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mst_fpga: correct irq level settings 

Final corrections for IRQ levels that are set by mst_fpga:

* Don't retranslate IRQ if previously IRQ was masked.
* After setting or clearing IRQs through register, apply mask
  before setting parent IRQ level.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
This commit is contained in:
Dmitry Eremin-Solenikov 2011-02-16 16:22:33 +03:00 committed by Andrzej Zaborowski
parent cf76a1ce8b
commit 3e1dbc3bd4
1 changed files with 2 additions and 2 deletions
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4
hw/mst_fpga.c
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@ -50,7 +50,7 @@ static void
mst_fpga_set_irq(void *opaque, int irq, int level)
{
mst_irq_state *s = (mst_irq_state *)opaque;
uint32_t oldint = s->intsetclr;
uint32_t oldint = s->intsetclr & s->intmskena;
if (level)
s->prev_level |= 1u << irq;
@ -139,7 +139,7 @@ mst_fpga_writeb(void *opaque, target_phys_addr_t addr, uint32_t value)
break;
case MST_INTSETCLR: /* clear or set interrupt */
s->intsetclr = (value & 0xFEEFF);
qemu_set_irq(s->parent, s->intsetclr);
qemu_set_irq(s->parent, s->intsetclr & s->intmskena);
break;
case MST_PCMCIA0:
s->pcmcia0 = value;