a7fd918920
The off-by-one errors in 332735 weren't actual errors and were preventing the last MSI interrupt source from being used. Instead, the issue is that when all MSI interrupt sources were allocated, the loop in msix_alloc() would terminate with 'msi' still set to non-null. The only check for 'i' overflowing was in the 'msi' == NULL case, so msix_alloc() would try to reuse the last MSI interrupt source instead of failing. Fix by moving the check for all sources being in use to just after the loop. Reviewed by: kib, markj MFC after: 1 month Differential Revision: https://reviews.freebsd.org/D17976 |
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