All of lore.kernel.org
 help / color / mirror / Atom feed
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



WARNING: multiple messages have this Message-ID (diff)
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


_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv

  parent reply	other threads:[~2026-06-30  7:48 UTC|newest]

Thread overview: 38+ 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 ` 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  7:47   ` Wandun Chen
2026-06-30 11:05   ` Pratyush Yadav
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
2026-06-30  7:47 ` Wandun Chen [this message]
2026-06-30  7:47   ` [PATCH v4 03/10] of: reserved_mem: skip late scan when no regions are reserved Wandun Chen
2026-06-30  8:19   ` sashiko-bot
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   ` 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   ` 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   ` 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  7:47   ` Wandun Chen
2026-06-30 11:06   ` Pratyush Yadav
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  7:47   ` Wandun Chen
2026-06-30  9:04   ` sashiko-bot
2026-06-30 11:06   ` Pratyush Yadav
2026-06-30 11:06     ` Pratyush Yadav
2026-06-30  7:47 ` [PATCH v4 09/10] riscv: " Wandun Chen
2026-06-30  7:47   ` Wandun Chen
2026-06-30  9:22   ` sashiko-bot
2026-06-30 11:12   ` Pratyush Yadav
2026-06-30 11:12     ` Pratyush Yadav
2026-06-30 12:00     ` Wandun
2026-06-30 12:00       ` Wandun
2026-06-30  7:47 ` [PATCH v4 10/10] loongarch: " Wandun Chen
2026-06-30  7:47   ` Wandun Chen
2026-06-30  9:37   ` sashiko-bot
2026-06-30 11:13   ` Pratyush Yadav
2026-06-30 11:13     ` Pratyush Yadav

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20260630074715.4126796-4-chenwandun1@gmail.com \
    --to=chenwandun1@gmail.com \
    --cc=akpm@linux-foundation.org \
    --cc=alex@ghiti.fr \
    --cc=aou@eecs.berkeley.edu \
    --cc=bhe@redhat.com \
    --cc=catalin.marinas@arm.com \
    --cc=chenhuacai@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=iommu@lists.linux.dev \
    --cc=kernel@xen0n.name \
    --cc=kexec@lists.infradead.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=loongarch@lists.linux.dev \
    --cc=m.szyprowski@samsung.com \
    --cc=palmer@dabbelt.com \
    --cc=pasha.tatashin@soleen.com \
    --cc=pjw@kernel.org \
    --cc=pratyush@kernel.org \
    --cc=robh@kernel.org \
    --cc=robin.murphy@arm.com \
    --cc=rppt@kernel.org \
    --cc=ruirui.yang@linux.dev \
    --cc=saravanak@kernel.org \
    --cc=will@kernel.org \
    --cc=zhaomeijing@lixiang.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.