Re: [PATCHv2] staging: dwc2: Fix code that gets the nummber of host channels

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Hi Matthijs,

On 10/1/13 6:08 AM, Matthijs Kooijman wrote:
Hi Dinh,

Somehow I assumed that was fixed by the hardware, but I see now that you
are right.  Yes, making the definition larger is better than moving the
+ 1.
This was my original fix to the problem, but I thought that it would
be confusing when reading the code. I also thought about the "+1"
for host_channels was strange too. For debug outputs, it would be
more accurate to display 16 channels, in code-wise, I see that
host_channels is used in 2 for loops. Does it make sense to just fix
the for loops to include channels 0-15?
I think that fixing this in the places where the value is used is moving
the complexity the wrong way. Not sure if I'm understanding you
correctly, thoguh.
[resend]: previous reply didn't include Matthijs

-               for (i = 0; i < num_channels; i++) {
+               for (i = 0; i <= num_channels; i++) {

That way, host_channels is correct at 4 bits. Just a thought..

Dinh, do you want to do that?  The other option is that Matthijs could
fix it and give you the Reported-by credit.
I'm fine with that, if Matthijs wants to submit the fix. I can test
it on my hardware too.
I'll prepare a patch in a few hours. Would be great if you could test,
since my hardware only has a meagre 4 host channels ;-)

Sure, thanks...

Dinh

Gr.

Matthijs

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