>From d8fa6589438a6992ed13b91c0124ed6cd8114eff Mon Sep 17 00:00:00 2001 From: Wenlin Kang Date: Thu, 21 May 2015 14:11:58 +0800 Subject: [PATCH] mtd: blktrans: change blktrans_getgeo return value Modify function blktrans_getgeo()'s return value to -EOPNOTSUPP when dev->tr->getgeo == NULL. We shouldn't make the return value to 0 when dev->tr->getgeo == NULL, because the function blktrans_getgeo() has an output value "hd_geometry" which is usually used by some application, if return 0, it will make some application get the wrong information. Signed-off-by: Wenlin Kang --- drivers/mtd/mtd_blkdevs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 2b0c5287..2012216 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -273,7 +273,7 @@ static int blktrans_getgeo(struct block_device *bdev, struct hd_geometry *geo) if (!dev->mtd) goto unlock; - ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : 0; + ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -EOPNOTSUPP; unlock: mutex_unlock(&dev->lock); blktrans_dev_put(dev); -- 1.7.9.5