From:   Rob Herring <robh@kernel.org>
To:     Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc:     linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH] macintosh: Use of_address_to_resource()
Date:   Sun, 19 Mar 2023 11:32:26 -0500
Message-Id: <20230319163226.226583-1-robh@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Replace open coded reading of "reg" and of_translate_address() calls with
single call to of_address_to_resource().

Signed-off-by: Rob Herring <robh@kernel.org>
---
 drivers/macintosh/via-cuda.c | 16 +++++-----------
 drivers/macintosh/via-pmu.c  | 23 ++++++++---------------
 2 files changed, 13 insertions(+), 26 deletions(-)

diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index 5071289063f0..f8dd1e831530 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -235,8 +235,7 @@ int __init find_via_cuda(void)
 int __init find_via_cuda(void)
 {
     struct adb_request req;
-    phys_addr_t taddr;
-    const u32 *reg;
+    struct resource res;
     int err;
 
     if (vias)
@@ -245,17 +244,12 @@ int __init find_via_cuda(void)
     if (!vias)
 	return 0;
 
-    reg = of_get_property(vias, "reg", NULL);
-    if (reg == NULL) {
-	    printk(KERN_ERR "via-cuda: No \"reg\" property !\n");
-	    goto fail;
-    }
-    taddr = of_translate_address(vias, reg);
-    if (taddr == 0) {
-	    printk(KERN_ERR "via-cuda: Can't translate address !\n");
+    err = of_address_to_resource(vias, 0, &res);
+    if (err) {
+	    printk(KERN_ERR "via-cuda: Error getting \"reg\" property !\n");
 	    goto fail;
     }
-    via = ioremap(taddr, 0x2000);
+    via = ioremap(res.start, 0x2000);
     if (via == NULL) {
 	    printk(KERN_ERR "via-cuda: Can't map address !\n");
 	    goto fail;
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index e0cb8daf4f08..9d5703b60937 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -286,8 +286,9 @@ static char *pbook_type[] = {
 int __init find_via_pmu(void)
 {
 #ifdef CONFIG_PPC_PMAC
+	int err;
 	u64 taddr;
-	const u32 *reg;
+	struct resource res;
 
 	if (pmu_state != uninitialized)
 		return 1;
@@ -295,16 +296,12 @@ int __init find_via_pmu(void)
 	if (vias == NULL)
 		return 0;
 
-	reg = of_get_property(vias, "reg", NULL);
-	if (reg == NULL) {
-		printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
-		goto fail;
-	}
-	taddr = of_translate_address(vias, reg);
-	if (taddr == OF_BAD_ADDR) {
-		printk(KERN_ERR "via-pmu: Can't translate address !\n");
+	err = of_address_to_resource(vias, 0, &res);
+	if (err) {
+		printk(KERN_ERR "via-pmu: Error getting \"reg\" property !\n");
 		goto fail;
 	}
+	taddr = res.start;
 
 	pmu_has_adb = 1;
 
@@ -324,7 +321,6 @@ int __init find_via_pmu(void)
 		 || of_device_is_compatible(vias->parent, "K2-Keylargo")) {
 		struct device_node *gpiop;
 		struct device_node *adbp;
-		u64 gaddr = OF_BAD_ADDR;
 
 		pmu_kind = PMU_KEYLARGO_BASED;
 		adbp = of_find_node_by_type(NULL, "adb");
@@ -338,11 +334,8 @@ int __init find_via_pmu(void)
 		
 		gpiop = of_find_node_by_name(NULL, "gpio");
 		if (gpiop) {
-			reg = of_get_property(gpiop, "reg", NULL);
-			if (reg)
-				gaddr = of_translate_address(gpiop, reg);
-			if (gaddr != OF_BAD_ADDR)
-				gpio_reg = ioremap(gaddr, 0x10);
+			if (!of_address_to_resource(gpiop, 0, &res))
+				gpio_reg = ioremap(res.start, 0x10);
 			of_node_put(gpiop);
 		}
 		if (gpio_reg == NULL) {
-- 
2.39.2