On Dec 1, 2011, at 6:05 PM, Paul Gortmaker wrote:

> On 11-12-01 06:51 PM, Scott Wood wrote:
>> On 12/01/2011 05:47 PM, Paul Gortmaker wrote:
>>> diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h
>>> index 8c660af..b0f4042 100644
>>> --- a/include/linux/serial_8250.h
>>> +++ b/include/linux/serial_8250.h
>>> @@ -18,6 +18,11 @@
>>> #define UART_BUG_TXEN       (1 << 1)        /* buggy TX IIR status */
>>> #define UART_BUG_NOMSR      (1 << 2)        /* buggy MSR status bits 
>>> (Au1x00) */
>>> #define UART_BUG_THRE       (1 << 3)        /* buggy THRE reassertion */
>>> +#ifdef CONFIG_PPC32
>>> +#define UART_BUG_FSLBK     (1 << 4)        /* buggy FSL break IRQ storm */
>>> +#else      /* help GCC optimize away IRQ handler errata code for ARCH != 
>>> PPC32 */
>>> +#define UART_BUG_FSLBK     0
>>> +#endif
>> 
>> I believe this bug still exists on our 64-bit chips.
> 
> 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 ;)

- k
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