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If the io_subchannel_driver is unbound from a subchannel it bluntly kills all I/O on the subchannel and sets the ccw_device state to not operable before deregistering the ccw_device. However, for online devices we should set the device offline (disband path groups etc.) which does not happen if the device is in not oper state. Simply deregister the ccw device - ccw_device_remove is smart enough to set the device offline properly. If everything fails call io_subchannel_quiesce afterwards as a safeguard. Reported-by: Shalini Chellathurai Saroja <shalini@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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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.