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Subject[PATCH] brcmnand: Clear EXT_ADDR error registers in PIO mode
Date
If an error occurs in flash above 4GB in PIO mode then the EXT_ADDR
registers will be set to the location of the error and never cleared.

Reset them to 0 before reading.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
---
drivers/mtd/nand/brcmnand/brcmnand.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c
index 12c6190..2c8f67f 100644
--- a/drivers/mtd/nand/brcmnand/brcmnand.c
+++ b/drivers/mtd/nand/brcmnand/brcmnand.c
@@ -1400,6 +1400,8 @@ static int brcmnand_read_by_pio(struct mtd_info *mtd, struct nand_chip *chip,
/* Clear error addresses */
brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_ADDR, 0);
brcmnand_write_reg(ctrl, BRCMNAND_CORR_ADDR, 0);
+ brcmnand_write_reg(ctrl, BRCMNAND_UNCORR_EXT_ADDR, 0);
+ brcmnand_write_reg(ctrl, BRCMNAND_CORR_EXT_ADDR, 0);

brcmnand_write_reg(ctrl, BRCMNAND_CMD_EXT_ADDRESS,
(host->cs << 16) | ((addr >> 32) & 0xffff));
--
2.1.4
--
Simon Arlott


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