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Tue, 30 Jun 2026 00:47:59 -0700 (PDT) From: Wandun Chen 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 Message-ID: <20260630074715.4126796-4-chenwandun1@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260630074715.4126796-1-chenwandun1@gmail.com> References: <20260630074715.4126796-1-chenwandun1@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Wandun Chen 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 --- 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