Commit 91cf351a by Bai Ping

MLK-10439: arm: imx: fix system hang after resume back under low busfreq

System will be no response after resume back under low busfreq mode. The root cause of this issue is that when the system is under ultra_low_bus_freq mode on i.MX6SL, resume process has a low bus mode deamon in background, cause system enter low bus mode twice, busfreq driver will notify thermal driver to turn off PLL3 twice, and cause PLL3 usecount incorrect and UART no message out. Signed-off-by: 's avatarBai Ping <b51503@freescale.com>
parent c8b88cd2
......@@ -786,7 +786,7 @@ void __init imx6_busfreq_map_io(void)
static void bus_freq_daemon_handler(struct work_struct *work)
{
mutex_lock(&bus_freq_mutex);
if ((!low_bus_freq_mode) && (high_bus_count == 0) &&
if ((!low_bus_freq_mode) && (!ultra_low_bus_freq_mode) && (high_bus_count == 0) &&
(med_bus_count == 0) && (audio_bus_count == 0))
set_low_bus_freq();
mutex_unlock(&bus_freq_mutex);
......
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