diff options
| author | Cai Huoqing <cai.huoqing@linux.dev> | 2023-03-23 14:37:09 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-08 23:45:38 +0300 |
| commit | a74d9a3f4fc96520c8f85cd372a16a0b29430701 (patch) | |
| tree | 7c2d68cda0781629381a6ac52c22febc33cdc225 /drivers | |
| parent | 890a3ee3ce416e2f1aed41718a8c1d42c82cf1b2 (diff) | |
| download | linux-a74d9a3f4fc96520c8f85cd372a16a0b29430701.tar.xz | |
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 <cai.huoqing@linux.dev>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rapidio/devices/tsi721.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 0a42d6a2af24..83323c3d10af 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); } |