From: Stefan Roese Date: Fri, 8 Oct 2010 12:41:27 +0000 (+0200) Subject: mtd: physmap_of: Loop through all "reg" tuples for mapping X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=940fe282aeda984d32ca9e3d2be7df1b4c5161b1;p=openwrt%2Fstaging%2Fblogic.git mtd: physmap_of: Loop through all "reg" tuples for mapping This patch changes the loop over the "reg" tuples to not exit directly upon of_address_to_resource() failure but to continue with the next "reg" tuple instead. This failure could be due to size = 0, which might be passed via the device-tree. This is needed for boards, where a "reg" tuple might have size 0 (of_address_to_resource() returns with EINVAL when size = 0). Example: Fully equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00400000>; Partially equipped board: reg = <0 0x00000000 0x00400000 0 0x00400000 0x00000000>; This could be the case on boards with runtime detection of multiple NOR flash configurations where the detected flash size is inserted into the dtb in U-Boot. Signed-off-by: Stefan Roese Signed-off-by: David Woodhouse --- diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index ec4011c3d5f2..9861814aa027 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -267,9 +267,11 @@ static int __devinit of_flash_probe(struct platform_device *dev, for (i = 0; i < count; i++) { err = -ENXIO; if (of_address_to_resource(dp, i, &res)) { - dev_err(&dev->dev, "Can't get IO address from device" - " tree\n"); - goto err_out; + /* + * Continue with next register tuple if this + * one is not mappable + */ + continue; } dev_dbg(&dev->dev, "of_flash device: %.8llx-%.8llx\n",