[PATCH v1 3/5] gpio: xilinx: Switch to use new bitmap_scatter() helper

Andy Shevchenko
2023-09-26T05:20:46Z

bitmaps_scatter() produces a sparse bitmap based on the dense one
and a given mask. In this driver the given mask is hw_map, while
sw_map is of sequential bits. We may use the bitmap_scatter() helper
instead of bitmap_remap(), because it's optimized for our case.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/gpio/gpio-xilinx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index a16945e8319e..f103c30cc74f 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -208,8 +208,8 @@ static void xgpio_set_multiple(struct gpio_chip *gc, unsigned long *mask,
unsigned long flags;
struct xgpio_instance *chip = gpiochip_get_data(gc);

- bitmap_remap(hw_mask, mask, chip->sw_map, chip->hw_map, 64);
- bitmap_remap(hw_bits, bits, chip->sw_map, chip->hw_map, 64);
+ bitmap_scatter(hw_mask, mask, chip->hw_map, 64);
+ bitmap_scatter(hw_bits, bits, chip->hw_map, 64);

spin_lock_irqsave(&chip->gpio_lock, flags);

--
2.40.0.1.gaa8946217a0b