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net/ism: 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: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cai Huoqing 2023-03-23 20:00:43 +08:00 committed by David S. Miller
parent 950bfdcf17
commit c85bd3dacc
1 changed files with 0 additions and 2 deletions
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2
drivers/s390/net/ism_drv.c
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@ -675,7 +675,6 @@ static int ism_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
err_resource:
pci_clear_master(pdev);
pci_release_mem_regions(pdev);
err_disable:
pci_disable_device(pdev);
@ -738,7 +737,6 @@ static void ism_remove(struct pci_dev *pdev)
ism_dev_exit(ism);
mutex_unlock(&ism_dev_list.mutex);
pci_clear_master(pdev);
pci_release_mem_regions(pdev);
pci_disable_device(pdev);
device_del(&ism->dev);