| Message ID | 20230323112613.7550-1-cai.huoqing@linux.dev (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | f812e2a9f85d6bea78957ccb5197e4491316848b |
| Delegated to: | Kalle Valo |
| Headers | show |
| Series | [1/5] wifi: ath11k: Remove redundant pci_clear_master | expand |
On Thu, Mar 23, 2023 at 07:26:09PM +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>
Cai Huoqing <cai.huoqing@linux.dev> 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> > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> 3 patches applied to ath-next branch of ath.git, thanks. f812e2a9f85d wifi: ath11k: Remove redundant pci_clear_master 76008fc13b09 wifi: ath10k: Remove redundant pci_clear_master b9235aef8492 wifi: ath12k: Remove redundant pci_clear_master
diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c index 0aeef2948ff5..522d01e5e11c 100644 --- a/drivers/net/wireless/ath/ath11k/pci.c +++ b/drivers/net/wireless/ath/ath11k/pci.c @@ -540,7 +540,7 @@ static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev) if (!ab->mem) { ath11k_err(ab, "failed to map pci bar %d\n", ATH11K_PCI_BAR_NUM); ret = -EIO; - goto clear_master; + goto release_region; } ab->mem_ce = ab->mem; @@ -548,8 +548,6 @@ static int ath11k_pci_claim(struct ath11k_pci *ab_pci, struct pci_dev *pdev) ath11k_dbg(ab, ATH11K_DBG_BOOT, "boot pci_mem 0x%pK\n", ab->mem); return 0; -clear_master: - pci_clear_master(pdev); release_region: pci_release_region(pdev, ATH11K_PCI_BAR_NUM); disable_device: @@ -565,7 +563,6 @@ static void ath11k_pci_free_region(struct ath11k_pci *ab_pci) pci_iounmap(pci_dev, ab->mem); ab->mem = NULL; - pci_clear_master(pci_dev); pci_release_region(pci_dev, ATH11K_PCI_BAR_NUM); if (pci_is_enabled(pci_dev)) pci_disable_device(pci_dev);
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/ath11k/pci.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)