linux-kernel - [PATCH 3/7] x86: fix alloc

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Date:	Wed, 06 May 2009 10:07:07 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Len Brown <lenb@...nel.org>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Subject: [PATCH 3/7] x86: fix alloc_mptable


fix the condition checking.

[ Impact: make alloc_mptable working ]

Signed-off-by: Yinghai Lu <yinghai@...nel.org>

---
 arch/x86/kernel/mpparse.c |   15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

Index: linux-2.6/arch/x86/kernel/mpparse.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/mpparse.c
+++ linux-2.6/arch/x86/kernel/mpparse.c
@@ -873,21 +873,24 @@ inline void __init check_irq_src(struct
 static int check_slot(unsigned long mpc_new_phys, unsigned long mpc_new_length,
 		      int count)
 {
+	int ret = 0;
+
 	if (!mpc_new_phys) {
-		pr_info("No spare slots, try to append...take your risk, "
+		pr_warning("No spare slots, try to append...take your risk, "
 			"new mpc_length %x\n", count);
 	} else {
-		if (count <= mpc_new_length)
+		if (count <= mpc_new_length) {
 			pr_info("No spare slots, try to append..., "
 				"new mpc_length %x\n", count);
-		else {
+			ret = 1;
+		} else {
 			pr_err("mpc_new_length %lx is too small\n",
 				mpc_new_length);
-			return -1;
+			ret = -1;
 		}
 	}
 
-	return 0;
+	return ret;
 }
 
 static int  __init replace_intsrc_all(struct mpc_table *mpc,
@@ -946,7 +949,7 @@ static int  __init replace_intsrc_all(st
 		} else {
 			struct mpc_intsrc *m = (struct mpc_intsrc *)mpt;
 			count += sizeof(struct mpc_intsrc);
-			if (!check_slot(mpc_new_phys, mpc_new_length, count))
+			if (check_slot(mpc_new_phys, mpc_new_length, count) < 0)
 				goto out;
 			assign_to_mpc_intsrc(&mp_irqs[i], m);
 			mpc->length = count;
--
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