From: Wandun Chen <chenwandun1@gmail.com>
To: chenhuacai@kernel.org, kernel@xen0n.name, pjw@kernel.org,
palmer@dabbelt.com, aou@eecs.berkeley.edu, robh@kernel.org,
saravanak@kernel.org, bhe@redhat.com, rppt@kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, loongarch@lists.linux.dev,
linux-riscv@lists.infradead.org, devicetree@vger.kernel.org,
kexec@lists.infradead.org, iommu@lists.linux.dev,
zhaomeijing@lixiang.com
Cc: catalin.marinas@arm.com, will@kernel.org, alex@ghiti.fr,
akpm@linux-foundation.org, pasha.tatashin@soleen.com,
pratyush@kernel.org, ruirui.yang@linux.dev,
m.szyprowski@samsung.com, robin.murphy@arm.com
Subject: [PATCH v4 03/10] of: reserved_mem: skip late scan when no regions are reserved
Date: Tue, 30 Jun 2026 15:47:07 +0800 [thread overview]
Message-ID: <20260630074715.4126796-4-chenwandun1@gmail.com> (raw)
In-Reply-To: <20260630074715.4126796-1-chenwandun1@gmail.com>
From: Wandun Chen <chenwandun@lixiang.com>
When total_reserved_mem_cnt is 0, there is no /reserved-memory node
so fdt_scan_reserved_mem_late() have nothing to do, so return -ENODEV
directly from alloc_reserved_mem_array() in this case.
No functional change.
Signed-off-by: Wandun Chen <chenwandun@lixiang.com>
---
drivers/of/of_reserved_mem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index 42649dc3613f..e1bd35115cc1 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -76,7 +76,7 @@ static int __init alloc_reserved_mem_array(void)
int ret;
if (!total_reserved_mem_cnt)
- return 0;
+ return -ENODEV;
alloc_size = array_size(total_reserved_mem_cnt, sizeof(*new_array));
if (alloc_size == SIZE_MAX) {
--
2.43.0
next prev parent reply other threads:[~2026-06-30 7:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-30 7:47 [PATCH v4 00/10] kdump: reduce vmcore size and capture time Wandun Chen
2026-06-30 7:47 ` [PATCH v4 01/10] kexec/crash: provide crash_exclude_mem_range() stub when CONFIG_CRASH_DUMP=n Wandun Chen
2026-06-30 11:05 ` Pratyush Yadav
2026-06-30 7:47 ` [PATCH v4 02/10] of: reserved_mem: dedup and relocate reserved-memory messages Wandun Chen
2026-06-30 7:47 ` Wandun Chen [this message]
2026-06-30 7:47 ` [PATCH v4 04/10] of: reserved_mem: split alloc_reserved_mem_array() from fdt_scan_reserved_mem_late() Wandun Chen
2026-06-30 7:47 ` [PATCH v4 05/10] of: reserved_mem: add dumpable flag to opt-in vmcore Wandun Chen
2026-06-30 7:47 ` [PATCH v4 06/10] of: reserved_mem: save /memreserve/ entries into the reserved_mem array Wandun Chen
2026-06-30 7:47 ` [PATCH v4 07/10] of: reserved_mem: add kdump helpers to exclude non-dumpable regions Wandun Chen
2026-06-30 11:06 ` Pratyush Yadav
2026-06-30 7:47 ` [PATCH v4 08/10] arm64: kdump: exclude non-dumpable reserved memory regions from vmcore Wandun Chen
2026-06-30 11:06 ` Pratyush Yadav
2026-06-30 7:47 ` [PATCH v4 09/10] riscv: " Wandun Chen
2026-06-30 11:12 ` Pratyush Yadav
2026-06-30 12:00 ` Wandun
2026-06-30 7:47 ` [PATCH v4 10/10] loongarch: " Wandun Chen
2026-06-30 11:13 ` Pratyush Yadav
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