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clk: max77686: Remove unnecessary NULL checking for container_of()

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container_of() never returns NULL, thus remove the NULL checking for it.
Also rename get_max77686_clk() to to_max77686_clk() for better readability.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Axel Lin 2012-12-18 15:54:52 +08:00 • committed by Mike Turquette
parent bddca8944a
commit 3fe296cf5a
1 changed files with 7 additions and 21 deletions
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28
drivers/clk/clk-max77686.c
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@ -44,33 +44,23 @@ struct max77686_clk {
struct clk_lookup *lookup; struct clk_lookup *lookup;
}; };
static struct max77686_clk *get_max77686_clk(struct clk_hw *hw) static struct max77686_clk *to_max77686_clk(struct clk_hw *hw)
{ {
return container_of(hw, struct max77686_clk, hw); return container_of(hw, struct max77686_clk, hw);
} }
static int max77686_clk_prepare(struct clk_hw *hw) static int max77686_clk_prepare(struct clk_hw *hw)
{ {
struct max77686_clk *max77686; struct max77686_clk *max77686 = to_max77686_clk(hw);
int ret;
max77686 = get_max77686_clk(hw); return regmap_update_bits(max77686->iodev->regmap,
if (!max77686) MAX77686_REG_32KHZ, max77686->mask,
return -ENOMEM; max77686->mask);
ret = regmap_update_bits(max77686->iodev->regmap,
MAX77686_REG_32KHZ, max77686->mask, max77686->mask);
return ret;
} }
static void max77686_clk_unprepare(struct clk_hw *hw) static void max77686_clk_unprepare(struct clk_hw *hw)
{ {
struct max77686_clk *max77686; struct max77686_clk *max77686 = to_max77686_clk(hw);
max77686 = get_max77686_clk(hw);
if (!max77686)
return;
regmap_update_bits(max77686->iodev->regmap, regmap_update_bits(max77686->iodev->regmap,
MAX77686_REG_32KHZ, max77686->mask, ~max77686->mask); MAX77686_REG_32KHZ, max77686->mask, ~max77686->mask);
@ -78,14 +68,10 @@ static void max77686_clk_unprepare(struct clk_hw *hw)
static int max77686_clk_is_enabled(struct clk_hw *hw) static int max77686_clk_is_enabled(struct clk_hw *hw)
{ {
struct max77686_clk *max77686; struct max77686_clk *max77686 = to_max77686_clk(hw);
int ret; int ret;
u32 val; u32 val;
max77686 = get_max77686_clk(hw);
if (!max77686)
return -ENOMEM;
ret = regmap_read(max77686->iodev->regmap, ret = regmap_read(max77686->iodev->regmap,
MAX77686_REG_32KHZ, &val); MAX77686_REG_32KHZ, &val);