ALSA: at73c213: clk_round_rate() can return a zero upon error
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>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/spi/at73c213.c b/sound/spi/at73c213.c
index 8e3d9a6..25c38af 100644
--- a/sound/spi/at73c213.c
+++ b/sound/spi/at73c213.c
@@ -174,7 +174,7 @@
dac_rate_new = 8 * (ssc_rate / ssc_div);
status = clk_round_rate(chip->board->dac_clk, dac_rate_new);
- if (status < 0)
+ if (status <= 0)
return status;
/* Ignore difference smaller than 256 Hz. */