Messages in this thread | | | Date | Tue, 10 Dec 2013 08:39:46 +0100 | From | Hans-Christian Egtvedt <> | Subject | Re: [PATCH] avr32: favr-32: clk_round_rate() can return a zero upon error |
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Around Mon 09 Dec 2013 18:35:24 -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 <paul@pwsan.com> > Cc: Nicolas Ferre <nicolas.ferre@atmel.com> > Cc: Håvard Skinnemoen <hskinnemoen@gmail.com> > Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> > Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Thanks for fixing, applied to for-linus branch in git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32.git
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 > > arch/avr32/boards/favr-32/setup.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/arch/avr32/boards/favr-32/setup.c b/arch/avr32/boards/favr-32/setup.c > index 7b1f2cd85400..1f121497b517 100644 > --- a/arch/avr32/boards/favr-32/setup.c > +++ b/arch/avr32/boards/favr-32/setup.c > @@ -298,8 +298,10 @@ static int __init set_abdac_rate(struct platform_device *pdev) > */ > retval = clk_round_rate(pll1, > CONFIG_BOARD_FAVR32_ABDAC_RATE * 256 * 16); > - if (retval < 0) > + if (retval <= 0) { > + retval = -EINVAL; > goto out_abdac; > + } > > retval = clk_set_rate(pll1, retval); > if (retval != 0)
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