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ntb_hw_amd: Remove redundant pci_clear_master

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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 <cai.huoqing@linux.dev>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Cai Huoqing 2023-03-24 09:32:18 +08:00 committed by Jon Mason
parent cb2a6d1735
commit da6b4dc49e
1 changed files with 0 additions and 2 deletions
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2
drivers/ntb/hw/amd/ntb_hw_amd.c
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@ -1194,7 +1194,6 @@ static int amd_ntb_init_pci(struct amd_ntb_dev *ndev,
return 0;
err_dma_mask:
pci_clear_master(pdev);
pci_release_regions(pdev);
err_pci_regions:
pci_disable_device(pdev);
@ -1209,7 +1208,6 @@ static void amd_ntb_deinit_pci(struct amd_ntb_dev *ndev)
pci_iounmap(pdev, ndev->self_mmio);
pci_clear_master(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);