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| author | Roel Kluin <12o3l@tiscali.nl> | 2008-04-24 09:03:02 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-05-14 22:31:25 +1000 |
| commit | 9d5f525b86453da921360727112161254accc8c1 (patch) | |
| tree | a87bd5c9e4d94ddef0724bb68a4ed1815e552d84 | |
| parent | ee1a08f963c5abb5ec2d8c5defffecee7c3f84c8 (diff) | |
| download | linux-9d5f525b86453da921360727112161254accc8c1.tar.gz linux-9d5f525b86453da921360727112161254accc8c1.tar.bz2 linux-9d5f525b86453da921360727112161254accc8c1.zip | |
[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 <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/sysdev/mpic_u3msi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/powerpc/sysdev/mpic_u3msi.c b/arch/powerpc/sysdev/mpic_u3msi.c index 1d5a40899b74..6e2f8686fdfc 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) { |