Re: [PATCH 3/3] 8250: add workaround for MPC8[356]xx UART break IRQ storm

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

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

quoted

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.

Thanks,
Paul.

-Scott