diff mbox series

via-velocity: Add missing KERN_<LEVEL> where needed

Message ID e45d15ad36a0c9a994b5a1136c72518215c99f7a.camel@perches.com
State Changes Requested
Delegated to: David Miller
Headers show
Series via-velocity: Add missing KERN_<LEVEL> where needed | expand

Commit Message

Joe Perches Aug. 1, 2020, 3:51 p.m. UTC 
Link status is emitted on multiple lines as it does not use
KERN_CONT.

Coalesce the multi-part logging into a single line output and
add missing KERN_<LEVEL> to a couple logging calls.

This also reduces object size.

Signed-off-by: Joe Perches <joe@perches.com>
---
 drivers/net/ethernet/via/via-velocity.c | 46 ++++++++++++++++++++++-----------
 1 file changed, 31 insertions(+), 15 deletions(-)

Comments

David Miller Aug. 3, 2020, 10:42 p.m. UTC | #1 
From: Joe Perches <joe@perches.com>
Date: Sat, 01 Aug 2020 08:51:03 -0700

> Link status is emitted on multiple lines as it does not use
> KERN_CONT.
> 
> Coalesce the multi-part logging into a single line output and
> add missing KERN_<LEVEL> to a couple logging calls.
> 
> This also reduces object size.
> 
> Signed-off-by: Joe Perches <joe@perches.com>

The real problem is the whole VELOCITY_PRT() private debug log
control business this driver is doing.

It should be using the standard netdev logging level infrastructure.

> +			VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "set Velocity to forced full mode\n");

You can't tell me that this "KERN_INFO blah blah blah" is really
something we should add more of these days, right?

If you're going to improve this driver's logging code please do
so by having it use the standard interfaces.

Thanks.
Joe Perches Aug. 4, 2020, 12:58 a.m. UTC | #2 
On Mon, 2020-08-03 at 15:42 -0700, David Miller wrote:
> From: Joe Perches <joe@perches.com>
> Date: Sat, 01 Aug 2020 08:51:03 -0700
> 
> > Link status is emitted on multiple lines as it does not use
> > KERN_CONT.
> > 
> > Coalesce the multi-part logging into a single line output and
> > add missing KERN_<LEVEL> to a couple logging calls.
> > 
> > This also reduces object size.
> > 
> > Signed-off-by: Joe Perches <joe@perches.com>
> 
> The real problem is the whole VELOCITY_PRT() private debug log
> control business this driver is doing.
> 
> It should be using the standard netdev logging level infrastructure.
> 
> > +                     VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "set Velocity to forced full mode\n");
> 
> You can't tell me that this "KERN_INFO blah blah blah" is really
> something we should add more of these days, right?
> 
> If you're going to improve this driver's logging code please do
> so by having it use the standard interfaces.

The existing code is not great and definitely odd.

This is just a bug fix until such time as it's better.

VELOCITY_PRT is not just used for debugging.

The default is output if MSG_LEVEL_INFO and
there's a control for further output.

This is just fixing Linus' change for KERN_CONT
uses on separate lines from awhile ago.

It'd be nice if a via maintainer actually fixed it.
diff mbox series

Patch

diff --git a/drivers/net/ethernet/via/via-velocity.c b/drivers/net/ethernet/via/via-velocity.c
index 713dbc04b25b..84d456464b88 100644
--- a/drivers/net/ethernet/via/via-velocity.c
+++ b/drivers/net/ethernet/via/via-velocity.c
@@ -927,12 +927,12 @@  static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
 		if (mii_status & VELOCITY_DUPLEX_FULL) {
 			CHIPGCR |= CHIPGCR_FCFDX;
 			writeb(CHIPGCR, &regs->CHIPGCR);
-			VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n");
+			VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "set Velocity to forced full mode\n");
 			if (vptr->rev_id < REV_ID_VT3216_A0)
 				BYTE_REG_BITS_OFF(TCR_TB2BDIS, &regs->TCR);
 		} else {
 			CHIPGCR &= ~CHIPGCR_FCFDX;
-			VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n");
+			VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "set Velocity to forced half mode\n");
 			writeb(CHIPGCR, &regs->CHIPGCR);
 			if (vptr->rev_id < REV_ID_VT3216_A0)
 				BYTE_REG_BITS_ON(TCR_TB2BDIS, &regs->TCR);
@@ -985,45 +985,61 @@  static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status)
  */
 static void velocity_print_link_status(struct velocity_info *vptr)
 {
+	const char *link;
+	const char *speed;
+	const char *duplex;
 
 	if (vptr->mii_status & VELOCITY_LINK_FAIL) {
 		VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->netdev->name);
-	} else if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
-		VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->netdev->name);
+		return;
+	}
+
+	if (vptr->options.spd_dpx == SPD_DPX_AUTO) {
+		link = "auto-negotiation";
 
 		if (vptr->mii_status & VELOCITY_SPEED_1000)
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps");
+			speed = "1000";
 		else if (vptr->mii_status & VELOCITY_SPEED_100)
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps");
+			speed = "100";
 		else
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps");
+			speed = "10";
 
 		if (vptr->mii_status & VELOCITY_DUPLEX_FULL)
-			VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n");
+			duplex = "full";
 		else
-			VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n");
+			duplex = "half";
 	} else {
-		VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->netdev->name);
+		link = "forced";
+
 		switch (vptr->options.spd_dpx) {
 		case SPD_DPX_1000_FULL:
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n");
+			speed = "1000";
+			duplex = "full";
 			break;
 		case SPD_DPX_100_HALF:
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n");
+			speed = "100";
+			duplex = "half";
 			break;
 		case SPD_DPX_100_FULL:
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n");
+			speed = "100";
+			duplex = "full";
 			break;
 		case SPD_DPX_10_HALF:
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n");
+			speed = "10";
+			duplex = "half";
 			break;
 		case SPD_DPX_10_FULL:
-			VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n");
+			speed = "10";
+			duplex = "full";
 			break;
 		default:
+			speed = "unknown";
+			duplex = "unknown";
 			break;
 		}
 	}
+	VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link %s speed %sM bps %s duplex\n",
+		     vptr->netdev->name, link, speed, duplex);
 }
 
 /**