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net: ipa: disable IEOB interrupts before clearing 

Currently in gsi_isr_ieob(), event ring IEOB interrupts are disabled
one at a time.  The loop disables the IEOB interrupt for all event
rings represented in the event mask.  Instead, just disable them all
at once.

Disable them all *before* clearing the interrupt condition.  This
guarantees we'll schedule NAPI for each event once, before another
IEOB interrupt could be signaled.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Alex Elder 2021-01-21 05:48:21 -06:00 committed by Jakub Kicinski
parent 5725593e6f
commit 7bd9785f68
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ipa/gsi.c
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@ -1205,6 +1205,7 @@ static void gsi_isr_ieob(struct gsi *gsi)
u32 event_mask;
event_mask = ioread32(gsi->virt + GSI_CNTXT_SRC_IEOB_IRQ_OFFSET);
gsi_irq_ieob_disable(gsi, event_mask);
iowrite32(event_mask, gsi->virt + GSI_CNTXT_SRC_IEOB_IRQ_CLR_OFFSET);
while (event_mask) {
@ -1212,7 +1213,6 @@ static void gsi_isr_ieob(struct gsi *gsi)
event_mask ^= BIT(evt_ring_id);
gsi_irq_ieob_disable_one(gsi, evt_ring_id);
napi_schedule(&gsi->evt_ring[evt_ring_id].channel->napi);
}
}