From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] building enc28j60 for omap3: undefined references
Date: Thu, 17 Feb 2011 13:37:27 +0100 [thread overview]
Message-ID: <4D5D1687.3000900@denx.de> (raw)
In-Reply-To: <20110217114851.5b679230@BlackBox>
On 02/17/2011 11:48 AM, jacopo mondi wrote:
> GOSH, I've exactly searched through the code for CONFIG_CMD_NET, but I
> did not noticed was an undef statment instead of a define!
> Everything's fine now. Thank you.
Your're welcome.
>
> Just another question. I've studied the linux enc28j60 driver and
> noticed it features an interrupt driven work flow.
> No interrupt are used in u-boot version (for what I've seen).
That is correct. As u-boot is a bootloader and no os, everything can be
done in a single task and polling is used when it is needed.
> Is it
> based on some sort of polling instead of interrupt? Isn't
> that dangerous? I mean, if there are no data available everything is
> going to freeze..
It seems to me that the driver goes out from receive function when no
data are available. pkn_cnt is read directly from HW, and if the
controller is not broken, it will not return any packets and the loop
ends up.
Best regards,
Stefano Babic
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next prev parent reply other threads:[~2011-02-17 12:37 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-16 16:29 [U-Boot] building enc28j60 for omap3: undefined references jacopo mondi
2011-02-16 17:31 ` Reinhard Meyer
2011-02-17 5:48 ` Mike Frysinger
2011-02-17 9:35 ` jacopo mondi
2011-02-17 10:09 ` Stefano Babic
2011-02-17 10:48 ` jacopo mondi
2011-02-17 12:37 ` Stefano Babic [this message]
2011-02-18 13:12 ` jacopo mondi
2011-02-22 16:34 ` [U-Boot] building enc28j60 for omap3: SILICON ERRATA jacopo mondi
2011-02-23 22:32 ` Anatolij Gustschin
2011-02-23 23:32 ` Wolfgang Denk
2011-02-25 8:37 ` jacopo mondi
2011-03-02 14:08 ` [U-Boot] building enc28j60 for omap3: (omap3_spi rxtx) jacopo mondi
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