lkml.org 
[lkml]   [2023]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 3/3] can: kvaser_pciefd: Remove redundant pci_clear_master
Date
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/can/kvaser_pciefd.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/net/can/kvaser_pciefd.c b/drivers/net/can/kvaser_pciefd.c
index bcad11709bc9..53e8a914c88b 100644
--- a/drivers/net/can/kvaser_pciefd.c
+++ b/drivers/net/can/kvaser_pciefd.c
@@ -1907,7 +1907,6 @@ static void kvaser_pciefd_remove(struct pci_dev *pdev)

free_irq(pcie->pci->irq, pcie);

- pci_clear_master(pdev);
pci_iounmap(pdev, pcie->reg_base);
pci_release_regions(pdev);
pci_disable_device(pdev);
--
2.34.1
\
 
 \ /
  Last update: 2023-03-27 01:14    [W:1.000 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site