D17976.id50423.diff
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D17976.id50423.diff
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	Index: head/sys/x86/x86/msi.c
	===================================================================
	--- head/sys/x86/x86/msi.c
	+++ head/sys/x86/x86/msi.c
	@@ -409,7 +409,7 @@
	/* Do we need to create some new sources? */
	if (cnt < count) {
	/* If we would exceed the max, give up. */
	- if (i + (count - cnt) >= first_msi_irq + NUM_MSI_INTS) {
	+ if (i + (count - cnt) > first_msi_irq + NUM_MSI_INTS) {
	mtx_unlock(&msi_lock);
	free(mirqs, M_MSI);
	return (ENXIO);
	@@ -647,13 +647,14 @@
	break;
	}

	+ /* Are all IRQs in use? */
	+ if (i == first_msi_irq + NUM_MSI_INTS) {
	+ mtx_unlock(&msi_lock);
	+ return (ENXIO);
	+ }
	+
	/* Do we need to create a new source? */
	if (msi == NULL) {
	- /* If we would exceed the max, give up. */
	- if (i + 1 >= first_msi_irq + NUM_MSI_INTS) {
	- mtx_unlock(&msi_lock);
	- return (ENXIO);
	- }
	mtx_unlock(&msi_lock);

	/* Create a new source. */