, otherwise the
- * CPLD generates tons of spurious interrupts (at least on my DB1200).
- * -- mlau
- */
static void bcsr_irq_mask(struct irq_data *d)
{
unsigned short v = 1 << (d->irq - bcsr_csc_base);
- __raw_writew(v, bcsr_virt + BCSR_REG_INTCLR);
__raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR);
wmb();
}
@@ -112,7 +107,6 @@ static void bcsr_irq_mask(struct irq_data *d)
static void bcsr_irq_maskack(struct irq_data *d)
{
unsigned short v = 1 << (d->irq - bcsr_csc_base);
- __raw_writew(v, bcsr_virt + BCSR_REG_INTCLR);
__raw_writew(v, bcsr_virt + BCSR_REG_MASKCLR);
__raw_writew(v, bcsr_virt + BCSR_REG_INTSTAT); /* ack */
wmb();
@@ -121,7 +115,6 @@ static void bcsr_irq_maskack(struct irq_data *d)
static void bcsr_irq_unmask(struct irq_data *d)
{
unsigned short v = 1 << (d->irq - bcsr_csc_base);
- __raw_writew(v, bcsr_virt + BCSR_REG_INTSET);
__raw_writew(v, bcsr_virt + BCSR_REG_MASKSET);
wmb();
}
@@ -137,9 +130,9 @@ void __init bcsr_init_irq(int csc_start, int csc_end, int hook_irq)
{
unsigned int irq;
- /* mask & disable & ack all */
- __raw_writew(0xffff, bcsr_virt + BCSR_REG_INTCLR);
+ /* mask & enable & ack all */
__raw_writew(0xffff, bcsr_virt + BCSR_REG_MASKCLR);
+ __raw_writew(0xffff, bcsr_virt + BCSR_REG_INTSET);
__raw_writew(0xffff, bcsr_virt + BCSR_REG_INTSTAT);
wmb();