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Commit 6a930961 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by David Woodhouse
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[MTD] NAND: Select chip before checking write protect status 



The other way round works not really well with boards which have a
static NAND chipselect.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent 1887f517

drivers/mtd/nand/nand_base.c

+3 −3
Original line number Diff line number Diff line
@@ -1610,13 +1610,13 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, 
	if (!writelen)

		return 0;



	chipnr = (int)(to >> chip->chip_shift);

	chip->select_chip(mtd, chipnr);



	/* Check, if it is write protected */

	if (nand_check_wp(mtd))

		return -EIO;



	chipnr = (int)(to >> chip->chip_shift);

	chip->select_chip(mtd, chipnr);



	realpage = (int)(to >> chip->page_shift);

	page = realpage & chip->pagemask;

	blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;