netdev - Re: [PATCH] ucc_geth: fix ucc halt problem in half duplex mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Sun, 28 Nov 2010 18:37:26 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	leoli@...escale.com
Cc:	linuxppc-dev@...ts.ozlabs.org, netdev@...r.kernel.org,
	jdboyer@...ia5corp.com, Andreas.Schmitz@...del.net,
	avorontsov@...mvista.com
Subject: Re: [PATCH] ucc_geth: fix ucc halt problem in half duplex mode

From: Li Yang <leoli@...escale.com>
Date: Fri, 26 Nov 2010 17:29:58 +0800

> In commit 58933c64(ucc_geth: Fix the wrong the Rx/Tx FIFO size),
> the UCC_GETH_UTFTT_INIT is set to 512 based on the recommendation
> of the QE Reference Manual.  But that will sometimes cause tx halt
> while working in half duplex mode.
> 
> According to errata draft QE_GENERAL-A003(High Tx Virtual FIFO
> threshold size can cause UCC to halt), setting UTFTT less than
> [(UTFS x (M - 8)/M) - 128] will prevent this from happening
> (M is the minimum buffer size).
> 
> The patch changes UTFTT back to 256.
> 
> Signed-off-by: Li Yang <leoli@...escale.com>
> Cc: Jean-Denis Boyer <jdboyer@...ia5corp.com>
> Cc: Andreas Schmitz <Andreas.Schmitz@...del.net>
> Cc: Anton Vorontsov <avorontsov@...mvista.com>

Applied, thank you.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html