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From: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
To: "linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Cc: Igor Mitsyanko <igor.mitsyanko.os@quantenna.com>,
	Andrey Shevchenko <ashevchenko@quantenna.com>,
	Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Subject: [PATCH 2/7] qtnfmac: fix legacy PCIe interrupt handling
Date: Wed, 9 Jan 2019 16:08:56 +0000	[thread overview]
Message-ID: <20190109160843.14832-3-sergey.matyukevich.os@quantenna.com> (raw)
In-Reply-To: <20190109160843.14832-1-sergey.matyukevich.os@quantenna.com>

In the current implementation INTx interrupt is deasserted after the
control path processing. However this leads to missed interrupts
from the wireless card. For instance, this may happen as a result
of control path activity, when another interrupt arrives before
INTx is deasserted.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
---
 drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie.c b/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie.c
index 598edb814421..cbcda57105f3 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/pcie/topaz_pcie.c
@@ -559,6 +559,9 @@ static irqreturn_t qtnf_pcie_topaz_interrupt(int irq, void *data)
 	if (!priv->msi_enabled && !qtnf_topaz_intx_asserted(ts))
 		return IRQ_NONE;
 
+	if (!priv->msi_enabled)
+		qtnf_deassert_intx(ts);
+
 	priv->pcie_irq_count++;
 
 	qtnf_shm_ipc_irq_handler(&priv->shm_ipc_ep_in);
@@ -571,9 +574,6 @@ static irqreturn_t qtnf_pcie_topaz_interrupt(int irq, void *data)
 
 	tasklet_hi_schedule(&priv->reclaim_tq);
 
-	if (!priv->msi_enabled)
-		qtnf_deassert_intx(ts);
-
 	return IRQ_HANDLED;
 }
 
-- 
2.11.0


  parent reply	other threads:[~2019-01-09 16:18 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-09 16:08 [PATCH 0/7] qtnfmac: fixes and minor enhancements Sergey Matyukevich
2019-01-09 16:08 ` [PATCH 1/7] qtnfmac: support EBUSY errcode for QLINK protocol Sergey Matyukevich
2019-01-09 16:08 ` Sergey Matyukevich [this message]
2019-01-09 16:08 ` [PATCH 3/7] qtnfmac: add support for 4addr mode Sergey Matyukevich
2019-01-12 10:54   ` kbuild test robot
2019-01-09 16:09 ` [PATCH 4/7] qtnfmac: switch to 32bit values for RTS/FRAG thresholds Sergey Matyukevich
2019-01-09 16:09 ` [PATCH 5/7] qtnfmac: do not reject retry changes in driver Sergey Matyukevich
2019-01-09 16:09 ` [PATCH 6/7] qtnfmac: convert to SPDX license identifiers Sergey Matyukevich
2019-01-10  7:37   ` Kalle Valo
2019-01-10  8:15     ` Sergey Matyukevich
2019-01-09 16:09 ` [PATCH 7/7] qtnfmac: add missing bss record to host scan cache Sergey Matyukevich

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