pds_core: remove redundant pci_clear_master()

do_pci_disable_device() disable PCI bus-mastering as following:
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 pci_disable_device() sets dev->is_busmaster to 0.

pci_enable_device() is called only once before calling to
pci_disable_device() and such pci_clear_master() is not needed. So remove
redundant pci_clear_master().

Also rename goto label 'err_out_clear_master' to 'err_out_disable_device'.

Signed-off-by: Yu Liao <liaoyu15@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Acked-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://lore.kernel.org/r/20230817025709.2023553-1-liaoyu15@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/amd/pds_core/main.c b/drivers/net/ethernet/amd/pds_core/main.c
index 6727579..3a45bf4 100644 (file)
--- a/drivers/net/ethernet/amd/pds_core/main.c
+++ b/drivers/net/ethernet/amd/pds_core/main.c
@@ -367,14 +367,13 @@ static int pdsc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                err = pdsc_init_vf(pdsc);
        if (err) {
                dev_err(dev, "Cannot init device: %pe\n", ERR_PTR(err));
-               goto err_out_clear_master;
+               goto err_out_disable_device;
        }
 
        clear_bit(PDSC_S_INITING_DRIVER, &pdsc->state);
        return 0;
 
-err_out_clear_master:
-       pci_clear_master(pdev);
+err_out_disable_device:
        pci_disable_device(pdev);
 err_out_free_ida:
        ida_free(&pdsc_ida, pdsc->uid);
@@ -439,7 +438,6 @@ static void pdsc_remove(struct pci_dev *pdev)
                pci_release_regions(pdev);
        }
 
-       pci_clear_master(pdev);
        pci_disable_device(pdev);
 
        ida_free(&pdsc_ida, pdsc->uid);