With commit 3ba10e37371d ("iio: adis: add burst_max_speed_hz variable"), we
just need to define 'burst_max_speed_hz' and the adis core will take
care of setting up the spi transfers for burst mode. Hence, we fix
a potential race with the spi core where we could be left with an
invalid 'max_speed_hz'.
Reviewed-by: Alexandru Ardelean <ardeleanalex@xxxxxxxxx>
Fixes: fff7352bf7a3c ("iio: imu: Add support for adis16475")
Signed-off-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
---
drivers/iio/imu/adis16475.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c
index 51b76444db0b..5654c0c15426 100644
--- a/drivers/iio/imu/adis16475.c
+++ b/drivers/iio/imu/adis16475.c
@@ -645,7 +645,8 @@ static int adis16475_enable_irq(struct adis *adis, bool enable)
.timeouts = (_timeouts), \
.burst_reg_cmd = ADIS16475_REG_GLOB_CMD, \
.burst_len = ADIS16475_BURST_MAX_DATA, \
- .burst_max_len = ADIS16475_BURST32_MAX_DATA \
+ .burst_max_len = ADIS16475_BURST32_MAX_DATA, \
+ .burst_max_speed_hz = ADIS16475_BURST_MAX_SPEED \
}
static const struct adis16475_sync adis16475_sync_mode[] = {
@@ -1062,15 +1063,11 @@ static irqreturn_t adis16475_trigger_handler(int irq, void *p)
bool valid;
/* offset until the first element after gyro and accel */
const u8 offset = st->burst32 ? 13 : 7;
- const u32 cached_spi_speed_hz = adis->spi->max_speed_hz;
-
- adis->spi->max_speed_hz = ADIS16475_BURST_MAX_SPEED;
ret = spi_sync(adis->spi, &adis->msg);
if (ret)
goto check_burst32;
- adis->spi->max_speed_hz = cached_spi_speed_hz;
buffer = adis->buffer;
crc = be16_to_cpu(buffer[offset + 2]);
--
2.31.1
