[PATCH v5 21/22] gpio/omap: skip operations in runtime callbacks
From: Tarun Kanti DebBarma <hidden>
Date: 2011-08-04 11:04:52
Also in:
linux-omap
Subsystem:
gpio subsystem, omap gpio driver, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Grygorii Strashko, Santosh Shilimkar, Kevin Hilman, Linus Torvalds
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 <redacted> --- 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