MIPS: BCM47XX: use fallback sprom var for board_{rev,type}

An SoC normally do not define path variables for board_rev and
board_type and the Broadcom SDK also uses the nvram values without a
prefix in such cases. Do the same to fill these sprom attributes from
nvram and do not leave them empty, because brcmsmac do not like this.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Patchwork: http://patchwork.linux-mips.org/patch/4679/
Signed-off-by: John Crispin <blogic@openwrt.org>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/mips/bcm47xx/sprom.c b/arch/mips/bcm47xx/sprom.c
index 38492301a7b5..7d97a5a4bd3f 100644
--- a/arch/mips/bcm47xx/sprom.c
+++ b/arch/mips/bcm47xx/sprom.c
@@ -652,12 +652,10 @@ static void bcm47xx_fill_sprom_ethernet(struct ssb_sprom *sprom,
 static void bcm47xx_fill_board_data(struct ssb_sprom *sprom, const char *prefix,
                                     bool fallback)
 {
-        nvram_read_u16(prefix, NULL, "boardrev", &sprom->board_rev, 0,
-                       fallback);
+        nvram_read_u16(prefix, NULL, "boardrev", &sprom->board_rev, 0, true);
         nvram_read_u16(prefix, NULL, "boardnum", &sprom->board_num, 0,
                        fallback);
-        nvram_read_u16(prefix, NULL, "boardtype", &sprom->board_type, 0,
-                       fallback);
+        nvram_read_u16(prefix, NULL, "boardtype", &sprom->board_type, 0, true);
         nvram_read_u32_2(prefix, "boardflags", &sprom->boardflags_lo,
                          &sprom->boardflags_hi, fallback);
         nvram_read_u32_2(prefix, "boardflags2", &sprom->boardflags2_lo,