diff options
| author | Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> | 2018-12-07 13:10:15 +0200 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2019-02-06 10:35:03 -0800 |
| commit | 8144e1e8cacf30b74e331120edc368270b0ec1c0 (patch) | |
| tree | 0c88627945c3b596f1ea7306a6a8c80864316a5d /drivers/clk/clk-max77686.c | |
| parent | 3eee6c7d119cd8563ad25898f94d6c1b514da548 (diff) | |
| download | linux-8144e1e8cacf30b74e331120edc368270b0ec1c0.tar.bz2 | |
clk: clk-max77686: Clean clkdev lookup leak and use devm
clk-max77686 never clean clkdev lookup at remove. This can cause
oops if clk-max77686 is removed and inserted again. Fix leak by
using new devm clkdev lookup registration. Simplify also error
path by using new devm_of_clk_add_hw_provider.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/clk-max77686.c')
| -rw-r--r-- | drivers/clk/clk-max77686.c | 28 |
1 files changed, 6 insertions, 22 deletions
diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c index 22c937644c93..3727d5472450 100644 --- a/drivers/clk/clk-max77686.c +++ b/drivers/clk/clk-max77686.c @@ -235,8 +235,9 @@ static int max77686_clk_probe(struct platform_device *pdev) return ret; } - ret = clk_hw_register_clkdev(&max_clk_data->hw, - max_clk_data->clk_idata.name, NULL); + ret = devm_clk_hw_register_clkdev(dev, &max_clk_data->hw, + max_clk_data->clk_idata.name, + NULL); if (ret < 0) { dev_err(dev, "Failed to clkdev register: %d\n", ret); return ret; @@ -244,8 +245,8 @@ static int max77686_clk_probe(struct platform_device *pdev) } if (parent->of_node) { - ret = of_clk_add_hw_provider(parent->of_node, of_clk_max77686_get, - drv_data); + ret = devm_of_clk_add_hw_provider(dev, of_clk_max77686_get, + drv_data); if (ret < 0) { dev_err(dev, "Failed to register OF clock provider: %d\n", @@ -261,27 +262,11 @@ static int max77686_clk_probe(struct platform_device *pdev) 1 << MAX77802_CLOCK_LOW_JITTER_SHIFT); if (ret < 0) { dev_err(dev, "Failed to config low-jitter: %d\n", ret); - goto remove_of_clk_provider; + return ret; } } return 0; - -remove_of_clk_provider: - if (parent->of_node) - of_clk_del_provider(parent->of_node); - - return ret; -} - -static int max77686_clk_remove(struct platform_device *pdev) -{ - struct device *parent = pdev->dev.parent; - - if (parent->of_node) - of_clk_del_provider(parent->of_node); - - return 0; } static const struct platform_device_id max77686_clk_id[] = { @@ -297,7 +282,6 @@ static struct platform_driver max77686_clk_driver = { .name = "max77686-clk", }, .probe = max77686_clk_probe, - .remove = max77686_clk_remove, .id_table = max77686_clk_id, }; |