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Message-ID: <4ED81632.3030809@windriver.com> Date: Thu, 1 Dec 2011 19:05:06 -0500 From: Paul Gortmaker <paul.gortmaker@...driver.com> To: Scott Wood <scottwood@...escale.com> CC: <gregkh@...e.de>, <alan@...ux.intel.com>, <galak@...nel.crashing.org>, <linux-serial@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org> Subject: 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: >> 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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