platform/chrome: cros_ec_ishtp: Fix a double-unlock issue
[ Upstream commitaaa3cbbac3
] In function cros_ec_ishtp_probe(), "up_write" is already called before function "cros_ec_dev_init". But "up_write" will be called again after the calling of the function "cros_ec_dev_init" failed. Thus add a call of the function “down_write” in this if branch for the completion of the exception handling. Fixes:26a14267af
("platform/chrome: Add ChromeOS EC ISHTP driver") Signed-off-by: Qiushi Wu <wu000273@umn.edu> Tested-by: Mathew King <mathewk@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -645,8 +645,10 @@ static int cros_ec_ishtp_probe(struct ishtp_cl_device *cl_device)
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/* Register croc_ec_dev mfd */
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rv = cros_ec_dev_init(client_data);
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if (rv)
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if (rv) {
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down_write(&init_lock);
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goto end_cros_ec_dev_init_error;
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}
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return 0;
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