linux-kernel - [PATCH net-next 3/6] net: ipa: use version in gsi_channel

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Message-Id: <20201102175400.6282-4-elder@linaro.org>
Date:   Mon,  2 Nov 2020 11:53:57 -0600
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     evgreen@...omium.org, subashab@...eaurora.org,
        cpratapa@...eaurora.org, bjorn.andersson@...aro.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 3/6] net: ipa: use version in gsi_channel_init()

A quirk of IPA v4.2 requires the AP to allocate the GSI channels
that are owned by the modem.

Rather than pass a flag argument to gsi_channel_init(), use the
IPA version directly in that function to determine whether modem
channels need to be allocated.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/gsi.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index 178d6ec2699eb..eae8ed83c1004 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -1894,12 +1894,15 @@ static void gsi_channel_exit_one(struct gsi_channel *channel)
 
 /* Init function for channels */
 static int gsi_channel_init(struct gsi *gsi, u32 count,
-			    const struct ipa_gsi_endpoint_data *data,
-			    bool modem_alloc)
+			    const struct ipa_gsi_endpoint_data *data)
 {
+	bool modem_alloc;
 	int ret = 0;
 	u32 i;
 
+	/* IPA v4.2 requires the AP to allocate channels for the modem */
+	modem_alloc = gsi->version == IPA_VERSION_4_2;
+
 	gsi_evt_ring_init(gsi);
 
 	/* The endpoint data array is indexed by endpoint name */
@@ -1961,14 +1964,10 @@ int gsi_init(struct gsi *gsi, struct platform_device *pdev,
 	struct resource *res;
 	resource_size_t size;
 	unsigned int irq;
-	bool modem_alloc;
 	int ret;
 
 	gsi_validate_build();
 
-	/* IPA v4.2 requires the AP to allocate channels for the modem */
-	modem_alloc = version == IPA_VERSION_4_2;
-
 	gsi->dev = dev;
 	gsi->version = version;
 
@@ -2014,7 +2013,7 @@ int gsi_init(struct gsi *gsi, struct platform_device *pdev,
 		goto err_free_irq;
 	}
 
-	ret = gsi_channel_init(gsi, count, data, modem_alloc);
+	ret = gsi_channel_init(gsi, count, data);
 	if (ret)
 		goto err_iounmap;
 
-- 
2.20.1