[Qemu-devel] [PATCH 15/15] AHCI: Masking of IRQs actually masks them

[Kevin Wolf <kwolf@redhat.com>]

From: Alexander Graf <agraf@suse.de>

When masking IRQ lines, we should actually mask them out and not declare
them active anymore. Once we mask them in again, they are allowed to trigger
again.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
 hw/ide/ahci.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index caff7bc..f7ef114 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -146,6 +146,7 @@ static void ahci_check_irq(AHCIState *s)
 
     DPRINTF(-1, "check irq %#x\n", s->control_regs.irqstatus);
 
+    s->control_regs.irqstatus = 0;
     for (i = 0; i < s->ports; i++) {
         AHCIPortRegs *pr = &s->dev[i].port_regs;
         if (pr->irq_stat & pr->irq_mask) {
@@ -216,6 +217,7 @@ static void  ahci_port_write(AHCIState *s, int port, int offset, uint32_t val)
             break;
         case PORT_IRQ_STAT:
             pr->irq_stat &= ~val;
+            ahci_check_irq(s);
             break;
         case PORT_IRQ_MASK:
             pr->irq_mask = val & 0xfdc000ff;
-- 
1.7.6.5