diff mbox series

[v2,2/9] usb: cdns3: drd: removed not needed variables initialization

Message ID 20200713100554.28530-3-pawell@cadence.com (mailing list archive)
State Mainlined
Commit 27afe1661275213adee3f8dc08b3610abcbca678
Headers show
Series usb: cdns3: Improvements for cdns3 DRD code | expand

Commit Message

Pawel Laszczak July 13, 2020, 10:05 a.m. UTC 
Patch remove some variables initialization from core.c and drd.c
file.

Signed-off-by: Pawel Laszczak <pawell@cadence.com>
---
 drivers/usb/cdns3/core.c |  4 ++--
 drivers/usb/cdns3/drd.c  | 19 +++++++++----------
 2 files changed, 11 insertions(+), 12 deletions(-)

Comments

Peter Chen July 22, 2020, 12:34 a.m. UTC | #1 
On 20-07-13 12:05:47, Pawel Laszczak wrote:
> Patch remove some variables initialization from core.c and drd.c
> file.
> 
> Signed-off-by: Pawel Laszczak <pawell@cadence.com>

Reviewed-by: Peter Chen <peter.chen@nxp.com>

Peter
> ---
>  drivers/usb/cdns3/core.c |  4 ++--
>  drivers/usb/cdns3/drd.c  | 19 +++++++++----------
>  2 files changed, 11 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
> index 1f77fb5aefbf..c498b585eb13 100644
> --- a/drivers/usb/cdns3/core.c
> +++ b/drivers/usb/cdns3/core.c
> @@ -86,7 +86,7 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
>  	struct device *dev = cdns->dev;
>  	enum usb_dr_mode best_dr_mode;
>  	enum usb_dr_mode dr_mode;
> -	int ret = 0;
> +	int ret;
>  
>  	dr_mode = usb_get_dr_mode(dev);
>  	cdns->role = USB_ROLE_NONE;
> @@ -177,7 +177,7 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
>  		goto err;
>  	}
>  
> -	return ret;
> +	return 0;
>  err:
>  	cdns3_exit_roles(cdns);
>  	return ret;
> diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
> index 58089841ed52..4939a568d8a2 100644
> --- a/drivers/usb/cdns3/drd.c
> +++ b/drivers/usb/cdns3/drd.c
> @@ -29,7 +29,6 @@
>   */
>  int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
>  {
> -	int ret = 0;
>  	u32 reg;
>  
>  	switch (mode) {
> @@ -61,7 +60,7 @@ int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
>  		return -EINVAL;
>  	}
>  
> -	return ret;
> +	return 0;
>  }
>  
>  int cdns3_get_id(struct cdns3 *cdns)
> @@ -134,11 +133,11 @@ static void cdns3_otg_enable_irq(struct cdns3 *cdns)
>  int cdns3_drd_switch_host(struct cdns3 *cdns, int on)
>  {
>  	int ret, val;
> -	u32 reg = OTGCMD_OTG_DIS;
>  
>  	/* switch OTG core */
>  	if (on) {
> -		writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd);
> +		writel(OTGCMD_HOST_BUS_REQ | OTGCMD_OTG_DIS,
> +		       &cdns->otg_regs->cmd);
>  
>  		dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
>  		ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
> @@ -212,7 +211,7 @@ int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)
>   */
>  static int cdns3_init_otg_mode(struct cdns3 *cdns)
>  {
> -	int ret = 0;
> +	int ret;
>  
>  	cdns3_otg_disable_irq(cdns);
>  	/* clear all interrupts */
> @@ -223,7 +222,8 @@ static int cdns3_init_otg_mode(struct cdns3 *cdns)
>  		return ret;
>  
>  	cdns3_otg_enable_irq(cdns);
> -	return ret;
> +
> +	return 0;
>  }
>  
>  /**
> @@ -234,7 +234,7 @@ static int cdns3_init_otg_mode(struct cdns3 *cdns)
>   */
>  int cdns3_drd_update_mode(struct cdns3 *cdns)
>  {
> -	int ret = 0;
> +	int ret;
>  
>  	switch (cdns->dr_mode) {
>  	case USB_DR_MODE_PERIPHERAL:
> @@ -307,8 +307,8 @@ static irqreturn_t cdns3_drd_irq(int irq, void *data)
>  int cdns3_drd_init(struct cdns3 *cdns)
>  {
>  	void __iomem *regs;
> -	int ret = 0;
>  	u32 state;
> +	int ret;
>  
>  	regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
>  	if (IS_ERR(regs))
> @@ -359,7 +359,6 @@ int cdns3_drd_init(struct cdns3 *cdns)
>  					cdns3_drd_thread_irq,
>  					IRQF_SHARED,
>  					dev_name(cdns->dev), cdns);
> -
>  	if (ret) {
>  		dev_err(cdns->dev, "couldn't get otg_irq\n");
>  		return ret;
> @@ -371,7 +370,7 @@ int cdns3_drd_init(struct cdns3 *cdns)
>  		return -ENODEV;
>  	}
>  
> -	return ret;
> +	return 0;
>  }
>  
>  int cdns3_drd_exit(struct cdns3 *cdns)
> -- 
> 2.17.1
>
diff mbox series

Patch

diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index 1f77fb5aefbf..c498b585eb13 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -86,7 +86,7 @@  static int cdns3_core_init_role(struct cdns3 *cdns)
 	struct device *dev = cdns->dev;
 	enum usb_dr_mode best_dr_mode;
 	enum usb_dr_mode dr_mode;
-	int ret = 0;
+	int ret;
 
 	dr_mode = usb_get_dr_mode(dev);
 	cdns->role = USB_ROLE_NONE;
@@ -177,7 +177,7 @@  static int cdns3_core_init_role(struct cdns3 *cdns)
 		goto err;
 	}
 
-	return ret;
+	return 0;
 err:
 	cdns3_exit_roles(cdns);
 	return ret;
diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
index 58089841ed52..4939a568d8a2 100644
--- a/drivers/usb/cdns3/drd.c
+++ b/drivers/usb/cdns3/drd.c
@@ -29,7 +29,6 @@ 
  */
 int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
 {
-	int ret = 0;
 	u32 reg;
 
 	switch (mode) {
@@ -61,7 +60,7 @@  int cdns3_set_mode(struct cdns3 *cdns, enum usb_dr_mode mode)
 		return -EINVAL;
 	}
 
-	return ret;
+	return 0;
 }
 
 int cdns3_get_id(struct cdns3 *cdns)
@@ -134,11 +133,11 @@  static void cdns3_otg_enable_irq(struct cdns3 *cdns)
 int cdns3_drd_switch_host(struct cdns3 *cdns, int on)
 {
 	int ret, val;
-	u32 reg = OTGCMD_OTG_DIS;
 
 	/* switch OTG core */
 	if (on) {
-		writel(OTGCMD_HOST_BUS_REQ | reg, &cdns->otg_regs->cmd);
+		writel(OTGCMD_HOST_BUS_REQ | OTGCMD_OTG_DIS,
+		       &cdns->otg_regs->cmd);
 
 		dev_dbg(cdns->dev, "Waiting till Host mode is turned on\n");
 		ret = readl_poll_timeout_atomic(&cdns->otg_regs->sts, val,
@@ -212,7 +211,7 @@  int cdns3_drd_switch_gadget(struct cdns3 *cdns, int on)
  */
 static int cdns3_init_otg_mode(struct cdns3 *cdns)
 {
-	int ret = 0;
+	int ret;
 
 	cdns3_otg_disable_irq(cdns);
 	/* clear all interrupts */
@@ -223,7 +222,8 @@  static int cdns3_init_otg_mode(struct cdns3 *cdns)
 		return ret;
 
 	cdns3_otg_enable_irq(cdns);
-	return ret;
+
+	return 0;
 }
 
 /**
@@ -234,7 +234,7 @@  static int cdns3_init_otg_mode(struct cdns3 *cdns)
  */
 int cdns3_drd_update_mode(struct cdns3 *cdns)
 {
-	int ret = 0;
+	int ret;
 
 	switch (cdns->dr_mode) {
 	case USB_DR_MODE_PERIPHERAL:
@@ -307,8 +307,8 @@  static irqreturn_t cdns3_drd_irq(int irq, void *data)
 int cdns3_drd_init(struct cdns3 *cdns)
 {
 	void __iomem *regs;
-	int ret = 0;
 	u32 state;
+	int ret;
 
 	regs = devm_ioremap_resource(cdns->dev, &cdns->otg_res);
 	if (IS_ERR(regs))
@@ -359,7 +359,6 @@  int cdns3_drd_init(struct cdns3 *cdns)
 					cdns3_drd_thread_irq,
 					IRQF_SHARED,
 					dev_name(cdns->dev), cdns);
-
 	if (ret) {
 		dev_err(cdns->dev, "couldn't get otg_irq\n");
 		return ret;
@@ -371,7 +370,7 @@  int cdns3_drd_init(struct cdns3 *cdns)
 		return -ENODEV;
 	}
 
-	return ret;
+	return 0;
 }
 
 int cdns3_drd_exit(struct cdns3 *cdns)