devm_clk_get_optional() and clk_prepare_enable() can be replaced by helper
function devm_clk_get_optional_enabled(). Let's simplify code with use of
devm_clk_get_optional_enabled() and avoid calling clk_disable_unprepare().
Signed-off-by: Zhang Zekun <zhangzekun11@xxxxxxxxxx>
---
v2: Fix mistakes in commit message.
drivers/i2c/busses/i2c-mpc.c | 23 ++++-------------------
1 file changed, 4 insertions(+), 19 deletions(-)
diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c
index 41d6c8ed163a..236d6b8ba867 100644
--- a/drivers/i2c/busses/i2c-mpc.c
+++ b/drivers/i2c/busses/i2c-mpc.c
@@ -88,7 +88,6 @@ struct mpc_i2c {
int irq;
u32 real_clk;
u8 fdr, dfsrr;
- struct clk *clk_per;
u32 cntl_bits;
enum mpc_i2c_action action;
struct i2c_msg *msgs;
@@ -779,7 +778,6 @@ static int fsl_i2c_probe(struct platform_device *op)
struct clk *clk;
int result;
u32 clock;
- int err;
i2c = devm_kzalloc(&op->dev, sizeof(*i2c), GFP_KERNEL);
if (!i2c)
@@ -809,18 +807,12 @@ static int fsl_i2c_probe(struct platform_device *op)
* enable clock for the I2C peripheral (non fatal),
* keep a reference upon successful allocation
*/
- clk = devm_clk_get_optional(&op->dev, NULL);
- if (IS_ERR(clk))
- return PTR_ERR(clk);
-
- err = clk_prepare_enable(clk);
- if (err) {
+ clk = devm_clk_get_optional_enabled(&op->dev, NULL);
+ if (IS_ERR(clk)) {
dev_err(&op->dev, "failed to enable clock\n");
- return err;
+ return PTR_ERR(clk);
}
- i2c->clk_per = clk;
-
if (of_property_read_bool(op->dev.of_node, "fsl,preserve-clocking")) {
clock = MPC_I2C_CLOCK_PRESERVE;
} else {
@@ -876,14 +868,9 @@ static int fsl_i2c_probe(struct platform_device *op)
result = i2c_add_numbered_adapter(&i2c->adap);
if (result)
- goto fail_add;
+ return result;
return 0;
-
- fail_add:
- clk_disable_unprepare(i2c->clk_per);
-
- return result;
};
static void fsl_i2c_remove(struct platform_device *op)
@@ -891,8 +878,6 @@ static void fsl_i2c_remove(struct platform_device *op)
struct mpc_i2c *i2c = platform_get_drvdata(op);
i2c_del_adapter(&i2c->adap);
-
- clk_disable_unprepare(i2c->clk_per);
};
static int __maybe_unused mpc_i2c_suspend(struct device *dev)
--
2.17.1
