mwifiex: add PCIe shutdown handler to avoid system hang on reboot

If reboot command is issued when device is in connected state,
system hangs while booting. This issue is fixed by doing cleanup
in shutdown handler.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c
index 4a57eb45f9a8..dce648682694 100644
--- a/drivers/net/wireless/mwifiex/pcie.c
+++ b/drivers/net/wireless/mwifiex/pcie.c
@@ -235,6 +235,14 @@ static void mwifiex_pcie_remove(struct pci_dev *pdev)
         kfree(card);
 }
 
+static void mwifiex_pcie_shutdown(struct pci_dev *pdev)
+{
+        user_rmmod = 1;
+        mwifiex_pcie_remove(pdev);
+
+        return;
+}
+
 static DEFINE_PCI_DEVICE_TABLE(mwifiex_ids) = {
         {
                 PCIE_VENDOR_ID_MARVELL, PCIE_DEVICE_ID_MARVELL_88W8766P,
@@ -268,6 +276,7 @@ static struct pci_driver __refdata mwifiex_pcie = {
                 .pm = &mwifiex_pcie_pm_ops,
         },
 #endif
+        .shutdown = mwifiex_pcie_shutdown,
 };
 
 /*