[MTD] mtd_dataflash: Incorrect compare-after-write check
After writing to a Dataflash page, the built-in compare operation is
used to check that the page was successfully written. A logic bug in
checking the results of the comparison currently causes the compare to
never fail.
This bug was originally in the legacy at91_dataflash.c driver.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index a5ed6d2..b35e481 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -420,7 +420,7 @@
status = dataflash_waitready(priv->spi);
/* Check result of the compare operation */
- if ((status & (1 << 6)) == 1) {
+ if (status & (1 << 6)) {
printk(KERN_ERR "%s: compare page %u, err %d\n",
spi->dev.bus_id, pageaddr, status);
remaining = 0;