ar71xx: ar934x-nfc: disable subpage write when hardware ECC is used

It is not supported by the controller.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38234 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
index 8b66580..9231251 100644 (file)
--- a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
+++ b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c
@@ -1281,6 +1281,12 @@ ar934x_nfc_setup_hwecc(struct ar934x_nfc *nfc)
 
        switch (nfc->mtd.writesize) {
        case 2048:
+               /*
+                * Writing a subpage separately is not supported, because
+                * the controller only does ECC on full-page accesses.
+                */
+               nand->options = NAND_NO_SUBPAGE_WRITE;
+
                nand->ecc.size = 512;
                nand->ecc.bytes = 7;
                nand->ecc.strength = 4;