[PATCH] isdn: mISDN: netjet: Remove redundant pci_clear_master

[PATCH] isdn: mISDN: netjet: Remove redundant pci_clear_master

[Cai Huoqing]

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/isdn/hardware/mISDN/netjet.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/isdn/hardware/mISDN/netjet.c b/drivers/isdn/hardware/mISDN/netjet.c
index f8447135a902..566c790a9481 100644
--- a/drivers/isdn/hardware/mISDN/netjet.c
+++ b/drivers/isdn/hardware/mISDN/netjet.c
@@ -970,7 +970,6 @@ nj_release(struct tiger_hw *card)
 	write_lock_irqsave(&card_lock, flags);
 	list_del(&card->list);
 	write_unlock_irqrestore(&card_lock, flags);
-	pci_clear_master(card->pdev);
 	pci_disable_device(card->pdev);
 	pci_set_drvdata(card->pdev, NULL);
 	kfree(card);
-- 
2.34.1

Re: [PATCH] isdn: mISDN: netjet: Remove redundant pci_clear_master

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Thu, 23 Mar 2023 19:59:11 +0800 you 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;
> 
> [...]

Here is the summary with links:
  - isdn: mISDN: netjet: Remove redundant pci_clear_master
    https://git.kernel.org/netdev/net-next/c/950bfdcf17ec

You are awesome, thank you!
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