From 9d5f525b86453da921360727112161254accc8c1 Mon Sep 17 00:00:00 2001 From: Roel Kluin <12o3l@tiscali.nl> Date: Thu, 24 Apr 2008 09:03:02 +1000 Subject: [PATCH] [POWERPC] 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@tiscali.nl> Signed-off-by: Paul Mackerras --- arch/powerpc/sysdev/mpic_u3msi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c index 1d5a40899b..6e2f8686fd 100644 --- a/arch/powerpc/sysdev/mpic_u3msi.c +++ b/arch/powerpc/sysdev/mpic_u3msi.c @@ -115,17 +115,19 @@ static int u3msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) struct msi_desc *entry; struct msi_msg msg; u64 addr; + int ret; addr = find_ht_magic_addr(pdev); msg.address_lo = addr & 0xFFFFFFFF; msg.address_hi = addr >> 32; list_for_each_entry(entry, &pdev->msi_list, list) { - hwirq = mpic_msi_alloc_hwirqs(msi_mpic, 1); - if (hwirq < 0) { + ret = mpic_msi_alloc_hwirqs(msi_mpic, 1); + if (ret < 0) { pr_debug("u3msi: failed allocating hwirq\n"); - return hwirq; + return ret; } + hwirq = ret; virq = irq_create_mapping(msi_mpic->irqhost, hwirq); if (virq == NO_IRQ) { -- 2.39.5