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Date: Tue, 01 Apr 2014 11:46:01 +0800
From: Axel Lin <axel.lin@...ics.com>
To: Olof Johansson <olof@...om.net>, Arnd Bergmann <arnd@...db.de>
Cc: Santosh Shilimkar <santosh.shilimkar@...com>,
Lokesh Vutla <lokeshvutla@...com>, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] bus: omap_l3_noc: Use devm_* managed allocators
This simplifies error and cleanup code paths.
Also uses of_match_ptr() around of_match_table.
Signed-off-by: Axel Lin <axel.lin@...ics.com>
---
drivers/bus/omap_l3_noc.c | 94 ++++++++++-------------------------------------
1 file changed, 19 insertions(+), 75 deletions(-)
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index feeecae..47b0496 100644
--- a/drivers/bus/omap_l3_noc.c
+++ b/drivers/bus/omap_l3_noc.c
@@ -23,6 +23,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -134,103 +135,49 @@ static int omap4_l3_probe(struct platform_device *pdev)
struct resource *res;
int ret;
- l3 = kzalloc(sizeof(*l3), GFP_KERNEL);
+ l3 = devm_kzalloc(&pdev->dev, sizeof(*l3), GFP_KERNEL);
if (!l3)
return -ENOMEM;
platform_set_drvdata(pdev, l3);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- dev_err(&pdev->dev, "couldn't find resource 0\n");
- ret = -ENODEV;
- goto err0;
- }
- l3->l3_base[0] = ioremap(res->start, resource_size(res));
- if (!l3->l3_base[0]) {
- dev_err(&pdev->dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err0;
- }
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ l3->l3_base[0] = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(l3->l3_base[0]))
+ return PTR_ERR(l3->l3_base[0]);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!res) {
- dev_err(&pdev->dev, "couldn't find resource 1\n");
- ret = -ENODEV;
- goto err1;
- }
-
- l3->l3_base[1] = ioremap(res->start, resource_size(res));
- if (!l3->l3_base[1]) {
- dev_err(&pdev->dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err1;
- }
+ l3->l3_base[1] = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(l3->l3_base[1]))
+ return PTR_ERR(l3->l3_base[1]);
res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
- if (!res) {
- dev_err(&pdev->dev, "couldn't find resource 2\n");
- ret = -ENODEV;
- goto err2;
- }
-
- l3->l3_base[2] = ioremap(res->start, resource_size(res));
- if (!l3->l3_base[2]) {
- dev_err(&pdev->dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto err2;
- }
+ l3->l3_base[2] = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(l3->l3_base[2]))
+ return PTR_ERR(l3->l3_base[2]);
/*
* Setup interrupt Handlers
*/
l3->debug_irq = platform_get_irq(pdev, 0);
- ret = request_irq(l3->debug_irq,
- l3_interrupt_handler,
- IRQF_DISABLED, "l3-dbg-irq", l3);
+ ret = devm_request_irq(&pdev->dev, l3->debug_irq, l3_interrupt_handler,
+ IRQF_DISABLED, "l3-dbg-irq", l3);
if (ret) {
pr_crit("L3: request_irq failed to register for 0x%x\n",
l3->debug_irq);
- goto err3;
+ return ret;
}
l3->app_irq = platform_get_irq(pdev, 1);
- ret = request_irq(l3->app_irq,
- l3_interrupt_handler,
- IRQF_DISABLED, "l3-app-irq", l3);
+ ret = devm_request_irq(&pdev->dev, l3->app_irq, l3_interrupt_handler,
+ IRQF_DISABLED, "l3-app-irq", l3);
if (ret) {
pr_crit("L3: request_irq failed to register for 0x%x\n",
l3->app_irq);
- goto err4;
+ return ret;
}
return 0;
-
-err4:
- free_irq(l3->debug_irq, l3);
-err3:
- iounmap(l3->l3_base[2]);
-err2:
- iounmap(l3->l3_base[1]);
-err1:
- iounmap(l3->l3_base[0]);
-err0:
- kfree(l3);
- return ret;
-}
-
-static int omap4_l3_remove(struct platform_device *pdev)
-{
- struct omap4_l3 *l3 = platform_get_drvdata(pdev);
-
- free_irq(l3->app_irq, l3);
- free_irq(l3->debug_irq, l3);
- iounmap(l3->l3_base[0]);
- iounmap(l3->l3_base[1]);
- iounmap(l3->l3_base[2]);
- kfree(l3);
-
- return 0;
}
#if defined(CONFIG_OF)
@@ -239,17 +186,14 @@ static const struct of_device_id l3_noc_match[] = {
{},
};
MODULE_DEVICE_TABLE(of, l3_noc_match);
-#else
-#define l3_noc_match NULL
#endif
static struct platform_driver omap4_l3_driver = {
.probe = omap4_l3_probe,
- .remove = omap4_l3_remove,
.driver = {
.name = "omap_l3_noc",
.owner = THIS_MODULE,
- .of_match_table = l3_noc_match,
+ .of_match_table = of_match_ptr(l3_noc_match),
},
};
--
1.8.3.2
--
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