[PATCH v2 2/7] usb: phy: msm: Migrate to Managed Device Resource allocation
From: Ivan T. Ivanov
Date: Tue Jul 09 2013 - 11:48:39 EST
From: "Ivan T. Ivanov" <iivanov@xxxxxxxxxx>
Use managed device resources to clean up the probe/remove
and get DT support for free.
Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx>
---
drivers/usb/phy/phy-msm-usb.c | 78 +++++++++++------------------------------
1 file changed, 20 insertions(+), 58 deletions(-)
diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c
index ab1b880..cc37f5e 100644
--- a/drivers/usb/phy/phy-msm-usb.c
+++ b/drivers/usb/phy/phy-msm-usb.c
@@ -1397,13 +1397,14 @@ static int __init msm_otg_probe(struct platform_device *pdev)
return -ENODEV;
}
- motg = kzalloc(sizeof(struct msm_otg), GFP_KERNEL);
+ motg = devm_kzalloc(&pdev->dev, sizeof(*motg), GFP_KERNEL);
if (!motg) {
dev_err(&pdev->dev, "unable to allocate msm_otg\n");
return -ENOMEM;
}
- motg->phy.otg = kzalloc(sizeof(struct usb_otg), GFP_KERNEL);
+ motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(*motg->phy.otg),
+ GFP_KERNEL);
if (!motg->phy.otg) {
dev_err(&pdev->dev, "unable to allocate msm_otg\n");
return -ENOMEM;
@@ -1413,18 +1414,16 @@ static int __init msm_otg_probe(struct platform_device *pdev)
phy = &motg->phy;
phy->dev = &pdev->dev;
- motg->phy_reset_clk = clk_get(&pdev->dev, "usb_phy_clk");
+ motg->phy_reset_clk = devm_clk_get(&pdev->dev, "usb_phy_clk");
if (IS_ERR(motg->phy_reset_clk)) {
dev_err(&pdev->dev, "failed to get usb_phy_clk\n");
- ret = PTR_ERR(motg->phy_reset_clk);
- goto free_motg;
+ return PTR_ERR(motg->phy_reset_clk);
}
- motg->clk = clk_get(&pdev->dev, "usb_hs_clk");
+ motg->clk = devm_clk_get(&pdev->dev, "usb_hs_clk");
if (IS_ERR(motg->clk)) {
dev_err(&pdev->dev, "failed to get usb_hs_clk\n");
- ret = PTR_ERR(motg->clk);
- goto put_phy_reset_clk;
+ return PTR_ERR(motg->clk);
}
clk_set_rate(motg->clk, 60000000);
@@ -1436,21 +1435,19 @@ static int __init msm_otg_probe(struct platform_device *pdev)
* on pclk source
*/
if (motg->pdata->pclk_src_name) {
- motg->pclk_src = clk_get(&pdev->dev,
+ motg->pclk_src = devm_clk_get(&pdev->dev,
motg->pdata->pclk_src_name);
if (IS_ERR(motg->pclk_src))
- goto put_clk;
+ return PTR_ERR(motg->pclk_src);
clk_set_rate(motg->pclk_src, INT_MAX);
clk_prepare_enable(motg->pclk_src);
} else
motg->pclk_src = ERR_PTR(-ENOENT);
-
- motg->pclk = clk_get(&pdev->dev, "usb_hs_pclk");
+ motg->pclk = devm_clk_get(&pdev->dev, "usb_hs_pclk");
if (IS_ERR(motg->pclk)) {
dev_err(&pdev->dev, "failed to get usb_hs_pclk\n");
- ret = PTR_ERR(motg->pclk);
- goto put_pclk_src;
+ return PTR_ERR(motg->pclk);
}
/*
@@ -1458,30 +1455,27 @@ static int __init msm_otg_probe(struct platform_device *pdev)
* clock is introduced to remove the dependency on AXI
* bus frequency.
*/
- motg->core_clk = clk_get(&pdev->dev, "usb_hs_core_clk");
+ motg->core_clk = devm_clk_get(&pdev->dev, "usb_hs_core_clk");
if (IS_ERR(motg->core_clk))
motg->core_clk = NULL;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get platform resource mem\n");
- ret = -ENODEV;
- goto put_core_clk;
+ return -ENODEV;
}
- motg->regs = ioremap(res->start, resource_size(res));
+ motg->regs = devm_ioremap_resource(&pdev->dev, res);
if (!motg->regs) {
dev_err(&pdev->dev, "ioremap failed\n");
- ret = -ENOMEM;
- goto put_core_clk;
+ return PTR_ERR(motg->regs);
}
dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs);
motg->irq = platform_get_irq(pdev, 0);
- if (!motg->irq) {
+ if (motg->irq < 0) {
dev_err(&pdev->dev, "platform_get_irq failed\n");
- ret = -ENODEV;
- goto free_regs;
+ return motg->irq;
}
clk_prepare_enable(motg->clk);
@@ -1490,7 +1484,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
ret = msm_hsusb_init_vddcx(motg, 1);
if (ret) {
dev_err(&pdev->dev, "hsusb vddcx configuration failed\n");
- goto free_regs;
+ return ret;
}
ret = msm_hsusb_ldo_init(motg, 1);
@@ -1512,7 +1506,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
INIT_WORK(&motg->sm_work, msm_otg_sm_work);
INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work);
- ret = request_irq(motg->irq, msm_otg_irq, IRQF_SHARED,
+ ret = devm_request_irq(&pdev->dev, motg->irq, msm_otg_irq, IRQF_SHARED,
"msm_otg", motg);
if (ret) {
dev_err(&pdev->dev, "request irq failed\n");
@@ -1531,7 +1525,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
ret = usb_add_phy(&motg->phy, USB_PHY_TYPE_USB2);
if (ret) {
dev_err(&pdev->dev, "usb_add_phy failed\n");
- goto free_irq;
+ goto disable_clks;
}
platform_set_drvdata(pdev, motg);
@@ -1549,8 +1543,6 @@ static int __init msm_otg_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
return 0;
-free_irq:
- free_irq(motg->irq, motg);
disable_clks:
clk_disable_unprepare(motg->pclk);
clk_disable_unprepare(motg->clk);
@@ -1558,24 +1550,6 @@ ldo_exit:
msm_hsusb_ldo_init(motg, 0);
vddcx_exit:
msm_hsusb_init_vddcx(motg, 0);
-free_regs:
- iounmap(motg->regs);
-put_core_clk:
- if (motg->core_clk)
- clk_put(motg->core_clk);
- clk_put(motg->pclk);
-put_pclk_src:
- if (!IS_ERR(motg->pclk_src)) {
- clk_disable_unprepare(motg->pclk_src);
- clk_put(motg->pclk_src);
- }
-put_clk:
- clk_put(motg->clk);
-put_phy_reset_clk:
- clk_put(motg->phy_reset_clk);
-free_motg:
- kfree(motg->phy.otg);
- kfree(motg);
return ret;
}
@@ -1598,7 +1572,6 @@ static int msm_otg_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
usb_remove_phy(phy);
- free_irq(motg->irq, motg);
/*
* Put PHY in low power mode.
@@ -1626,18 +1599,7 @@ static int msm_otg_remove(struct platform_device *pdev)
}
msm_hsusb_ldo_init(motg, 0);
- iounmap(motg->regs);
pm_runtime_set_suspended(&pdev->dev);
-
- clk_put(motg->phy_reset_clk);
- clk_put(motg->pclk);
- clk_put(motg->clk);
- if (motg->core_clk)
- clk_put(motg->core_clk);
-
- kfree(motg->phy.otg);
- kfree(motg);
-
return 0;
}
--
1.7.9.5
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