net/ism: 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 <cai.huoqing@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index 05749c87799067665e5a3c54ad4450e5c539d9d4..8acb9eba691b5ec9f804f8cf647f9752ee54a345 100644 (file)
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -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);