[PATCH 4/5] wifi: rtw88: Remove redundant pci_clear_master

Cai Huoqing
2023-03-23T11:32:25Z

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>
---
drivers/net/wireless/realtek/rtw88/pci.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw88/pci.c b/drivers/net/wireless/realtek/rtw88/pci.c
index b4bd831c9845..60145d2f3e5a 100644
--- a/drivers/net/wireless/realtek/rtw88/pci.c
+++ b/drivers/net/wireless/realtek/rtw88/pci.c
@@ -1552,7 +1552,6 @@ static int rtw_pci_claim(struct rtw_dev *rtwdev, struct pci_dev *pdev)

static void rtw_pci_declaim(struct rtw_dev *rtwdev, struct pci_dev *pdev)
{
- pci_clear_master(pdev);
pci_disable_device(pdev);
}

--
2.34.1