From 8c08947b7c4f4496e7c23be970121280fcb6cbf5 Mon Sep 17 00:00:00 2001 From: Chen-Yu Tsai Date: Mon, 17 Dec 2018 12:04:40 +0800 Subject: Bluetooth: hci_bcm: Simplify clk_get error handling The driver currently checks the clk pointer for an error condition, as returned by clk_get, before every invocation of the clk consumer API. This is redundant if the goal is simply to ignore the errors, thereby making the clk optional. The clk consumer API already checks if the pointer is NULL or not. Simplify the code a bit by assigning NULL to the clk pointer if the error condition is one we want to ignore, which is every error except deferred probing. Tested-by: Ondrej Jirman Signed-off-by: Chen-Yu Tsai Signed-off-by: Marcel Holtmann --- drivers/bluetooth/hci_bcm.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c index 800132369134..ff73ecb8215f 100644 --- a/drivers/bluetooth/hci_bcm.c +++ b/drivers/bluetooth/hci_bcm.c @@ -214,7 +214,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) { int err; - if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) { + if (powered && !dev->clk_enabled) { err = clk_prepare_enable(dev->clk); if (err) return err; @@ -228,7 +228,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) if (err) goto err_revert_shutdown; - if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) + if (!powered && dev->clk_enabled) clk_disable_unprepare(dev->clk); dev->clk_enabled = powered; @@ -238,7 +238,7 @@ static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) err_revert_shutdown: dev->set_shutdown(dev, !powered); err_clk_disable: - if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) + if (powered && !dev->clk_enabled) clk_disable_unprepare(dev->clk); return err; } @@ -911,6 +911,10 @@ static int bcm_get_resources(struct bcm_device *dev) if (dev->clk == ERR_PTR(-EPROBE_DEFER)) return PTR_ERR(dev->clk); + /* Ignore all other errors as before */ + if (IS_ERR(dev->clk)) + dev->clk = NULL; + dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", GPIOD_OUT_LOW); if (IS_ERR(dev->device_wakeup)) -- cgit v1.2.3