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tsnep: Fix NAPI scheduling

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[ Upstream commit ea852c17f5382a0a52041cfbd9a4451ae0fa1a38 ]

According to the NAPI documentation networking/napi.rst, drivers which
have to mask interrupts explicitly should use the napi_schedule_prep()
and __napi_schedule() calls.

No problem seen so far with current implementation. Nevertheless, let's
align the implementation with documentation.

Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gerhard Engleder 2023-09-15 23:01:24 +02:00 committed by Greg Kroah-Hartman
parent b09c1359e4
commit 78ac1e7dec
1 changed files with 10 additions and 4 deletions
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14
drivers/net/ethernet/engleder/tsnep_main.c
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@ -65,8 +65,11 @@ static irqreturn_t tsnep_irq(int irq, void *arg)
/* handle TX/RX queue 0 interrupt */
if ((active & adapter->queue[0].irq_mask) != 0) {
tsnep_disable_irq(adapter, adapter->queue[0].irq_mask);
napi_schedule(&adapter->queue[0].napi);
if (napi_schedule_prep(&adapter->queue[0].napi)) {
tsnep_disable_irq(adapter, adapter->queue[0].irq_mask);
/* schedule after masking to avoid races */
__napi_schedule(&adapter->queue[0].napi);
}
}
return IRQ_HANDLED;
@ -77,8 +80,11 @@ static irqreturn_t tsnep_irq_txrx(int irq, void *arg)
struct tsnep_queue *queue = arg;
/* handle TX/RX queue interrupt */
tsnep_disable_irq(queue->adapter, queue->irq_mask);
napi_schedule(&queue->napi);
if (napi_schedule_prep(&queue->napi)) {
tsnep_disable_irq(queue->adapter, queue->irq_mask);
/* schedule after masking to avoid races */
__napi_schedule(&queue->napi);
}
return IRQ_HANDLED;
}