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From: Baolin Wang <baolin.wang7@gmail.com>
To: ohad@wizery.com, bjorn.andersson@linaro.org
Cc: baolin.wang7@gmail.com, linux-omap@vger.kernel.org,
	linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH RESEND 1/3] hwspinlock: omap: Change to use devm_platform_ioremap_resource()
Date: Wed,  8 Jan 2020 11:13:59 +0800	[thread overview]
Message-ID: <6c09c5034a7e68fdfc22d2cb5daa375bccb33a66.1578453062.git.baolin.wang7@gmail.com> (raw)
In-Reply-To: <cover.1578453062.git.baolin.wang7@gmail.com>
In-Reply-To: <cover.1578453062.git.baolin.wang7@gmail.com>

Use the new helper that wraps the calls to platform_get_resource()
and devm_ioremap_resource() together, which can simpify the code.
Meanwhile renaming the error label to make more sense after removing
iounmap().

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
 drivers/hwspinlock/omap_hwspinlock.c |   24 ++++++++----------------
 1 file changed, 8 insertions(+), 16 deletions(-)

diff --git a/drivers/hwspinlock/omap_hwspinlock.c b/drivers/hwspinlock/omap_hwspinlock.c
index 14e1a53..dbb1a4c 100644
--- a/drivers/hwspinlock/omap_hwspinlock.c
+++ b/drivers/hwspinlock/omap_hwspinlock.c
@@ -76,7 +76,6 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	struct device_node *node = pdev->dev.of_node;
 	struct hwspinlock_device *bank;
 	struct hwspinlock *hwlock;
-	struct resource *res;
 	void __iomem *io_base;
 	int num_locks, i, ret;
 	/* Only a single hwspinlock block device is supported */
@@ -85,13 +84,9 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	if (!node)
 		return -ENODEV;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
-	io_base = ioremap(res->start, resource_size(res));
-	if (!io_base)
-		return -ENOMEM;
+	io_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(io_base))
+		return PTR_ERR(io_base);
 
 	/*
 	 * make sure the module is enabled and clocked before reading
@@ -101,7 +96,7 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0) {
 		pm_runtime_put_noidle(&pdev->dev);
-		goto iounmap_base;
+		goto runtime_err;
 	}
 
 	/* Determine number of locks */
@@ -114,12 +109,12 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	 */
 	ret = pm_runtime_put(&pdev->dev);
 	if (ret < 0)
-		goto iounmap_base;
+		goto runtime_err;
 
 	/* one of the four lsb's must be set, and nothing else */
 	if (hweight_long(i & 0xf) != 1 || i > 8) {
 		ret = -EINVAL;
-		goto iounmap_base;
+		goto runtime_err;
 	}
 
 	num_locks = i * 32; /* actual number of locks in this device */
@@ -127,7 +122,7 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 	bank = kzalloc(struct_size(bank, lock, num_locks), GFP_KERNEL);
 	if (!bank) {
 		ret = -ENOMEM;
-		goto iounmap_base;
+		goto runtime_err;
 	}
 
 	platform_set_drvdata(pdev, bank);
@@ -147,16 +142,14 @@ static int omap_hwspinlock_probe(struct platform_device *pdev)
 
 reg_fail:
 	kfree(bank);
-iounmap_base:
+runtime_err:
 	pm_runtime_disable(&pdev->dev);
-	iounmap(io_base);
 	return ret;
 }
 
 static int omap_hwspinlock_remove(struct platform_device *pdev)
 {
 	struct hwspinlock_device *bank = platform_get_drvdata(pdev);
-	void __iomem *io_base = bank->lock[0].priv - LOCK_BASE_OFFSET;
 	int ret;
 
 	ret = hwspin_lock_unregister(bank);
@@ -166,7 +159,6 @@ static int omap_hwspinlock_remove(struct platform_device *pdev)
 	}
 
 	pm_runtime_disable(&pdev->dev);
-	iounmap(io_base);
 	kfree(bank);
 
 	return 0;
-- 
1.7.9.5

  reply	other threads:[~2020-01-08  3:13 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-08  3:13 [PATCH RESEND 0/3] Some improvements for OMAP hwspinlock Baolin Wang
2020-01-08  3:13 ` Baolin Wang [this message]
2020-01-08  3:14 ` [PATCH RESEND 2/3] hwspinlock: omap: Use devm_kzalloc() to allocate memory Baolin Wang
2020-01-08  3:14 ` [PATCH RESEND 3/3] hwspinlock: omap: Use devm_hwspin_lock_register() to register hwlock controller Baolin Wang
2020-01-22  0:15   ` Bjorn Andersson
2020-01-22  0:15     ` Bjorn Andersson
2020-01-25  4:10     ` Baolin Wang
2020-01-22  0:15 ` [PATCH RESEND 0/3] Some improvements for OMAP hwspinlock Bjorn Andersson
2020-01-22  0:16   ` Bjorn Andersson

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