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17530e71e0
Every method in struct device_driver or structures derived from it like struct pci_driver MUST provide exclusion vs the driver's ->remove() method, usually by using device_lock(). Protect use of pci_driver->sriov_configure() by holding the device lock while calling it. The PCI core sets the pci_dev->driver pointer in local_pci_probe() before calling ->probe() and only clears it after ->remove(). This means driver's ->sriov_configure() callback will happily race with probe() and remove(), most likely leading to BUGs, since drivers don't expect this. Remove the iov lock completely, since we remove the last user. [bhelgaas: changelog, thanks to Christoph for locking rule] Link: http://lkml.kernel.org/r/20170522225023.14010-1-jakub.kicinski@netronome.com Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> |
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| README | ||
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.