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Commit 04016697 authored by Simon Arlott's avatar Simon Arlott Committed by Brian Norris
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brcmnand: Clear EXT_ADDR error registers in PIO mode 



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: default avatarSimon Arlott <simon@fire.lp0.eu>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent fe7579d6

drivers/mtd/nand/brcmnand/brcmnand.c

+2 −0
Original line number Diff line number Diff line
@@ -1405,6 +1405,8 @@ 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));