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rt2x00pci: Disable memory-write-invalidate when the driver exits 

The driver calls pci_set_mwi to enable memory-write-invalidate when it
is initialized, but does not call pci_clear_mwi when it is removed. Many
other drivers calls pci_clear_mwi when pci_set_mwi is called, such as
r8169, 8139cp and e1000.

This patch adds pci_clear_mwi in error handling and removal procedure,
which can fix the problem.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Jia-Ju Bai 2016-01-04 15:55:38 +08:00 committed by Kalle Valo
parent 8ba83d4daa
commit 7683fe016c
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/ralink/rt2x00/rt2x00pci.c
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@ -149,6 +149,7 @@ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops)
ieee80211_free_hw(hw);
exit_release_regions:
pci_clear_mwi(pci_dev);
pci_release_regions(pci_dev);
exit_disable_device:
@ -173,6 +174,7 @@ void rt2x00pci_remove(struct pci_dev *pci_dev)
/*
* Free the PCI device data.
*/
pci_clear_mwi(pci_dev);
pci_disable_device(pci_dev);
pci_release_regions(pci_dev);
}