tree ad81e2421f4a43b512a80da4dc76a9b969e7999b
parent 0d8f3797ed5d7204c0238825fe434a949822c60e
author Joakim Tjernlund <joakim.tjernlund@infinera.com> 1519911581 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1525212787 -0700

mtd: cfi: cmdset_0002: Do not allow read/write to suspend erase block.

commit 7b70eb14392a7cf505f9b358d06c33b5af73d1e7 upstream.

Currently it is possible to read and/or write to suspend EB's.
Writing /dev/mtdX or /dev/mtdblockX from several processes may
break the flash state machine.

Taken from cfi_cmdset_0001 driver.

Signed-off-by: Joakim Tjernlund <joakim.tjernlund@infinera.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>