linux-kernel - RE: [PATCH] x86/quark: Run IMR self-test on IMR capble hw only

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Date:	Tue, 31 Mar 2015 12:14:50 +0000
From:	"Ong, Boon Leong" <boon.leong.ong@...el.com>
To:	Bryan O'Donoghue <pure.logic@...us-software.ie>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"hpa@...or.com" <hpa@...or.com>, "x86@...nel.org" <x86@...nel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	"huang.ying.caritas@...il.com" <huang.ying.caritas@...il.com>,
	"Shevchenko, Andriy" <andriy.shevchenko@...el.com>,
	"dvhart@...ux.intel.com" <dvhart@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] x86/quark: Run IMR self-test on IMR capble hw only

Looks good to me. Thanks

>-----Original Message-----
>From: Bryan O'Donoghue [mailto:pure.logic@...us-software.ie]
>Sent: Tuesday, March 31, 2015 7:16 PM
>To: pure.logic@...us-software.ie; mingo@...hat.com; tglx@...utronix.de;
>hpa@...or.com; x86@...nel.org; Huang, Ying; huang.ying.caritas@...il.com;
>Shevchenko, Andriy; Ong, Boon Leong; dvhart@...ux.intel.com; linux-
>kernel@...r.kernel.org
>Subject: [PATCH] x86/quark: Run IMR self-test on IMR capble hw only
>
>Automated testing with LKP shows IMR self test code running and printing
>error messages on QEMU hardware lacking IMR support.
>
>Update IMR self-test code to run only when IMR hardware should be present.
>Tested on Quark X1000 and QEMU.
>
>Signed-off-by: Bryan O'Donoghue <pure.logic@...us-software.ie>
Acked-by: Ong Boon Leong <boon.leong.ong@...el.com>

>---
> arch/x86/platform/intel-quark/imr_selftest.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
>diff --git a/arch/x86/platform/intel-quark/imr_selftest.c
>b/arch/x86/platform/intel-quark/imr_selftest.c
>index c9a0838..5e6c055 100644
>--- a/arch/x86/platform/intel-quark/imr_selftest.c
>+++ b/arch/x86/platform/intel-quark/imr_selftest.c
>@@ -11,6 +11,7 @@
>  */
>
> #include <asm-generic/sections.h>
>+#include <asm/cpu_device_id.h>
> #include <asm/imr.h>
> #include <linux/init.h>
> #include <linux/mm.h>
>@@ -101,6 +102,13 @@ static void __init imr_self_test(void)
> 	}
> }
>
>+static const struct x86_cpu_id imr_ids[] __initconst = {
>+	{ X86_VENDOR_INTEL, 5, 9 },	/* Intel Quark SoC X1000. */
>+	{}
>+};
>+MODULE_DEVICE_TABLE(x86cpu, imr_ids);
>+
>+
> /**
>  * imr_self_test_init - entry point for IMR driver.
>  *
>@@ -108,7 +116,8 @@ static void __init imr_self_test(void)
>  */
> static int __init imr_self_test_init(void)  {
>-	imr_self_test();
>+	if (x86_match_cpu(imr_ids))
>+		imr_self_test();
> 	return 0;
> }
>
>--
>1.9.1

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