[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: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 8df184f..80a7665 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -1610,13 +1610,13 @@
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;