3.16.63-rc1 review patch. If anyone has any objections, please let me know.
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From: Geert Uytterhoeven geert+renesas@glider.be
commit 697ee786f15d7b65c7f3045d45fe3a05d28e0911 upstream.
When testing bind/unbind on r8a7791/koelsch:
WARNING: CPU: 1 PID: 697 at lib/debugobjects.c:329 debug_print_object+0x8c/0xb4 ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x10
This happens if the workqueue runs after the device has been unbound. Fix this by cancelling any queued work during remove.
Fixes: e0a5172e9eec7f0d ("thermal: rcar: add interrupt support") Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Reviewed-by: Niklas Söderlund niklas.soderlund+renesas@ragnatech.se Signed-off-by: Eduardo Valentin edubezval@gmail.com [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings ben@decadent.org.uk --- drivers/thermal/rcar_thermal.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -464,6 +464,7 @@ error_unregister: rcar_thermal_for_each_priv(priv, common) { if (rcar_has_irq_support(priv)) rcar_thermal_irq_disable(priv); + cancel_delayed_work_sync(&priv->work); thermal_zone_device_unregister(priv->zone); }