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SubjectRe: [PATCH] rt2x00: rt2800: fix zeroing skb structure
On Wed, Aug 03, 2011 at 01:44:10PM -0400, Justin Piszcz wrote:
> Tested that patch:
>
> 1. The driver no longer automatically loads, I had to manually modprobe it.
This must be some other problem not related with patch.

> 2. After loading, I get this (keep getting these)
>
> [ 384.054538] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.072773] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.096545] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.117301] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.537586] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.555716] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.573903] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.599465] phy0 -> rt2800_txdone: Error - Data pending
> [ 384.618523] phy0 -> rt2800_txdone: Error - Data pending
You can remove line

ERROR(rt2x00dev, "Data pending\n");

from rt2800_txdone to stop seeing this. It's kinda interesting
how frequent this happens.

> No crash yet, but bad ping again too (always with the rt2800usb) driver:
>
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=1 ttl=64 time=53.1 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=2 ttl=64 time=285 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=3 ttl=64 time=89.6 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=4 ttl=64 time=120 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=5 ttl=64 time=42.2 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=6 ttl=64 time=156 ms
> 64 bytes from atomw.internal.lan (192.168.0.2): icmp_req=7 ttl=64 time=77.2 ms

I think patch could have site effect to not run tx queue while we have pending
data on it. Do you have such ping times always (i.e. after a 5 minutes, 10
minutes, 20 ... ) or just randomly?

Stanislaw


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