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authorChristian Eggers <ceggers@arri.de>2020-09-09 17:44:39 +0200
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2020-09-13 10:37:46 +0100
commit23e0618ca0255d12798acd3ae37fd98d0def7070 (patch)
tree5f73ae414813818ae2286e40d361648a10fd325f /drivers/iio/light
parentdde8ceec9e29fe2abf4fabee7d5a0445d0b75b66 (diff)
iio: light: as73211: Increase measurement timeout
We found some sensors which are much slower (20% at room temperature) than nominal. According to the data sheet, up to 27% is possible. Now I add 33% to the nominal time out, hopefully this is enough. Signed-off-by: Christian Eggers <ceggers@arri.de> Link: https://lore.kernel.org/r/20200909154439.10308-1-ceggers@arri.de Fixes: 403e5586b52e ("iio: light: as73211: New driver") Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/light')
-rw-r--r--drivers/iio/light/as73211.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c
index b1178dfc1f65..7b32dfaee9b3 100644
--- a/drivers/iio/light/as73211.c
+++ b/drivers/iio/light/as73211.c
@@ -259,10 +259,9 @@ static int as73211_req_data(struct as73211_data *data)
data->osr &= ~AS73211_OSR_SS;
/*
- * Add some extra margin for the timeout. sensor timing is not as precise
- * as our one ...
+ * Add 33% extra margin for the timeout. fclk,min = fclk,typ - 27%.
*/
- time_us += time_us / 8;
+ time_us += time_us / 3;
if (data->client->irq) {
ret = wait_for_completion_timeout(&data->completion, usecs_to_jiffies(time_us));
if (!ret) {