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From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, kuba@kernel.org
Cc: bjorn.andersson@linaro.org, evgreen@chromium.org,
	cpratapa@codeaurora.org, subashab@codeaurora.org,
	elder@kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next 4/6] net: ipa: have gsi_irq_setup() return an error code
Date: Tue,  3 Aug 2021 09:01:01 -0500	[thread overview]
Message-ID: <20210803140103.1012697-5-elder@linaro.org> (raw)
In-Reply-To: <20210803140103.1012697-1-elder@linaro.org>

Change gsi_irq_setup() so it returns an error value, and introduce
gsi_irq_teardown() as its inverse.  Set the interrupt type (IRQ
rather than MSI) in gsi_irq_setup().

Signed-off-by: Alex Elder <elder@linaro.org>
---
 drivers/net/ipa/gsi.c | 32 +++++++++++++++++++++++++-------
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index a5d23a2837cb6..be069d7c4feb9 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -1807,9 +1807,12 @@ static void gsi_channel_teardown(struct gsi *gsi)
 	gsi_irq_disable(gsi);
 }
 
-/* Turn off all GSI interrupts initially; there is no gsi_irq_teardown() */
-static void gsi_irq_setup(struct gsi *gsi)
+/* Turn off all GSI interrupts initially */
+static int gsi_irq_setup(struct gsi *gsi)
 {
+	/* Writing 1 indicates IRQ interrupts; 0 would be MSI */
+	iowrite32(1, gsi->virt + GSI_CNTXT_INTSET_OFFSET);
+
 	/* Disable all interrupt types */
 	gsi_irq_type_update(gsi, 0);
 
@@ -1831,6 +1834,12 @@ static void gsi_irq_setup(struct gsi *gsi)
 	}
 
 	iowrite32(0, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
+
+	return 0;
+}
+
+static void gsi_irq_teardown(struct gsi *gsi)
+{
 }
 
 /* Get # supported channel and event rings; there is no gsi_ring_teardown() */
@@ -1891,25 +1900,34 @@ int gsi_setup(struct gsi *gsi)
 		return -EIO;
 	}
 
-	gsi_irq_setup(gsi);		/* No matching teardown required */
+	ret = gsi_irq_setup(gsi);
+	if (ret)
+		return ret;
 
 	ret = gsi_ring_setup(gsi);	/* No matching teardown required */
 	if (ret)
-		return ret;
+		goto err_irq_teardown;
 
 	/* Initialize the error log */
 	iowrite32(0, gsi->virt + GSI_ERROR_LOG_OFFSET);
 
-	/* Writing 1 indicates IRQ interrupts; 0 would be MSI */
-	iowrite32(1, gsi->virt + GSI_CNTXT_INTSET_OFFSET);
+	ret = gsi_channel_setup(gsi);
+	if (ret)
+		goto err_irq_teardown;
 
-	return gsi_channel_setup(gsi);
+	return 0;
+
+err_irq_teardown:
+	gsi_irq_teardown(gsi);
+
+	return ret;
 }
 
 /* Inverse of gsi_setup() */
 void gsi_teardown(struct gsi *gsi)
 {
 	gsi_channel_teardown(gsi);
+	gsi_irq_teardown(gsi);
 }
 
 /* Initialize a channel's event ring */
-- 
2.27.0


  parent reply	other threads:[~2021-08-03 14:01 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-03 14:00 [PATCH net-next 0/6] net: ipa: prepare GSI interrupts for runtime PM Alex Elder
2021-08-03 14:00 ` [PATCH net-next 1/6] net: ipa: use gsi->version for channel suspend/resume Alex Elder
2021-08-03 14:00 ` [PATCH net-next 2/6] net: ipa: move version check " Alex Elder
2021-08-03 14:01 ` [PATCH net-next 3/6] net: ipa: move some GSI setup functions Alex Elder
2021-08-03 14:01 ` Alex Elder [this message]
2021-08-03 14:01 ` [PATCH net-next 5/6] net: ipa: move gsi_irq_init() code into setup Alex Elder
2021-08-03 14:01 ` [PATCH net-next 6/6] net: ipa: disable GSI interrupts while suspended Alex Elder
2021-08-04  9:40 ` [PATCH net-next 0/6] net: ipa: prepare GSI interrupts for runtime PM patchwork-bot+netdevbpf

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