[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>
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1 changed files with 4 additions and 2 deletions
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@ -95,6 +95,7 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
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unsigned int virq;
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struct msi_desc *entry;
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struct msi_msg msg;
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int ret;
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pr_debug("pasemi_msi_setup_msi_irqs, pdev %p nvec %d type %d\n",
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pdev, nvec, type);
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@ -108,8 +109,9 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
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* few MSIs for someone, but restrictions will apply to how the
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* sources can be changed independently.
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*/
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hwirq = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK);
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if (hwirq < 0) {
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ret = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK);
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hwirq = ret;
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if (ret < 0) {
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pr_debug("pasemi_msi: failed allocating hwirq\n");
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return hwirq;
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}
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