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| author | Andrew Turner <andrew@FreeBSD.org> | 2023-06-27 08:32:12 +0000 |
|---|---|---|
| committer | Andrew Turner <andrew@FreeBSD.org> | 2023-06-28 17:03:08 +0000 |
| commit | 9beb195fd9fdc4beb7d5bca865cf5b19ccd7449b (patch) | |
| tree | da49ba79f7649596140a5c0c136bd12a4a933f9f | |
| parent | 1e0ba9d43cf035c63b8e525606ca5bc89f3b22a4 (diff) | |
| download | src-9beb195fd9fdc4beb7d5bca865cf5b19ccd7449b.tar.gz src-9beb195fd9fdc4beb7d5bca865cf5b19ccd7449b.zip | |
Continue searching for an irq map from the start
When searching for a free irq map location continue the search from the
beginning of the list. There may be holes in the map before
irq_map_first_free_idx, e.g. when removing an entries in order will
increase the index past the current free entry.
PR: 271990
Reviewed by: mhorne
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D40768
| -rw-r--r-- | sys/kern/subr_intr.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/kern/subr_intr.c b/sys/kern/subr_intr.c index 5c7c99f458c1..ab882209c1e3 100644 --- a/sys/kern/subr_intr.c +++ b/sys/kern/subr_intr.c @@ -1720,6 +1720,14 @@ intr_map_irq(device_t dev, intptr_t xref, struct intr_map_data *data) return (i); } } + for (i = 0; i < irq_map_first_free_idx; i++) { + if (irq_map[i] == NULL) { + irq_map[i] = entry; + irq_map_first_free_idx = i + 1; + mtx_unlock(&irq_map_lock); + return (i); + } + } mtx_unlock(&irq_map_lock); /* XXX Expand irq_map table */ |