linux-kernel - [PATCH 1/2 v2] powerpc: mpic_pasemi

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Date:	Thu, 24 Apr 2008 00:32:26 +0200
From:	Roel Kluin <12o3l@...cali.nl>
To:	paulus@...ba.org, linuxppc-dev@...abs.org
CC:	lkml <linux-kernel@...r.kernel.org>,
	Segher Boessenkool <segher@...nel.crashing.org>
Subject: [PATCH 1/2 v2] powerpc: mpic_pasemi_msi: failed allocation unnoticed

also please add my signoff to 
[PATCH 2/2 v2] mpic_u3msi: mpic_u3msi: failed allocation unnoticed
---
bitmap_find_free_region(), called by mpic_msi_alloc_hwirqs() may return
signed, but hwirq is unsigned. A failed allocation remains unnoticed.

Signed-off-by: Roel Kluin <12o3l@...cali.nl>
---
diff --git a/arch/powerpc/sysdev/mpic_pasemi_msi.c b/arch/powerpc/sysdev/mpic_pasemi_msi.c
index 33cbfb2..68aff60 100644
--- a/arch/powerpc/sysdev/mpic_pasemi_msi.c
+++ b/arch/powerpc/sysdev/mpic_pasemi_msi.c
@@ -95,6 +95,7 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	unsigned int virq;
 	struct msi_desc *entry;
 	struct msi_msg msg;
+	int ret;
 
 	pr_debug("pasemi_msi_setup_msi_irqs, pdev %p nvec %d type %d\n",
 		 pdev, nvec, type);
@@ -108,8 +109,9 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 		 * few MSIs for someone, but restrictions will apply to how the
 		 * sources can be changed independently.
 		 */
-		hwirq = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK);
-		if (hwirq < 0) {
+		ret = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK);
+		hwirq = ret;
+		if (ret < 0) {
 			pr_debug("pasemi_msi: failed allocating hwirq\n");
 			return hwirq;
 		}

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