[PATCH 0/3] Modify function return type and remove local return variable

[PATCH 0/3] Modify function return type and remove local return variable

[Janani Ravichandran]

This patchset modifies return type of tcp_process() from int to void as
the value returned is not used anywhere. Furthermore, the local variable
used in the return statement in the function is not being initialised in
all code paths. This variable has been removed as it is no longer
necessary.

Janani Ravichandran (3):
  staging: wilc1000: wilc_wlan.c: Modify return type of function
    add_tcp_pending_ack()
  staging: wilc1000: wilc_wlan.c: Remove local variable ret
  staging: wilc1000: wilc_wlan.c: Remove empty else blocks.

 drivers/staging/wilc1000/wilc_wlan.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

-- 
2.5.0

[PATCH 1/3] staging: wilc1000: wilc_wlan.c: Modify return type of function tcp_process()

[Janani Ravichandran]

Change function header for tcp_process() to return void as the return
value of type int is not used anywhere.

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
---
 drivers/staging/wilc1000/wilc_wlan.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index a396ac9..c3ca662 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -207,7 +207,7 @@ static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
 	return 0;
 }
 
-static inline int tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
+static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 {
 	int ret;
 	u8 *eth_hdr_ptr;
@@ -274,7 +274,6 @@ static inline int tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 		ret = 0;
 	}
 	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
-	return ret;
 }
 
 static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
-- 
2.5.0

Re: [Outreachy kernel] [PATCH 1/3] staging: wilc1000: wilc_wlan.c: Modify return type of function tcp_process()

[Daniel Baluta]

On Tue, Feb 16, 2016 at 8:20 PM, Janani Ravichandran
<janani.rvchndrn@gmail.com> wrote:
> Change function header for tcp_process() to return void as the return
> value of type int is not used anywhere.

Better squash all 3 patches here into one. It's easier to follow the change.


>
> Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
> ---
>  drivers/staging/wilc1000/wilc_wlan.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
> index a396ac9..c3ca662 100644
> --- a/drivers/staging/wilc1000/wilc_wlan.c
> +++ b/drivers/staging/wilc1000/wilc_wlan.c
> @@ -207,7 +207,7 @@ static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
>         return 0;
>  }
>
> -static inline int tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
> +static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
>  {
>         int ret;
>         u8 *eth_hdr_ptr;
> @@ -274,7 +274,6 @@ static inline int tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
>                 ret = 0;
>         }
>         spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
> -       return ret;
>  }
>
>  static int wilc_wlan_txq_filter_dup_tcp_ack(struct net_device *dev)
> --
> 2.5.0
>
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[PATCH 2/3] staging: wilc1000: wilc_wlan.c: Remove local variable ret

[Janani Ravichandran]

Remove local variable ret and all its initializations as it is no longer
useful.

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
---
 drivers/staging/wilc1000/wilc_wlan.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index c3ca662..75b9bbb 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -209,7 +209,6 @@ static inline int add_tcp_pending_ack(u32 ack, u32 session_index,
 
 static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 {
-	int ret;
 	u8 *eth_hdr_ptr;
 	u8 *buffer = tqe->buffer;
 	unsigned short h_proto;
@@ -268,10 +267,10 @@ static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 			}
 
 		} else {
-			ret = 0;
+	
 		}
 	} else {
-		ret = 0;
+
 	}
 	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 }
-- 
2.5.0

[PATCH 3/3] staging: wilc1000: wilc_wlan.c: Remove empty else blocks.

[Janani Ravichandran]

Remove empty else blocks which are no longer necessary.

Signed-off-by: Janani Ravichandran <janani.rvchndrn@gmail.com>
---
 drivers/staging/wilc1000/wilc_wlan.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c
index 75b9bbb..e5471a7 100644
--- a/drivers/staging/wilc1000/wilc_wlan.c
+++ b/drivers/staging/wilc1000/wilc_wlan.c
@@ -266,11 +266,7 @@ static inline void tcp_process(struct net_device *dev, struct txq_entry_t *tqe)
 				add_tcp_pending_ack(ack_no, i, tqe);
 			}
 
-		} else {
-	
 		}
-	} else {
-
 	}
 	spin_unlock_irqrestore(&wilc->txq_spinlock, flags);
 }
-- 
2.5.0