If we have sdio work requests received when sdio card reset is
happening, we may end up accessing older save_adapter pointer
later which is already freed during card reset.
This patch solves the problem by cancelling those pending requests.

Signed-off-by: Amitkumar Karwar <akar...@marvell.com>
---
 drivers/net/wireless/marvell/mwifiex/sdio.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c 
b/drivers/net/wireless/marvell/mwifiex/sdio.c
index db01794..44eb65a 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -2229,6 +2229,12 @@ static void mwifiex_recreate_adapter(struct 
sdio_mmc_card *card)
        mmc_hw_reset(func->card->host);
        sdio_release_host(func);
 
+       /* Previous save_adapter won't be valid after this. We will cancel
+        * pending work requests.
+        */
+       clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &iface_work_flags);
+       clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &iface_work_flags);
+
        mwifiex_sdio_probe(func, device_id);
 }
 
-- 
1.9.1

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