From: Lars-Peter Clausen <lars@metafoo.de>
To: Jonathan Cameron <jic23@cam.ac.uk>
Cc: linux-iio@vger.kernel.org, Lars-Peter Clausen <lars@metafoo.de>
Subject: [PATCH 01/15] staging:iio:adis16400: Don't pass 0 to ilog2
Date: Wed, 16 Jan 2013 13:48:37 +0100 [thread overview]
Message-ID: <1358340531-31350-1-git-send-email-lars@metafoo.de> (raw)
ilog2 is not defined for 0, so we need to handle the case where the requested
frequency is larger than the base sampling rate. In this case we'll round down
and set the sampling rate to the base sampling rate.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
---
drivers/staging/iio/imu/adis16400_core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c
index 9c8f5ab..cb66225 100644
--- a/drivers/staging/iio/imu/adis16400_core.c
+++ b/drivers/staging/iio/imu/adis16400_core.c
@@ -178,7 +178,11 @@ static int adis16334_set_freq(struct iio_dev *indio_dev, unsigned int freq)
{
unsigned int t;
- t = ilog2(8192 / (freq * 10));
+ freq *= 10;
+ if (freq < 8192)
+ t = ilog2(8192 / freq);
+ else
+ t = 0;
if (t > 0x31)
t = 0x31;
--
1.8.0
next reply other threads:[~2013-01-16 12:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-16 12:48 Lars-Peter Clausen [this message]
2013-01-16 12:48 ` [PATCH 02/15] staging:iio:adis16400: Fix and cleanup 3db filter setting Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 03/15] staging:iio:adis16400: Remove unused default_scan_mask Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 04/15] staging:iio:adis16400: Use adis library Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 05/15] staging:iio:adis16400: Use triggered buffer setup helper function Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 06/15] staging:iio:adis16400: Add helper macros for channel declaration Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 07/15] staging:iio:adis16400: Preallocate transfer message Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 08/15] staging:iio:adis16400: Remove unit suffix from samplerate attribute Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 09/15] staging:iio:adis16400: Remove samplerate_available attribute Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 10/15] staging:iio:adis16400: Code style cleanup Lars-Peter Clausen
2013-01-16 12:58 ` Jonathan Cameron
2013-01-16 13:11 ` Lars-Peter Clausen
2013-01-16 13:57 ` Manuel Stahl
2013-01-16 14:07 ` Lars-Peter Clausen
2013-01-16 14:09 ` Manuel Stahl
2013-01-16 18:34 ` Jonathan Cameron
2013-01-17 9:18 ` Manuel Stahl
2013-01-16 12:48 ` [PATCH 11/15] staging:iio: Move adis16400 out of staging Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 12/15] iio:adis16400: Increase samplerate precession Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 13/15] iio:adis16400: Add support for the 52.85 Hz base sampling rate Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 14/15] iio:adis16400: Expose some debug information in debugfs Lars-Peter Clausen
2013-01-16 12:48 ` [PATCH 15/15] iio:adis16400: Add support for the adis16448 Lars-Peter Clausen
2013-01-19 13:50 ` [PATCH 01/15] staging:iio:adis16400: Don't pass 0 to ilog2 Jonathan Cameron
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