Date: Mon, 25 Sep 2023 11:01:02 GMT From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: ffe9a1987bb7 - stable/13 - Continue searching for an irq map from the start Message-ID: <202309251101.38PB12F1053130@gitrepo.freebsd.org>
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The branch stable/13 has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=ffe9a1987bb7d57b21bb19e20fd9f66dd98e7a78 commit ffe9a1987bb7d57b21bb19e20fd9f66dd98e7a78 Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2023-06-27 08:32:12 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2023-09-25 08:41:32 +0000 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 (cherry picked from commit 9beb195fd9fdc4beb7d5bca865cf5b19ccd7449b) --- sys/kern/subr_intr.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sys/kern/subr_intr.c b/sys/kern/subr_intr.c index 02da0b884535..cb7a8647e433 100644 --- a/sys/kern/subr_intr.c +++ b/sys/kern/subr_intr.c @@ -1715,6 +1715,14 @@ 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 */
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