Revert "msm: kgsl: flush device workqueue before stop"

This reverts commit f8e5cd2af7b43bc92e297fdb549d5607df2fee97.

Change-Id: Ie2902a33ffca298a27d9ef811e7e57a6d3630c5f
Signed-off-by: Suman Tatiraju <sumant@codeaurora.org>
diff --git a/drivers/gpu/msm/adreno.c b/drivers/gpu/msm/adreno.c
index 79a0e0b..73d00b3 100644
--- a/drivers/gpu/msm/adreno.c
+++ b/drivers/gpu/msm/adreno.c
@@ -581,6 +581,7 @@
 
 	device->ftbl->irqctrl(device, 0);
 	kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
+	del_timer_sync(&device->idle_timer);
 
 	/* Power down the device */
 	kgsl_pwrctrl_disable(device);