[PATCH 3.17 221/319] usb: chipidea: Fix oops when removing the ci_hdrc module

From: Greg Kroah-Hartman
Date: Tue Nov 11 2014 - 20:31:07 EST


3.17-stable review patch. If anyone has any objections, please let me know.

------------------

From: Torsten Fleischer <to-fleischer@xxxxxxxxxxx>

commit 9680b60ed79edaf52f84b65cbb20859bbb26cb68 upstream.

The call of 'kfree(ci->hw_bank.regmap)' in ci_hdrc_remove() sometimes causes
a kernel oops when removing the ci_hdrc module.

Since there is no separate memory allocated for the ci->hw_bank.regmap array,
there is no need to free it.

Signed-off-by: Torsten Fleischer <to-fleischer@xxxxxxxxxxx>
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/usb/chipidea/core.c | 1 -
1 file changed, 1 deletion(-)

--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -732,7 +732,6 @@ static int ci_hdrc_remove(struct platfor
ci_role_destroy(ci);
ci_hdrc_enter_lpm(ci, true);
usb_phy_shutdown(ci->transceiver);
- kfree(ci->hw_bank.regmap);

return 0;
}


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