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[POWERPC] mpic_pasemi_msi: 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>
This commit is contained in:
Roel Kluin 2008-04-24 08:32:26 +10:00 committed by Paul Mackerras
parent 54ef0ec22a
commit ee1a08f963
1 changed files with 4 additions and 2 deletions
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6
arch/powerpc/sysdev/mpic_pasemi_msi.c
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@ -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;
}