[PATCH v5 21/22] gpio/omap: skip operations in runtime callbacks

Tarun Kanti DebBarma
2011-08-04T11:05:31Z

Most operations within runtime callbacks should be skipped when
*_runtime_get_sync() and *_runtime_put_sync() are called in probe(),
*_gpio_request() and *_gpio_free(). We just need clock enable/disable.

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
---
drivers/gpio/gpio-omap.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index ba743f5..eae955a 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1142,6 +1142,9 @@ static int omap_gpio_runtime_suspend(struct device *dev)
for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
clk_disable(bank->dbck);

+ if (!bank->mod_usage)
+ return 0;
+
/* If going to OFF, remove triggering for all
* non-wakeup GPIOs. Otherwise spurious IRQs will be
* generated. See OMAP2420 Errata item 1.101. */
@@ -1180,6 +1183,9 @@ static int omap_gpio_runtime_resume(struct device *dev)
for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
clk_enable(bank->dbck);

+ if (!bank->mod_usage)
+ return 0;
+
if (bank->get_context_loss_count) {
ctx_lost_cnt_after =
bank->get_context_loss_count(bank->dev);
--
1.7.0.4