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

On 11-12-01 06:51 PM, Scott Wood wrote:

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On 12/01/2011 05:47 PM, Paul Gortmaker wrote:

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diff --git a/include/linux/serial_8250.h =

b/include/linux/serial_8250.h

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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 =

*/

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#define UART_BUG_NOMSR	(1 << 2)	/* buggy MSR status bits =

(Au1x00) */

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#define UART_BUG_THRE	(1 << 3)	/* buggy THRE =

reassertion */

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+#ifdef CONFIG_PPC32
+#define UART_BUG_FSLBK	(1 << 4)	/* buggy FSL break IRQ =

storm */

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+#else	/* help GCC optimize away IRQ handler errata code for =

ARCH !=3D PPC32 */

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+#define UART_BUG_FSLBK	0
+#endif

=20
I believe this bug still exists on our 64-bit chips.

=20
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=