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mtd: cfi_cmdset_0002: Change write buffer to check correct value

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commit dfeae10735 upstream.

For the word write it is checked if the chip has the correct value.
But it is not checked for the write buffer as only checked if ready.
To make sure for the write buffer change to check the value.

It is enough as this patch is only checking the last written word.
Since it is described by data sheets to check the operation status.

Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Joakim Tjernlund <Joakim.Tjernlund@infinera.com>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org
Cc: stable@vger.kernel.org
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tokunori Ikegami
2018-05-30 18:32:26 +09:00
committed by Greg Kroah-Hartman
parent d097e5b5a1
commit 746c1362c4
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/chips/cfi_cmdset_0002.c
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@@ -1880,7 +1880,7 @@ static int __xipram do_write_buffer(struct map_info *map, struct flchip *chip,
if (time_after(jiffies, timeo) && !chip_ready(map, adr))
break;
if (chip_ready(map, adr)) {
if (chip_good(map, adr, datum)) {
xip_enable(map, chip, adr);
goto op_done;
}