Re: [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ storm
From: Scott Wood <hidden>
Date: 2011-12-02 17:27:22
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linux-serial, lkml
On 12/02/2011 10:34 AM, Paul Gortmaker wrote:
On 11-12-02 06:30 AM, Alan Cox wrote:quoted
quoted
quoted
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....
Eww. If it's not to be allowed in the main 8250 code (even for ppc builds only), a custom handle_port sounds like a saner option. -Scott