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Subject[PATCH 02/14] i2c: mv64xxx: simplify optional reset handling
Date
As of commit bb475230b8e5 ("reset: make optional functions really
optional"), the reset framework API calls use NULL pointers to describe
optional, non-present reset controls.

This allows to return errors from devm_reset_control_get_optional and to
call reset_control_(de)assert unconditionally.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
---
drivers/i2c/busses/i2c-mv64xxx.c | 15 +++++----------
1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index b4dec0841bc27..1e3f2db3ebd5a 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -823,13 +823,10 @@ mv64xxx_of_config(struct mv64xxx_i2c_data *drv_data,

drv_data->rstc = devm_reset_control_get_optional(dev, NULL);
if (IS_ERR(drv_data->rstc)) {
- if (PTR_ERR(drv_data->rstc) == -EPROBE_DEFER) {
- rc = -EPROBE_DEFER;
- goto out;
- }
- } else {
- reset_control_deassert(drv_data->rstc);
+ rc = PTR_ERR(drv_data->rstc);
+ goto out;
}
+ reset_control_deassert(drv_data->rstc);

/* Its not yet defined how timeouts will be specified in device tree.
* So hard code the value to 1 second.
@@ -951,8 +948,7 @@ mv64xxx_i2c_probe(struct platform_device *pd)
exit_free_irq:
free_irq(drv_data->irq, drv_data);
exit_reset:
- if (!IS_ERR_OR_NULL(drv_data->rstc))
- reset_control_assert(drv_data->rstc);
+ reset_control_assert(drv_data->rstc);
exit_clk:
/* Not all platforms have a clk */
if (!IS_ERR(drv_data->clk))
@@ -968,8 +964,7 @@ mv64xxx_i2c_remove(struct platform_device *dev)

i2c_del_adapter(&drv_data->adapter);
free_irq(drv_data->irq, drv_data);
- if (!IS_ERR_OR_NULL(drv_data->rstc))
- reset_control_assert(drv_data->rstc);
+ reset_control_assert(drv_data->rstc);
/* Not all platforms have a clk */
if (!IS_ERR(drv_data->clk))
clk_disable_unprepare(drv_data->clk);
--
2.11.0
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