mtd: bcm47xxpart: detect "factory" partition

A new type of partition with magic FCTY was found on Huawei E970:
46 43 54 59 4b 51 37 4e  41 42 31 38 41 32 39 30  |FCTYKQ7NAB18A290|

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c
index a737450826ec..7a6384b0962a 100644
--- a/drivers/mtd/bcm47xxpart.c
+++ b/drivers/mtd/bcm47xxpart.c
@@ -27,6 +27,7 @@
 
 /* Magics */
 #define BOARD_DATA_MAGIC                0x5246504D      /* MPFR */
+#define FACTORY_MAGIC                   0x59544346      /* FCTY */
 #define POT_MAGIC1                      0x54544f50      /* POTT */
 #define POT_MAGIC2                      0x504f          /* OP */
 #define ML_MAGIC1                       0x39685a42
@@ -118,6 +119,13 @@ static int bcm47xxpart_parse(struct mtd_info *master,
                         continue;
                 }
 
+                /* Found on Huawei E970 */
+                if (buf[0x000 / 4] == FACTORY_MAGIC) {
+                        bcm47xxpart_add_part(&parts[curr_part++], "factory",
+                                             offset, MTD_WRITEABLE);
+                        continue;
+                }
+
                 /* POT(TOP) */
                 if (buf[0x000 / 4] == POT_MAGIC1 &&
                     (buf[0x004 / 4] & 0xFFFF) == POT_MAGIC2) {