openwrt/target/linux/bcm53xx/patches-4.14/900-mtd-bcm47xxpart-add-device-specific-workarounds.patch

From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Subject: [PATCH] mtd: bcm47xxpart: add device specific workarounds
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---

--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
+#include <linux/of.h>
 
 #include <uapi/linux/magic.h>
 
@@ -134,6 +135,36 @@ static int bcm47xxpart_parse(struct mtd_
 			break;
 		}
 
+		/*
+		 * Device specific workarounds (hacks). We should use DT to
+		 * define partitions but we need a working TRX firmware splitter
+		 * first.
+		 */
+		if (of_machine_is_compatible("asus,rt-ac87u") && offset == 0x7ec0000) {
+			/*
+			 * "asus" partition uses JFFS2 which we don't detect and
+			 * we don't want to as this could affect other devices.
+			 */
+			bcm47xxpart_add_part(&parts[curr_part++], "asus", offset, MTD_WRITEABLE);
+			continue;
+		} else  if (of_machine_is_compatible("tplink,archer-c5-v2") && offset == 0xe40000) {
+			/*
+			 * There is a whole set of partitions (not even listed
+			 * by original firmware): "default-mac", "pin",
+			 * "partition-table", etc.
+			 */
+			bcm47xxpart_add_part(&parts[curr_part++], "tplink", offset, MTD_WRITEABLE);
+			continue;
+		} else  if (of_machine_is_compatible("tplink,archer-c9-v1") && offset == 0xe40000) {
+			/*
+			 * There is a whole set of partitions (not even listed
+			 * by original firmware): "default-mac", "pin",
+			 * "partition-table", etc.
+			 */
+			bcm47xxpart_add_part(&parts[curr_part++], "tplink", offset, MTD_WRITEABLE);
+			continue;
+		}
+
 		/* Read beginning of the block */
 		err = mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ,
 			       &bytes_read, (uint8_t *)buf);