From a74d9a3f4fc96520c8f85cd372a16a0b29430701 Mon Sep 17 00:00:00 2001 From: Cai Huoqing Date: Thu, 23 Mar 2023 19:37:09 +0800 Subject: [PATCH] rapidio/tsi721: 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. Link: https://lkml.kernel.org/r/20230323113711.10523-1-cai.huoqing@linux.dev Signed-off-by: Cai Huoqing Cc: Alexandre Bounine Cc: Matt Porter Cc: Tetsuo Handa Signed-off-by: Andrew Morton --- drivers/rapidio/devices/tsi721.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 0a42d6a2af24f..83323c3d10aff 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -2924,7 +2924,6 @@ err_unmap_bars: iounmap(priv->odb_base); err_free_res: pci_release_regions(pdev); - pci_clear_master(pdev); err_disable_pdev: pci_disable_device(pdev); err_clean: @@ -2962,7 +2961,6 @@ static void tsi721_remove(struct pci_dev *pdev) pci_disable_msi(priv->pdev); #endif pci_release_regions(pdev); - pci_clear_master(pdev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); kfree(priv); @@ -2977,7 +2975,6 @@ static void tsi721_shutdown(struct pci_dev *pdev) tsi721_disable_ints(priv); tsi721_dma_stop_all(priv); - pci_clear_master(pdev); pci_disable_device(pdev); } -- 2.30.2