diff options
Diffstat (limited to 'hw/net/cadence_gem.c')
| -rw-r--r-- | hw/net/cadence_gem.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index a66a9cc922..e1962e1fe7 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -509,7 +509,18 @@ static void gem_update_int_status(CadenceGEMState *s) { int i; - if ((s->num_priority_queues == 1) && s->regs[GEM_ISR]) { + if (!s->regs[GEM_ISR]) { + /* ISR isn't set, clear all the interrupts */ + for (i = 0; i < s->num_priority_queues; ++i) { + qemu_set_irq(s->irq[i], 0); + } + return; + } + + /* If we get here we know s->regs[GEM_ISR] is set, so we don't need to + * check it again. + */ + if (s->num_priority_queues == 1) { /* No priority queues, just trigger the interrupt */ DB_PRINT("asserting int.\n"); qemu_set_irq(s->irq[0], 1); @@ -1274,7 +1285,6 @@ static uint64_t gem_read(void *opaque, hwaddr offset, unsigned size) { CadenceGEMState *s; uint32_t retval; - int i; s = (CadenceGEMState *)opaque; offset >>= 2; @@ -1285,9 +1295,7 @@ static uint64_t gem_read(void *opaque, hwaddr offset, unsigned size) switch (offset) { case GEM_ISR: DB_PRINT("lowering irqs on ISR read\n"); - for (i = 0; i < s->num_priority_queues; ++i) { - qemu_set_irq(s->irq[i], 0); - } + /* The interrupts get updated at the end of the function. */ break; case GEM_PHYMNTNC: if (retval & GEM_PHYMNTNC_OP_R) { |