netdev - [PATCH net-next v2 4/7] net: ipa: pass a platform device to ipa_mem

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Message-Id: <20240301170242.243703-5-elder@linaro.org>
Date: Fri,  1 Mar 2024 11:02:39 -0600
From: Alex Elder <elder@...aro.org>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: horms@...nel.org,
	mka@...omium.org,
	andersson@...nel.org,
	quic_cpratapa@...cinc.com,
	quic_avuyyuru@...cinc.com,
	quic_jponduru@...cinc.com,
	quic_subashab@...cinc.com,
	elder@...nel.org,
	netdev@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next v2 4/7] net: ipa: pass a platform device to ipa_mem_init()

Rather than using the platform device pointer field in the IPA
pointer, pass a platform device pointer to ipa_mem_init().  Use
that pointer throughout that function.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_main.c |  2 +-
 drivers/net/ipa/ipa_mem.c  | 13 +++++++------
 drivers/net/ipa/ipa_mem.h  |  5 ++++-
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 5c9c1b0ef8de5..17ee075370ce6 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -870,7 +870,7 @@ static int ipa_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_kfree_ipa;
 
-	ret = ipa_mem_init(ipa, data->mem_data);
+	ret = ipa_mem_init(ipa, pdev, data->mem_data);
 	if (ret)
 		goto err_reg_exit;
 
diff --git a/drivers/net/ipa/ipa_mem.c b/drivers/net/ipa/ipa_mem.c
index 694960537ecda..d7df7d340221d 100644
--- a/drivers/net/ipa/ipa_mem.c
+++ b/drivers/net/ipa/ipa_mem.c
@@ -9,6 +9,7 @@
 #include <linux/bug.h>
 #include <linux/dma-mapping.h>
 #include <linux/iommu.h>
+#include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/soc/qcom/smem.h>
 
@@ -75,9 +76,9 @@ ipa_mem_zero_region_add(struct gsi_trans *trans, enum ipa_mem_id mem_id)
 int ipa_mem_setup(struct ipa *ipa)
 {
 	dma_addr_t addr = ipa->zero_addr;
-	const struct reg *reg;
 	const struct ipa_mem *mem;
 	struct gsi_trans *trans;
+	const struct reg *reg;
 	u32 offset;
 	u16 size;
 	u32 val;
@@ -615,9 +616,10 @@ static void ipa_smem_exit(struct ipa *ipa)
 }
 
 /* Perform memory region-related initialization */
-int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
+int ipa_mem_init(struct ipa *ipa, struct platform_device *pdev,
+		 const struct ipa_mem_data *mem_data)
 {
-	struct device *dev = &ipa->pdev->dev;
+	struct device *dev = &pdev->dev;
 	struct resource *res;
 	int ret;
 
@@ -634,14 +636,13 @@ int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data)
 	if (!ipa_table_mem_valid(ipa, true))
 		return -EINVAL;
 
-	ret = dma_set_mask_and_coherent(&ipa->pdev->dev, DMA_BIT_MASK(64));
+	ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
 	if (ret) {
 		dev_err(dev, "error %d setting DMA mask\n", ret);
 		return ret;
 	}
 
-	res = platform_get_resource_byname(ipa->pdev, IORESOURCE_MEM,
-					   "ipa-shared");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ipa-shared");
 	if (!res) {
 		dev_err(dev,
 			"DT error getting \"ipa-shared\" memory property\n");
diff --git a/drivers/net/ipa/ipa_mem.h b/drivers/net/ipa/ipa_mem.h
index 868e9c20e8c41..28aad00a151da 100644
--- a/drivers/net/ipa/ipa_mem.h
+++ b/drivers/net/ipa/ipa_mem.h
@@ -6,6 +6,8 @@
 #ifndef _IPA_MEM_H_
 #define _IPA_MEM_H_
 
+struct platform_device;
+
 struct ipa;
 struct ipa_mem_data;
 
@@ -100,7 +102,8 @@ int ipa_mem_setup(struct ipa *ipa);	/* No ipa_mem_teardown() needed */
 
 int ipa_mem_zero_modem(struct ipa *ipa);
 
-int ipa_mem_init(struct ipa *ipa, const struct ipa_mem_data *mem_data);
+int ipa_mem_init(struct ipa *ipa, struct platform_device *pdev,
+		 const struct ipa_mem_data *mem_data);
 void ipa_mem_exit(struct ipa *ipa);
 
 #endif /* _IPA_MEM_H_ */
-- 
2.40.1