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| author | Romain Izard <romain.izard.pro@gmail.com> | 2018-01-29 11:18:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-24 09:32:05 +0200 |
| commit | 782635ba966ee2adc898adb9af2bc240b1aded43 (patch) | |
| tree | ff47d8bac2ffce12547af73422f5981d9a4ab944 /kernel/resource.c | |
| parent | 75ee85667473444fe10765850e4edc2727f9da75 (diff) | |
ubi: Fix error for write access
commit 78a8dfbabbece22bee58ac4cb26cab10e7a19c5d upstream.
When opening a device with write access, ubiblock_open returns an error
code. Currently, this error code is -EPERM, but this is not the right
value.
The open function for other block devices returns -EROFS when opening
read-only devices with FMODE_WRITE set. When used with dm-verity, the
veritysetup userspace tool is expecting EROFS, and refuses to use the
ubiblock device.
Use -EROFS for ubiblock as well. As a result, veritysetup accepts the
ubiblock device as valid.
Cc: stable@vger.kernel.org
Fixes: 9d54c8a33eec (UBI: R/O block driver on top of UBI volumes)
Signed-off-by: Romain Izard <romain.izard.pro@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/resource.c')
0 files changed, 0 insertions, 0 deletions