openwrtv4/target/linux/bcm53xx/patches-4.9/410-Use-brcm-bcm947xx-cfe-partitions-binding-for-Broadco.patch
Rafał Miłecki f5195e72c0 kernel: mtd: bcm47xxpart: improve handling TRX partition size
This is important fix for flash parsing in some corner cases. In case
of TRX subpartition with rootfs being aligned to the flash block size it
was incorrectly registered twice. Detecting & registering it as a
standalone partition was resulting in an incorrect "firmware" partition
size and possibly broken sysupgrade.

It wasn't noticed before because "rootfs" alignment depends on a kernel
size. It can happen though - depending on the configuration and the
kernel size.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2018-04-12 08:25:17 +02:00

53 lines
1.3 KiB
Diff

From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] Use "brcm,bcm947xx-cfe-partitions" binding for Broadcom
partitions
---
--- a/arch/arm/boot/dts/bcm5301x-nand-cs0.dtsi
+++ b/arch/arm/boot/dts/bcm5301x-nand-cs0.dtsi
@@ -13,6 +13,10 @@
reg = <0>;
#address-cells = <1>;
#size-cells = <1>;
+
+ partitions {
+ compatible = "brcm,bcm947xx-cfe-partitions";
+ };
};
};
};
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -346,8 +346,11 @@
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <20000000>;
- linux,part-probe = "ofpart", "bcm47xxpart";
status = "disabled";
+
+ partitions {
+ compatible = "brcm,bcm947xx-cfe-partitions";
+ };
};
};
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -314,9 +314,16 @@ static int bcm47xxpart_parse(struct mtd_
return curr_part;
};
+static const struct of_device_id bcm47xxpart_of_match_table[] = {
+ { .compatible = "brcm,bcm947xx-cfe-partitions" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, bcm47xxpart_of_match_table);
+
static struct mtd_part_parser bcm47xxpart_mtd_parser = {
.parse_fn = bcm47xxpart_parse,
.name = "bcm47xxpart",
+ .of_match_table = bcm47xxpart_of_match_table,
};
module_mtd_part_parser(bcm47xxpart_mtd_parser);