diff options
| author | Istvan Varga <istvan_v@mailbox.hu> | 2011-06-03 19:27:30 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-28 00:52:34 +0400 |
| commit | 1368ceb266990af58a72cdb0e121eb4ff22bde6f (patch) | |
| tree | bca06a1b0b6e714b2ea682897f67b472284c9da6 /drivers/media | |
| parent | 5614942bb06f5620d0d6eb67bc0268c76c5dd921 (diff) | |
| download | linux-1368ceb266990af58a72cdb0e121eb4ff22bde6f.tar.xz | |
[media] xc4000: fixed frequency error
The xc_get_frequency_error() function reported the frequency error
incorrectly. The data read from the hardware is a signed integer, in
15625 Hz units. The attached patch fixes the bug.
Signed-off-by: Istvan Varga <istvan_v@mailbox.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/common/tuners/xc4000.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/media/common/tuners/xc4000.c b/drivers/media/common/tuners/xc4000.c index be43a6dfac6c..f50dd6e713f7 100644 --- a/drivers/media/common/tuners/xc4000.c +++ b/drivers/media/common/tuners/xc4000.c @@ -417,8 +417,9 @@ static int xc_get_frequency_error(struct xc4000_priv *priv, u32 *freq_error_hz) if (result != XC_RESULT_SUCCESS) return result; - tmp = (u32)regData; - (*freq_error_hz) = (tmp * 15625) / 1000; + tmp = (u32)regData & 0xFFFFU; + tmp = (tmp < 0x8000U ? tmp : 0x10000U - tmp); + (*freq_error_hz) = tmp * 15625; return result; } |