[PATCH] SPI/MTD: mtd_dataflash oops prevention

Return a fault code if the Dataflash driver runs into a "no device present"
error when the MISO line has a pulldown (it currently expects a pullup), so
that rmmod won't oops.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c
index 0a7e86859bf1..910e4061dfd2 100644
--- a/drivers/mtd/devices/mtd_dataflash.c
+++ b/drivers/mtd/devices/mtd_dataflash.c
@@ -536,7 +536,7 @@ static int __devinit dataflash_probe(struct spi_device *spi)
         if (status <= 0 || status == 0xff) {
                 DEBUG(MTD_DEBUG_LEVEL1, "%s: status error %d\n",
                                 spi->dev.bus_id, status);
-                if (status == 0xff)
+                if (status == 0 || status == 0xff)
                         status = -ENODEV;
                 return status;
         }