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rpmsg: glink: Fix rpmsg_register_device err handling 

commit f7e714988e upstream.

The device release function is set before registering with rpmsg. If
rpmsg registration fails, the framework will call device_put(), which
invokes the release function. The channel create logic does not need to
free rpdev if rpmsg_register_device() fails and release is called.

Fixes: b4f8e52b89 ("rpmsg: Introduce Qualcomm RPM glink driver")
Cc: stable@vger.kernel.org
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Chris Lew 2019-10-04 15:27:00 -07:00 committed by Greg Kroah-Hartman
parent 1cbc40a07c
commit e7e682b164
1 changed files with 1 additions and 3 deletions
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4
drivers/rpmsg/qcom_glink_native.c
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@ -1423,15 +1423,13 @@ static int qcom_glink_rx_open(struct qcom_glink *glink, unsigned int rcid,
ret = rpmsg_register_device(rpdev);
if (ret)
goto free_rpdev;
goto rcid_remove;
channel->rpdev = rpdev;
}
return 0;
free_rpdev:
kfree(rpdev);
rcid_remove:
spin_lock_irqsave(&glink->idr_lock, flags);
idr_remove(&glink->rcids, channel->rcid);