[PATCH 5/5] wifi: rtw89: Remove redundant pci_clear_master

Cai Huoqing cai.huoqing at linux.dev
Thu Mar 23 04:26:13 PDT 2023


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 at linux.dev>
---
 drivers/net/wireless/realtek/rtw89/pci.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index ec8bb5f10482..75bd3ac4dd71 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -2694,7 +2694,6 @@ static int rtw89_pci_claim_device(struct rtw89_dev *rtwdev,
 static void rtw89_pci_declaim_device(struct rtw89_dev *rtwdev,
 				     struct pci_dev *pdev)
 {
-	pci_clear_master(pdev);
 	pci_disable_device(pdev);
 }
 
-- 
2.34.1




More information about the ath10k mailing list