linux-kernel - [PATCH 4.16 40/72] mtd: rawnand: marvell: fix command xtype in BCH write hook

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Date:   Mon, 14 May 2018 08:48:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Miquel Raynal <miquel.raynal@...tlin.com>,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Boris Brezillon <boris.brezillon@...tlin.com>
Subject: [PATCH 4.16 40/72] mtd: rawnand: marvell: fix command xtype in BCH write hook

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Miquel Raynal <miquel.raynal@...tlin.com>

commit a2ee41fd953e7c3ff6c55a3038c80354d191a318 upstream.

One layout supported by the Marvell NAND controller supports NAND pages
of 2048 bytes, all handled in one single chunk when using BCH with a
strength of 4-bit per 512 bytes. In this case, instead of the generic
XTYPE_WRITE_DISPATCH/XTYPE_LAST_NAKED_RW couple, the controller expects
to receive XTYPE_MONOLITHIC_RW.

This fixes problems at boot like:

[    1.315475] Scanning device for bad blocks
[    3.203108] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    3.209564] nand_bbt: error while writing BBT block -110
[    4.243106] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    5.283106] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    5.289562] nand_bbt: error -110 while marking block 2047 bad
[    6.323106] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    6.329559] nand_bbt: error while writing BBT block -110
[    7.363106] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    8.403105] marvell-nfc f10d0000.flash: Timeout waiting for RB signal
[    8.409559] nand_bbt: error -110 while marking block 2046 bad
...

Fixes: 02f26ecf8c772 ("mtd: nand: add reworked Marvell NAND controller driver")
Cc: stable@...r.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
Tested-by: Chris Packham <chris.packham@...iedtelesis.co.nz>
Signed-off-by: Boris Brezillon <boris.brezillon@...tlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/nand/marvell_nand.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/mtd/nand/marvell_nand.c
+++ b/drivers/mtd/nand/marvell_nand.c
@@ -1404,6 +1404,7 @@ marvell_nfc_hw_ecc_bch_write_chunk(struc
 	struct marvell_nand_chip *marvell_nand = to_marvell_nand(chip);
 	struct marvell_nfc *nfc = to_marvell_nfc(chip->controller);
 	const struct marvell_hw_ecc_layout *lt = to_marvell_nand(chip)->layout;
+	u32 xtype;
 	int ret;
 	struct marvell_nfc_op nfc_op = {
 		.ndcb[0] = NDCB0_CMD_TYPE(TYPE_WRITE) | NDCB0_LEN_OVRD,
@@ -1419,7 +1420,12 @@ marvell_nfc_hw_ecc_bch_write_chunk(struc
 	 * last naked write.
 	 */
 	if (chunk == 0) {
-		nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(XTYPE_WRITE_DISPATCH) |
+		if (lt->nchunks == 1)
+			xtype = XTYPE_MONOLITHIC_RW;
+		else
+			xtype = XTYPE_WRITE_DISPATCH;
+
+		nfc_op.ndcb[0] |= NDCB0_CMD_XTYPE(xtype) |
 				  NDCB0_ADDR_CYC(marvell_nand->addr_cyc) |
 				  NDCB0_CMD1(NAND_CMD_SEQIN);
 		nfc_op.ndcb[1] |= NDCB1_ADDRS_PAGE(page);