[ Upstream commit c7ad9ba0611c53cfe194223db02e3bca015f0674 ] When modprobe/rmmod/modprobe module, if platform_driver_register() fails, the kernel complained, proc_dir_entry 'driver/digicolor-usart' already registered WARNING: CPU: 1 PID: 5636 at fs/proc/generic.c:360 proc_register+0x19d/0x270 Fix this by adding uart_unregister_driver() when platform_driver_register() fails. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.
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