commit 66903461ffed0b66fc3e0200082d4e09365aacdc
author Dave Jiang <dave.jiang@intel.com> Mon Apr 11 15:08:55 2022 -0700
committer Vinod Koul <vkoul@kernel.org> Wed Apr 20 17:24:42 2022 +0530
tree 2d59a74da11d82cc161aa3aae9c4cdfc026811fe
parent bc3452cdfc468a65965d0ac397c940acb787ea4d

dmaengine: idxd: add RO check for wq max_batch_size write

Block wq_max_batch_size_store() when the device is configured as read-only
and not configurable.

Fixes: e7184b159dd3 ("dmaengine: idxd: add support for configurable max wq batch size")
Reported-by: Bernice Zhang <bernice.zhang@intel.com>
Tested-by: Bernice Zhang <bernice.zhang@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164971493551.2201159.1942042593642155209.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>