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authorTomas Winkler <tomas.winkler@intel.com>2018-08-27 21:40:15 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-09-12 09:14:24 +0200
commit69bf5313035926b0b6a6578de4f3168a8f5c19b8 (patch)
tree188717caf91dd6bbd1d8c8471503b0167aada0ac /drivers/misc/mei/bus.c
parentmei: fix use-after-free in mei_cl_write (diff)
downloadlinux-69bf5313035926b0b6a6578de4f3168a8f5c19b8.tar.xz
linux-69bf5313035926b0b6a6578de4f3168a8f5c19b8.zip
mei: bus: fix hw module get/put balance
In case the device is not connected it doesn't 'get' hw module and hence should not 'put' it on disable. Cc: <stable@vger.kernel.org> 4.16+ Fixes:'commit 257355a44b99 ("mei: make module referencing local to the bus.c")' Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=200455 Tested-by: Georg Müller <georgmueller@gmx.net> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/bus.c')
-rw-r--r--drivers/misc/mei/bus.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 7bba62a72921..13c6c9a2248a 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -616,9 +616,8 @@ int mei_cldev_disable(struct mei_cl_device *cldev)
if (err < 0)
dev_err(bus->dev, "Could not disconnect from the ME client\n");
-out:
mei_cl_bus_module_put(cldev);
-
+out:
/* Flush queues and remove any pending read */
mei_cl_flush_queues(cl, NULL);
mei_cl_unlink(cl);