From: Christophe Vu-Brugier Date: Thu, 19 Mar 2015 13:30:13 +0000 (+0100) Subject: target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache... X-Git-Tag: omap-for-v4.1/fixes-rc1~291^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bc6548f372d8c829235095d91de99d8df79db6e;p=pandora-kernel.git target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache is 0 A check that rejects a CDB with FUA bit set if no write cache is emulated was added by the following commit: fde9f50 target: Add sanity checks for DPO/FUA bit usage The condition is as follows: if (!dev->dev_attrib.emulate_fua_write || !dev->dev_attrib.emulate_write_cache) However, this check is wrong if the backend device supports WCE but "emulate_write_cache" is disabled. This patch uses se_dev_check_wce() (previously named spc_check_dev_wce) to invoke transport->get_write_cache() if the device has a write cache or check the "emulate_write_cache" attribute otherwise. Reported-by: Christoph Hellwig Signed-off-by: Christophe Vu-Brugier Signed-off-by: Nicholas Bellinger --- Reading git-diff-tree failed