From: Paul Gortmaker <paul.gortmaker@windriver.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: gregkh@suse.de, linux-kernel@vger.kernel.org,
linux-serial@vger.kernel.org,
Scott Wood <scottwood@freescale.com>,
linuxppc-dev@lists.ozlabs.org, alan@linux.intel.com
Subject: Re: [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ storm
Date: Fri, 2 Dec 2011 11:34:28 -0500 [thread overview]
Message-ID: <4ED8FE14.7020007@windriver.com> (raw)
In-Reply-To: <20111202113059.15d73840@lxorguk.ukuu.org.uk>
On 11-12-02 06:30 AM, Alan Cox wrote:
>>> OK, I'll simply change the above to CONFIG_PPC then.
>>
>> It does, the bug is in the uart IP which I don't think we ever plan on fixing, so 32 or 64-bit parts will have it for ever and ever ;)
>
> It should be runtime selected, there should be no ifdefs here.
The ifdef wasn't strictly required; it just made it so gcc would
toss the errata code out of the irq handler for !PPC. Anyway it
will be a moot point if I can somehow hide all the mess by snooping
serial_inp() traffic and deploying the errata fix from there....
P.
>
next prev parent reply other threads:[~2011-12-02 16:34 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-01 23:47 [PATCH 0/3] RFC Fix Fsl 8250 BRK bug via letting plat code set bugs Paul Gortmaker
2011-12-01 23:47 ` [PATCH 1/3] serial: make bugs field not specific to 8250 type uarts Paul Gortmaker
2011-12-02 0:51 ` Alan Cox
2011-12-02 1:32 ` Paul Gortmaker
2011-12-02 11:49 ` Alan Cox
2011-12-01 23:47 ` [PATCH 2/3] serial: allow passing in hardware bug info via platform device Paul Gortmaker
2011-12-01 23:47 ` [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ storm Paul Gortmaker
2011-12-01 23:51 ` Scott Wood
2011-12-02 0:05 ` Paul Gortmaker
2011-12-02 0:17 ` Kumar Gala
2011-12-02 11:30 ` Alan Cox
2011-12-02 16:34 ` Paul Gortmaker [this message]
2011-12-02 17:27 ` Scott Wood
2011-12-02 0:57 ` Alan Cox
2011-12-02 1:42 ` Paul Gortmaker
2011-12-04 23:42 ` [PATCH 0/6] RFCv2 Fix Fsl 8250 BRK bug Paul Gortmaker
2011-12-04 23:42 ` [PATCH 1/6] serial: move struct uart_8250_port from 8250.c to 8250.h Paul Gortmaker
2011-12-04 23:42 ` [PATCH 2/6] serial: clean up parameter passing for 8250 Rx IRQ handling Paul Gortmaker
2011-12-04 23:42 ` [PATCH 3/6] serial: export the key functions for an 8250 IRQ handler Paul Gortmaker
2011-12-04 23:42 ` [PATCH 4/6] serial: make 8250 timeout use the specified " Paul Gortmaker
2011-12-04 23:42 ` [PATCH 5/6] serial: manually inline serial8250_handle_port Paul Gortmaker
2011-12-04 23:42 ` [PATCH 6/6] serial: add irq handler for Freescale 16550 errata Paul Gortmaker
2011-12-05 12:18 ` [PATCH 0/6] RFCv2 Fix Fsl 8250 BRK bug Alan Cox
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