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| author | Cai Huoqing <[email protected]> | 2023-03-24 01:32:20 +0000 |
|---|---|---|
| committer | Jon Mason <[email protected]> | 2023-07-08 15:02:37 +0000 |
| commit | d353fb4b70402f487c1c68bc0a86f526dc8384f3 (patch) | |
| tree | bb11161159e2a596962f21fcf2c748228e446a51 /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | ntb: epf: Remove redundant pci_clear_master (diff) | |
| download | kernel-d353fb4b70402f487c1c68bc0a86f526dc8384f3.tar.gz kernel-d353fb4b70402f487c1c68bc0a86f526dc8384f3.zip | |
ntb: intel: Remove redundant pci_clear_master
Remove pci_clear_master to simplify the code,
the bus-mastering is also cleared in do_pci_disable_device,
like this:
./drivers/pci/pci.c:2197
static void do_pci_disable_device(struct pci_dev *dev)
{
u16 pci_command;
pci_read_config_word(dev, PCI_COMMAND, &pci_command);
if (pci_command & PCI_COMMAND_MASTER) {
pci_command &= ~PCI_COMMAND_MASTER;
pci_write_config_word(dev, PCI_COMMAND, pci_command);
}
pcibios_disable_device(dev);
}.
And dev->is_busmaster is set to 0 in pci_disable_device.
Signed-off-by: Cai Huoqing <[email protected]>
Acked-by: Dave Jiang <[email protected]>
Signed-off-by: Jon Mason <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions