| Message ID | 20230323112613.7550-2-cai.huoqing@linux.dev |
|---|---|
| State | New |
| Headers | show |
| Series | [1/5] wifi: ath11k: Remove redundant pci_clear_master | expand |
On Thu, Mar 23, 2023 at 07:26:10PM +0800, Cai Huoqing wrote: > 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> Reviewed-by: Simon Horman <simon.horman@corigine.com>
diff --git a/drivers/net/wireless/ath/ath10k/pci.c b/drivers/net/wireless/ath/ath10k/pci.c index 728d607289c3..a7f44f6335fb 100644 --- a/drivers/net/wireless/ath/ath10k/pci.c +++ b/drivers/net/wireless/ath/ath10k/pci.c @@ -3406,15 +3406,12 @@ static int ath10k_pci_claim(struct ath10k *ar) if (!ar_pci->mem) { ath10k_err(ar, "failed to iomap BAR%d\n", BAR_NUM); ret = -EIO; - goto err_master; + goto err_region; } ath10k_dbg(ar, ATH10K_DBG_BOOT, "boot pci_mem 0x%pK\n", ar_pci->mem); return 0; -err_master: - pci_clear_master(pdev); - err_region: pci_release_region(pdev, BAR_NUM); @@ -3431,7 +3428,6 @@ static void ath10k_pci_release(struct ath10k *ar) pci_iounmap(pdev, ar_pci->mem); pci_release_region(pdev, BAR_NUM); - pci_clear_master(pdev); pci_disable_device(pdev); }
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/ath/ath10k/pci.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-)