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<
cambrian_invader>
marex: it gets cast to ulong
<
cambrian_invader>
not really ideal; this is kinda a surprising interface for this reason
<
cambrian_invader>
it may be better to return 0 like Linux?
<
cambrian_invader>
idk
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<
marex>
cambrian_invader: ulong is unsigned, so hard to return -ve, right ?
<
cambrian_invader>
it's pretty easy
<
cambrian_invader>
`return -EINVAL` etc.
<
cambrian_invader>
for the checking part you have to use IS_ERR_VAL
<
marex>
cambrian_invader: maybe we should change it to signed integer ? But yeah, that could have other side effects, sigh
<
cambrian_invader>
yeah, I'm not looking forward to breaking X board which has a 3 GHz clock
<
cambrian_invader>
so the only real alternative is to return 0 in cases of error
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<
marex>
cambrian_invader: what does Linux do anyway ?
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<
cambrian_invader>
marex: return 0
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<
marex>
cambrian_invader: it is somewhat hard to demux errors that way
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<
cambrian_invader>
marex: yeah; I guess the real issue is that most error handling looks like "if (err) return err"
<
cambrian_invader>
so does it matter? idk
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<
marex>
cambrian_invader: so it is, hum
<
cambrian_invader>
the other thing is that half the drivers return 0 rate when the clock is off
<
cambrian_invader>
because it was not properly documented what should happen in that case
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