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In the error handling in c_can_power_up(), there are two bugs: 1) c_can_pm_runtime_get_sync() will increase usage counter if device is not empty. Forgetting to call c_can_pm_runtime_put_sync() will result in a reference leak here. 2) c_can_reset_ram() operation will set start bit when enable is true. We should clear it in the error handling. We fix it by adding c_can_pm_runtime_put_sync() for 1), and c_can_reset_ram(enable is false) for 2) in the error handling. Fixes:8212003260("can: c_can: Add d_can suspend resume support") Fixes:52cde85acc("can: c_can: Add d_can raminit support") Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20201128133922.3276973-2-zhangqilong3@huawei.com [mkl: return "0" instead of "ret"] Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.