]> git.baikalelectronics.ru Git - kernel.git/commit
mtd: Make sure mtd->erasesize is valid even if the partition is of size 0
authorBoris Brezillon <bbrezillon@kernel.org>
Wed, 30 Jan 2019 11:55:52 +0000 (12:55 +0100)
committerBoris Brezillon <bbrezillon@kernel.org>
Tue, 5 Feb 2019 23:02:51 +0000 (00:02 +0100)
commit57db55846f28b7e0ee40eb4b46061ebe41a3f347
tree528a506354beb97de16e105d81babf3d3ad813d2
parentcf866fcdb919ed675f86850e11757ca182e76c91
mtd: Make sure mtd->erasesize is valid even if the partition is of size 0

Commit 3b570ca63b6a ("mtd: Do not allow MTD devices with inconsistent
erase properties") introduced a check to make sure ->erasesize and
->_erase values are consistent with the MTD_NO_ERASE flag.
This patch did not take the 0 bytes partition case into account which
can happen when the defined partition is outside the flash device memory
range. Fix that by setting the partition erasesize to the parent
erasesize.

Fixes: 3b570ca63b6a ("mtd: Do not allow MTD devices with inconsistent erase properties")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: <stable@vger.kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Boris Brezillon <bbrezillon@kernel.org>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
drivers/mtd/mtdpart.c