iwmc3200wifi: SDIO disable race fix

When calling sdio->bus_disable(), we are flushing the command lists before
disabling the sdio function. We can thus potentially get a command response
after having flushed the command list.
To avoid that race, we have to call iwm_reset() after disabling the sdio
function.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/sdio.c b/drivers/net/wireless/iwmc3200wifi/sdio.c
index 38026b70a2f9..cf86294f719b 100644
--- a/drivers/net/wireless/iwmc3200wifi/sdio.c
+++ b/drivers/net/wireless/iwmc3200wifi/sdio.c
@@ -224,8 +224,6 @@ static int if_sdio_disable(struct iwm_priv *iwm)
         struct iwm_sdio_priv *hw = iwm_to_if_sdio(iwm);
         int ret;
 
-        iwm_reset(iwm);
-
         sdio_claim_host(hw->func);
         sdio_writeb(hw->func, 0, IWM_SDIO_INTR_ENABLE_ADDR, &ret);
         if (ret < 0)
@@ -237,6 +235,8 @@ static int if_sdio_disable(struct iwm_priv *iwm)
 
         iwm_sdio_rx_free(hw);
 
+        iwm_reset(iwm);
+
         IWM_DBG_SDIO(iwm, INFO, "IWM SDIO disable\n");
 
         return 0;