Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH v2 1/3] mux: gpio: Use bitmap API instead of direct assignment | Date | Tue, 30 Mar 2021 22:33:23 +0300 |
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Assigning bitmaps like it's done in the driver might be error prone. Fix this by using bitmap API.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Peter Rosin <peda@axentia.se> --- v2: left blank line untouched (Peter) drivers/mux/gpio.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mux/gpio.c b/drivers/mux/gpio.c index 02c1f2c014e8..d1b4aa923657 100644 --- a/drivers/mux/gpio.c +++ b/drivers/mux/gpio.c @@ -7,6 +7,7 @@ * Author: Peter Rosin <peda@axentia.se> */ +#include <linux/bitmap.h> #include <linux/err.h> #include <linux/gpio/consumer.h> #include <linux/module.h> @@ -23,8 +24,9 @@ static int mux_gpio_set(struct mux_control *mux, int state) { struct mux_gpio *mux_gpio = mux_chip_priv(mux->chip); DECLARE_BITMAP(values, BITS_PER_TYPE(state)); + u32 value = state; - values[0] = state; + bitmap_from_arr32(values, &value, BITS_PER_TYPE(value)); gpiod_set_array_value_cansleep(mux_gpio->gpios->ndescs, mux_gpio->gpios->desc, @@ -71,7 +73,7 @@ static int mux_gpio_probe(struct platform_device *pdev) return ret; } WARN_ON(pins != mux_gpio->gpios->ndescs); - mux_chip->mux->states = 1 << pins; + mux_chip->mux->states = BIT(pins); ret = device_property_read_u32(dev, "idle-state", (u32 *)&idle_state); if (ret >= 0 && idle_state != MUX_IDLE_AS_IS) { -- 2.30.2
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