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authorCai Huoqing <cai.huoqing@linux.dev>2023-03-24 04:32:20 +0300
committerJon Mason <jdmason@kudzu.us>2023-07-08 18:02:37 +0300
commitd353fb4b70402f487c1c68bc0a86f526dc8384f3 (patch)
treebb11161159e2a596962f21fcf2c748228e446a51
parentf2748c6d768bbf3448da883a69e254816d7408b4 (diff)
downloadlinux-d353fb4b70402f487c1c68bc0a86f526dc8384f3.tar.xz
ntb: intel: Remove redundant pci_clear_master
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> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
-rw-r--r--drivers/ntb/hw/intel/ntb_hw_gen1.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/ntb/hw/intel/ntb_hw_gen1.c b/drivers/ntb/hw/intel/ntb_hw_gen1.c
index 60a4ebc7bf35..9ab836d0d4f1 100644
--- a/drivers/ntb/hw/intel/ntb_hw_gen1.c
+++ b/drivers/ntb/hw/intel/ntb_hw_gen1.c
@@ -1791,7 +1791,6 @@ static int intel_ntb_init_pci(struct intel_ntb_dev *ndev, struct pci_dev *pdev)
err_mmio:
err_dma_mask:
- pci_clear_master(pdev);
pci_release_regions(pdev);
err_pci_regions:
pci_disable_device(pdev);
@@ -1808,7 +1807,6 @@ static void intel_ntb_deinit_pci(struct intel_ntb_dev *ndev)
pci_iounmap(pdev, ndev->peer_mmio);
pci_iounmap(pdev, ndev->self_mmio);
- pci_clear_master(pdev);
pci_release_regions(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);