Messages in this thread | | | Date | Tue, 10 Dec 2013 08:38:55 +0100 | From | Hans-Christian Egtvedt <> | Subject | Re: [PATCH] ALSA: atmel_abdac: clk_round_rate() can return a zero upon error |
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Around Mon 09 Dec 2013 18:49:13 -0800 or thereabout, Paul Walmsley wrote: > > Treat both negative and zero return values from clk_round_rate() > as errors. This is needed since subsequent patches will convert > clk_round_rate()'s return value to be an unsigned type, rather > than a signed type, since some clock sources can generate rates higher > than (2^31)-1 Hz. > > Eventually, when calling clk_round_rate(), only a return value of > zero will be considered a error; all other values will be > considered valid rates. The comparison against values less than > 0 is kept to preserve the correct behavior in the meantime. > > Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com> > Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> > Cc: Nicolas Ferre <nicolas.ferre@atmel.com> > Cc: Takashi Iwai <tiwai@suse.de> > Cc: Jaroslav Kysela <perex@perex.cz>
Thanks for fixing.
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
> --- > Applies on v3.13-rc3. See also: > > http://marc.info/?l=linux-arm-kernel&m=138542591313620&w=2 > > sound/atmel/abdac.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/sound/atmel/abdac.c b/sound/atmel/abdac.c > index 721d8fd..3519518 100644 > --- a/sound/atmel/abdac.c > +++ b/sound/atmel/abdac.c > @@ -354,7 +354,7 @@ static int set_sample_rates(struct atmel_abdac *dac) > /* we start at 192 kHz and work our way down to 5112 Hz */ > while (new_rate >= RATE_MIN && index < (MAX_NUM_RATES + 1)) { > new_rate = clk_round_rate(dac->sample_clk, 256 * new_rate); > - if (new_rate < 0) > + if (new_rate <= 0) > break; > /* make sure we are below the ABDAC clock */ > if (index < MAX_NUM_RATES && >
-- mvh Hans-Christian Egtvedt
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