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In iommu_bus_notifier(), when action is BUS_NOTIFY_ADD_DEVICE, it will return 'ops->add_device(dev)' directly. But ops->add_device will return ERR_VAL, such as -ENODEV. These value will make notifier_call_chain() not to traverse the remain nodes in struct notifier_block list. This patch revises iommu_bus_notifier() to return NOTIFY_DONE when some errors happened in ops->add_device(). Signed-off-by: zhichang.yuan <yuanzhichang@hisilicon.com> Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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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.