iio: adc: ad7091r8: Constify struct regmap_bus

`ad7091r8_regmap_bus` is not modified and can be declared as const to
move its data to a read-only section.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Marcelo Schmitt <marcelo.schmitt@analog.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20240703-iio-cont-regmap_bus-v1-4-34754f355b65@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad7091r8.c b/drivers/iio/adc/ad7091r8.c
index 70056430505752682f5fd2c3b2e56ef1db48c7b7..c9e014d6a77cae2844e20cfee53bef25075d91c0 100644 (file)
--- a/drivers/iio/adc/ad7091r8.c
+++ b/drivers/iio/adc/ad7091r8.c
@@ -159,7 +159,7 @@ static int ad7091r_regmap_bus_reg_write(void *context, unsigned int reg,
        return spi_write(spi, &st->tx_buf, 2);
 }
 
-static struct regmap_bus ad7091r8_regmap_bus = {
+static const struct regmap_bus ad7091r8_regmap_bus = {
        .reg_read = ad7091r_regmap_bus_reg_read,
        .reg_write = ad7091r_regmap_bus_reg_write,
        .reg_format_endian_default = REGMAP_ENDIAN_BIG,