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authorBrian Norris <computersforpeace@gmail.com>2015-05-21 10:44:32 -0700
committerBrian Norris <computersforpeace@gmail.com>2015-05-21 10:44:32 -0700
commitc4a3f13c2ab997617eaf7020af33b057a68285fd (patch)
tree4dfd5c65ea9dfa43ba0e02a6ac524df0c8355df4 /drivers/mtd
parent01d0afddf37cbb4da8581d6dc9bfa5b63bae3390 (diff)
mtd: blktrans: use better error code for unimplemented ioctl()
In commit 50183936254b ("mtd: blktrans: change blktrans_getgeo return value") we fixed the problem that ioctl(HDIO_GETGEO) might return 0 (success) for mtdblock devices which did not implement the feature and would leave a blank (zero) result. But now, let's get the error code right. Other code paths on this ioctl tend to use -ENOTTY to notify the user that the ioctl() is not supported for the device, so let's use that instead of -EOPNOTSUPP. Suggested-by: Richard Weinberger <richard@nod.at> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/mtd_blkdevs.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index c545c9325acf..41acc507b22e 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -278,7 +278,7 @@ 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) : -EOPNOTSUPP;
+ ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -ENOTTY;
unlock:
mutex_unlock(&dev->lock);
blktrans_dev_put(dev);