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kernel: reserved_mem: add missing IORESOURCE_MEM flag on resources

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This patch fixes a bug in a patch we backported.

This patch was cherry picked from upstream Linux because it references a
patch we backported in the fixes tag.

Fixes: 9d3009f426 ("airoha: major backport of Airoha Ethernet driver feature support")
Link: https://github.com/openwrt/openwrt/pull/21366
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Hauke Mehrtens 2026-01-01 19:17:00 +01:00
parent b3318fe819
commit b3cc77eead
1 changed files with 32 additions and 0 deletions
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target/linux/generic/backport-6.12/212-v6.17-of-reserved_mem-Add-missing-IORESOURCE_MEM-flag-on-r.patch Normal file
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@ -0,0 +1,32 @@
From aea70964b5a7ca491a3701f2dde6c9d05d51878d Mon Sep 17 00:00:00 2001
From: "Rob Herring (Arm)" <robh@kernel.org>
Date: Wed, 20 Aug 2025 14:28:04 -0500
Subject: of: reserved_mem: Add missing IORESOURCE_MEM flag on resources
Commit f4fcfdda2fd8 ('of: reserved_mem: Add functions to parse
"memory-region"') failed to set IORESOURCE_MEM flag on the resources.
The result is functions such as devm_ioremap_resource_wc() will fail.
Add the missing flag.
Fixes: f4fcfdda2fd8 ('of: reserved_mem: Add functions to parse "memory-region"')
Reported-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reported-by: Daniel Baluta <daniel.baluta@gmail.com>
Tested-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20250820192805.565568-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
drivers/of/of_reserved_mem.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -725,6 +725,7 @@ int of_reserved_mem_region_to_resource(c
return -EINVAL;
resource_set_range(res, rmem->base, rmem->size);
+ res->flags = IORESOURCE_MEM;
res->name = rmem->name;
return 0;
}