diff options
| author | Avinash Patil <patila@marvell.com> | 2013-02-21 00:12:58 -0500 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2013-02-22 14:50:46 -0500 |
| commit | 48f4d91679c0e0b26747f8adbb18e5212eb6d621 (patch) | |
| tree | b569e3d8640cc3ef82ac4c930d46b723dfd7dd17 /net | |
| parent | 1499d9fa54a41942973bfc2c4ab12ccc5f1e15de (diff) | |
mwifiex: fix system freeze while reloading driver
Unload sequence for mwifiex PCIE driver is as follows:
1. Invoking cleanup module from kernel results into
pci_unregister_driver
2. Kernel invokes PCIE remove() handler which disconnects all
interfaces.
3. One step during disconnect is to clean PCIE TX rings.
During this we read txbd_rdptr from FW.
While loading driver next time, we see pci_enable_device()
results into system freeze. This may have happened because we
accessed PCI device after unregistering from bus driver.
Removing this ioread() operation resolves this bug.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions