1__PCI_RESET_FUNCTION(9) Hardware Interfaces __PCI_RESET_FUNCTION(9)
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6 __pci_reset_function - reset a PCI device function
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9 int __pci_reset_function(struct pci_dev * dev);
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12 dev
13 PCI device to reset
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16 Some devices allow an individual function to be reset without affecting
17 other functions in the same device. The PCI device must be responsive
18 to PCI config space in order to use this function.
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20 The device function is presumed to be unused when this function is
21 called. Resetting the device will make the contents of PCI
22 configuration space random, so any caller of this must be prepared to
23 reinitialise the device including MSI, bus mastering, BARs, decoding IO
24 and memory spaces, etc.
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26 Returns 0 if the device function was successfully reset or negative if
27 the device doesn't support resetting a single function.
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30Kernel Hackers Manual 3.10 June 2019 __PCI_RESET_FUNCTION(9)