mtd: m25p80: set writebufsize

BugLink: http://bugs.launchpad.net/bugs/981162

commit b54f47c8bcfc5f766bf13ec31bd7dd1d4726d33b upstream.

Using UBI on m25p80 can give messages like:

    UBI error: io_init: bad write buffer size 0 for 1 min. I/O unit

We need to initialize writebufsize; I think "page_size" is the correct
"bufsize", although I'm not sure. Comments?

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 884904d..9f9982f 100644 (file)
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -932,6 +932,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
        ppdata.of_node = spi->dev.of_node;
        flash->mtd.dev.parent = &spi->dev;
        flash->page_size = info->page_size;
+       flash->mtd.writebufsize = flash->page_size;
 
        if (info->addr_width)
                flash->addr_width = info->addr_width;