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path: root/drivers/reset/reset-lpc18xx.c
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Diffstat (limited to 'drivers/reset/reset-lpc18xx.c')
-rw-r--r--drivers/reset/reset-lpc18xx.c49
1 files changed, 11 insertions, 38 deletions
diff --git a/drivers/reset/reset-lpc18xx.c b/drivers/reset/reset-lpc18xx.c
index 35d8dd4cccfc..e42b2f24a93d 100644
--- a/drivers/reset/reset-lpc18xx.c
+++ b/drivers/reset/reset-lpc18xx.c
@@ -139,7 +139,6 @@ static const struct reset_control_ops lpc18xx_rgu_ops = {
static int lpc18xx_rgu_probe(struct platform_device *pdev)
{
struct lpc18xx_rgu_data *rc;
- struct resource *res;
u32 fcclk, firc;
int ret;
@@ -147,34 +146,19 @@ static int lpc18xx_rgu_probe(struct platform_device *pdev)
if (!rc)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- rc->base = devm_ioremap_resource(&pdev->dev, res);
+ rc->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(rc->base))
return PTR_ERR(rc->base);
- rc->clk_reg = devm_clk_get(&pdev->dev, "reg");
- if (IS_ERR(rc->clk_reg)) {
- dev_err(&pdev->dev, "reg clock not found\n");
- return PTR_ERR(rc->clk_reg);
- }
-
- rc->clk_delay = devm_clk_get(&pdev->dev, "delay");
- if (IS_ERR(rc->clk_delay)) {
- dev_err(&pdev->dev, "delay clock not found\n");
- return PTR_ERR(rc->clk_delay);
- }
+ rc->clk_reg = devm_clk_get_enabled(&pdev->dev, "reg");
+ if (IS_ERR(rc->clk_reg))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rc->clk_reg),
+ "reg clock not found\n");
- ret = clk_prepare_enable(rc->clk_reg);
- if (ret) {
- dev_err(&pdev->dev, "unable to enable reg clock\n");
- return ret;
- }
-
- ret = clk_prepare_enable(rc->clk_delay);
- if (ret) {
- dev_err(&pdev->dev, "unable to enable delay clock\n");
- goto dis_clk_reg;
- }
+ rc->clk_delay = devm_clk_get_enabled(&pdev->dev, "delay");
+ if (IS_ERR(rc->clk_delay))
+ return dev_err_probe(&pdev->dev, PTR_ERR(rc->clk_delay),
+ "delay clock not found\n");
fcclk = clk_get_rate(rc->clk_reg) / USEC_PER_SEC;
firc = clk_get_rate(rc->clk_delay) / USEC_PER_SEC;
@@ -190,13 +174,9 @@ static int lpc18xx_rgu_probe(struct platform_device *pdev)
rc->rcdev.ops = &lpc18xx_rgu_ops;
rc->rcdev.of_node = pdev->dev.of_node;
- platform_set_drvdata(pdev, rc);
-
ret = reset_controller_register(&rc->rcdev);
- if (ret) {
- dev_err(&pdev->dev, "unable to register device\n");
- goto dis_clks;
- }
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret, "unable to register device\n");
rc->restart_nb.priority = 192,
rc->restart_nb.notifier_call = lpc18xx_rgu_restart,
@@ -205,13 +185,6 @@ static int lpc18xx_rgu_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "failed to register restart handler\n");
return 0;
-
-dis_clks:
- clk_disable_unprepare(rc->clk_delay);
-dis_clk_reg:
- clk_disable_unprepare(rc->clk_reg);
-
- return ret;
}
static const struct of_device_id lpc18xx_rgu_match[] = {