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iwmc3200wifi: fix potential kernel oops on module removal

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The iwm_if_free() is called before destroy_workqueue for isr_wq on
device remove method. But if there is still some pending work in
the isr_wq, the required data structures are already freed at this
point. This leeds a kernel oops. The patch fixes this problem by
moving iwm_if_free after destroy_workqueue.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Samuel Ortiz <samuel.ortiz@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Zhu Yi 2009-06-15 21:59:48 +02:00 committed by John W. Linville
parent d7e057dca3
commit 4e9aa52e36
1 changed files with 2 additions and 2 deletions
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4
drivers/net/wireless/iwmc3200wifi/sdio.c
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@ -479,10 +479,10 @@ static void iwm_sdio_remove(struct sdio_func *func)
struct iwm_priv *iwm = hw_to_iwm(hw);
struct device *dev = &func->dev;
iwm_debugfs_exit(iwm);
iwm_if_remove(iwm);
iwm_if_free(iwm);
destroy_workqueue(hw->isr_wq);
iwm_debugfs_exit(iwm);
iwm_if_free(iwm);
sdio_set_drvdata(func, NULL);