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| author | Philipp Zabel <p.zabel@pengutronix.de> | 2017-03-15 12:31:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-17 14:17:12 +0900 |
| commit | acbdad8dd1abd98b216d8c37ff9c6de4aa595534 (patch) | |
| tree | 229dc98e8a3d305d0ff079725d0b68ddcf30dd5c /drivers/tty/serial/8250/8250_dw.c | |
| parent | 22077b091a4720d4336bd806e9c93b2a81fcc38a (diff) | |
| download | linux-stable-acbdad8dd1abd98b216d8c37ff9c6de4aa595534.tar.gz linux-stable-acbdad8dd1abd98b216d8c37ff9c6de4aa595534.tar.bz2 linux-stable-acbdad8dd1abd98b216d8c37ff9c6de4aa595534.zip | |
serial: 8250_dw: simplify optional reset handling
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>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250/8250_dw.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 6ee55a2d47bb..e0215db44e6e 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -525,12 +525,11 @@ static int dw8250_probe(struct platform_device *pdev) } data->rst = devm_reset_control_get_optional(dev, NULL); - if (IS_ERR(data->rst) && PTR_ERR(data->rst) == -EPROBE_DEFER) { - err = -EPROBE_DEFER; + if (IS_ERR(data->rst)) { + err = PTR_ERR(data->rst); goto err_pclk; } - if (!IS_ERR(data->rst)) - reset_control_deassert(data->rst); + reset_control_deassert(data->rst); dw8250_quirks(p, data); @@ -562,8 +561,7 @@ static int dw8250_probe(struct platform_device *pdev) return 0; err_reset: - if (!IS_ERR(data->rst)) - reset_control_assert(data->rst); + reset_control_assert(data->rst); err_pclk: if (!IS_ERR(data->pclk)) @@ -584,8 +582,7 @@ static int dw8250_remove(struct platform_device *pdev) serial8250_unregister_port(data->line); - if (!IS_ERR(data->rst)) - reset_control_assert(data->rst); + reset_control_assert(data->rst); if (!IS_ERR(data->pclk)) clk_disable_unprepare(data->pclk); |