[PATCH net-next] rxrpc: Remove set but not used variable 'ioc'

Fixes gcc '-Wunused-but-set-variable' warning:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

It never used since introduction in
commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")

Signed-off-by: YueHaibing <redacted>
---
 net/rxrpc/output.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index e8fb892..f3ed16a 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c

@@ -524,7 +524,7 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
 	struct kvec iov[2];
 	size_t size;
 	__be32 code;
-	int ret, ioc;
+	int ret;
 
 	_enter("%d", local->debug_id);
 

@@ -548,13 +548,11 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
 		case RXRPC_SKB_MARK_REJECT_BUSY:
 			whdr.type = RXRPC_PACKET_TYPE_BUSY;
 			size = sizeof(whdr);
-			ioc = 1;
 			break;
 		case RXRPC_SKB_MARK_REJECT_ABORT:
 			whdr.type = RXRPC_PACKET_TYPE_ABORT;
 			code = htonl(skb->priority);
 			size = sizeof(whdr) + sizeof(code);
-			ioc = 2;
 			break;
 		default:
 			rxrpc_free_skb(skb, rxrpc_skb_rx_freed);

YueHaibing [off-list ref] wrote:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

It never used since introduction in

I wonder why my compiler doesn't show this warning.

Anyway, NAK: just removing the variable is the wrong fix - you need to look at
the code more closely.  The actual fix is to pass it to kernel_sendmsg()
instead of 2.

But thanks anyway!  Do you want to respin your patch?

commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")

Btw, this should be a 'Fixes: <commit> ("subject")' line and the patch needs
to go to net, not net-next.

David

On 2018/10/9 18:13, David Howells wrote:

YueHaibing [off-list ref] wrote:

quoted

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

It never used since introduction in

I wonder why my compiler doesn't show this warning.

Just use make W=1

Anyway, NAK: just removing the variable is the wrong fix - you need to look at
the code more closely.  The actual fix is to pass it to kernel_sendmsg()
instead of 2.

I didn't notice this, Thank you for correction.

But thanks anyway!  Do you want to respin your patch?

Sure, I will fix it.

quoted

commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")

Btw, this should be a 'Fixes: <commit> ("subject")' line and the patch needs
to go to net, not net-next.

David

.

Fixes gcc '-Wunused-but-set-variable' warning:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

'ioc' is the correct kvec num while send response packet.

Fixes: commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")
Signed-off-by: YueHaibing <redacted>
---
 net/rxrpc/output.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index e8fb892..a141ee3 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c

@@ -572,7 +572,8 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
 			whdr.flags	^= RXRPC_CLIENT_INITIATED;
 			whdr.flags	&= RXRPC_CLIENT_INITIATED;
 
-			ret = kernel_sendmsg(local->socket, &msg, iov, 2, size);
+			ret = kernel_sendmsg(local->socket, &msg,
+					     iov, ioc, size);
 			if (ret < 0)
 				trace_rxrpc_tx_fail(local->debug_id, 0, ret,
 						    rxrpc_tx_point_reject);

On 10/09/2018 05:15 PM, YueHaibing wrote:

Fixes gcc '-Wunused-but-set-variable' warning:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

'ioc' is the correct kvec num while send response packet.

Fixes: commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than 

ABORTs")

   "commit" not needed here.

Signed-off-by: YueHaibing <redacted>

[...]

MBR, Sergei

On 2018/10/9 23:34, Sergei Shtylyov wrote:

On 10/09/2018 05:15 PM, YueHaibing wrote:

quoted

Fixes gcc '-Wunused-but-set-variable' warning:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

'ioc' is the correct kvec num while send response packet.

Fixes: commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than 

ABORTs")

   "commit" not needed here.

Thank you for review.

quoted

Signed-off-by: YueHaibing <redacted>

[...]

MBR, Sergei

Fixes gcc '-Wunused-but-set-variable' warning:

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

'ioc' is the correct kvec num while send response packet.

Fixes: ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")
Signed-off-by: YueHaibing <redacted>
---
v3: remove 'commit' from Fixes info.
v2: use 'ioc' rather than remove it.
---
 net/rxrpc/output.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c
index e8fb892..a141ee3 100644
--- a/net/rxrpc/output.c
+++ b/net/rxrpc/output.c

@@ -572,7 +572,8 @@ void rxrpc_reject_packets(struct rxrpc_local *local)
 			whdr.flags	^= RXRPC_CLIENT_INITIATED;
 			whdr.flags	&= RXRPC_CLIENT_INITIATED;
 
-			ret = kernel_sendmsg(local->socket, &msg, iov, 2, size);
+			ret = kernel_sendmsg(local->socket, &msg,
+					     iov, ioc, size);
 			if (ret < 0)
 				trace_rxrpc_tx_fail(local->debug_id, 0, ret,
 						    rxrpc_tx_point_reject);

On Tue, Oct 09, 2018 at 11:13:16AM +0100, David Howells wrote:

YueHaibing [off-list ref] wrote:

quoted

net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
 variable 'ioc' set but not used [-Wunused-but-set-variable]

It never used since introduction in

I wonder why my compiler doesn't show this warning.

Anyway, NAK: just removing the variable is the wrong fix - you need to look at
the code more closely.  The actual fix is to pass it to kernel_sendmsg()
instead of 2.

But thanks anyway!  Do you want to respin your patch?

quoted

commit ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs")

Btw, this should be a 'Fixes: <commit> ("subject")' line and the patch needs
to go to net, not net-next.

I told him to do that because it wasn't a bugfix...  Probably just Fixes
is the right thing to use though.

regards,
dan carpenter

Dan Carpenter [off-list ref] wrote:

I told him to do that because it wasn't a bugfix...  Probably just Fixes
is the right thing to use though.

But the correct fix *is* a bug fix.

David