From: Teerth Reddy <teerth@xxxxxx>
The UART clocks should not be turned on in resume idle path. The UART clocks
should be turned on only when there is a uart wakeup event. This optimization
will help save power.
Signed-off-by: Raja Govindraj <govindraj.raja@xxxxxx>
Signed-off-by: Teerth Reddy <teerth@xxxxxx>
---
arch/arm/mach-omap2/serial.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index 3771254..d545eed 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -343,6 +343,7 @@ static void omap_uart_idle_timer(unsigned long data)
{
struct omap_uart_state *uart = (struct omap_uart_state *)data;
+ uart->timeout = DEFAULT_TIMEOUT;
omap_uart_allow_sleep(uart);
}
@@ -364,7 +365,6 @@ void omap_uart_resume_idle(int num)
list_for_each_entry(uart, &uart_list, node) {
if (num == uart->num) {
- omap_uart_enable_clocks(uart);
/* Check for IO pad wakeup */
if (cpu_is_omap34xx() && uart->padconf) {
@@ -436,7 +436,7 @@ static void omap_uart_idle_init(struct omap_uart_state *uart)
int ret;
uart->can_sleep = 0;
- uart->timeout = DEFAULT_TIMEOUT;
+ uart->timeout = 30 * HZ;
setup_timer(&uart->timer, omap_uart_idle_timer,
(unsigned long) uart);
if (uart->timeout)
--
1.5.4.3
--
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