From: Jack Morgenstein Date: Tue, 24 Mar 2015 13:18:39 +0000 (+0200) Subject: net/mlx4_core: Fix GEN_EQE accessing uninitialixed mutex X-Git-Tag: omap-for-v4.1/fixes-rc1~242^2~23^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bffb023ad2d44c0cfa8142ad8247391b32000998;p=pandora-kernel.git net/mlx4_core: Fix GEN_EQE accessing uninitialixed mutex We occasionally see in procedure mlx4_GEN_EQE that the driver tries to grab an uninitialized mutex. This can occur in only one of two ways: 1. We are trying to generate an async event on an uninitialized slave. 2. We are trying to generate an async event on an illegal slave number ( < 0 or > persist->num_vfs) or an inactive slave. To deal with #1: move the mutex initialization from specific slave init sequence in procedure mlx_master_do_cmd to mlx4_multi_func_init() (so that the mutex is always initialized for all slaves). To deal with #2: check in procedure mlx4_GEN_EQE that the slave number provided is in the proper range and that the slave is active. Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- Reading git-diff-tree failed