[PATCH v2] net: phy: leds: Don't make our own link speed names

[PATCH v2] net: phy: leds: Don't make our own link speed names

[Kyle Roeschley]

The phy core provides a handy phy_speed_to_str() helper, so use that
instead of doing our own formatting of the different known link speeds.
To do this, increase PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE to 11 so we can fit
'Unsupported' if necessary.

Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com>
---

v2: Increase PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE to fit 'Unsupported'.

 drivers/net/phy/phy_led_triggers.c | 13 +------------
 include/linux/phy_led_triggers.h   |  2 +-
 2 files changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/net/phy/phy_led_triggers.c b/drivers/net/phy/phy_led_triggers.c
index 491efc1bf5c4..2827eb413c9c 100644
--- a/drivers/net/phy/phy_led_triggers.c
+++ b/drivers/net/phy/phy_led_triggers.c
@@ -77,20 +77,9 @@ static int phy_led_trigger_register(struct phy_device *phy,
 				    struct phy_led_trigger *plt,
 				    unsigned int speed)
 {
-	char name_suffix[PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE];
-
 	plt->speed = speed;
-
-	if (speed < SPEED_1000)
-		snprintf(name_suffix, sizeof(name_suffix), "%dMbps", speed);
-	else if (speed == SPEED_2500)
-		snprintf(name_suffix, sizeof(name_suffix), "2.5Gbps");
-	else
-		snprintf(name_suffix, sizeof(name_suffix), "%dGbps",
-			 DIV_ROUND_CLOSEST(speed, 1000));
-
 	phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name),
-				    name_suffix);
+				    phy_speed_to_str(speed));
 	plt->trigger.name = plt->name;
 
 	return led_trigger_register(&plt->trigger);
diff --git a/include/linux/phy_led_triggers.h b/include/linux/phy_led_triggers.h
index b37b05bfd1a6..4587ce362535 100644
--- a/include/linux/phy_led_triggers.h
+++ b/include/linux/phy_led_triggers.h
@@ -20,7 +20,7 @@ struct phy_device;
 #include <linux/leds.h>
 #include <linux/phy.h>
 
-#define PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE	10
+#define PHY_LED_TRIGGER_SPEED_SUFFIX_SIZE	11
 
 #define PHY_LINK_LED_TRIGGER_NAME_SIZE (MII_BUS_ID_SIZE + \
 				       FIELD_SIZEOF(struct mdio_device, addr)+\
-- 
2.19.1

Re: [PATCH v2] net: phy: leds: Don't make our own link speed names

[kbuild test robot]

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Hi Kyle,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on v4.20-rc1 next-20181109]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Kyle-Roeschley/net-phy-leds-Don-t-make-our-own-link-speed-names/20181109-143344
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=xtensa 

All warnings (new ones prefixed by >>):

   drivers/net//phy/phy_led_triggers.c: In function 'phy_led_trigger_register':
>> drivers/net//phy/phy_led_triggers.c:82:9: warning: passing argument 4 of 'phy_led_trigger_format_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
            phy_speed_to_str(speed));
            ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/net//phy/phy_led_triggers.c:70:25: note: expected 'char *' but argument is of type 'const char *'
         size_t size, char *suffix)
                      ~~~~~~^~~~~~

vim +82 drivers/net//phy/phy_led_triggers.c

    75	
    76	static int phy_led_trigger_register(struct phy_device *phy,
    77					    struct phy_led_trigger *plt,
    78					    unsigned int speed)
    79	{
    80		plt->speed = speed;
    81		phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name),
  > 82					    phy_speed_to_str(speed));
    83		plt->trigger.name = plt->name;
    84	
    85		return led_trigger_register(&plt->trigger);
    86	}
    87	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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Re: [PATCH v2] net: phy: leds: Don't make our own link speed names

[kbuild test robot]

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Hi Kyle,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]
[also build test WARNING on v4.20-rc1 next-20181109]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Kyle-Roeschley/net-phy-leds-Don-t-make-our-own-link-speed-names/20181109-143344
config: x86_64-allmodconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> drivers/net/phy/phy_led_triggers.c:82:53: warning: incorrect type in argument 4 (different modifiers)
   drivers/net/phy/phy_led_triggers.c:82:53:    expected char *suffix
   drivers/net/phy/phy_led_triggers.c:82:53:    got char const *
   drivers/net/phy/phy_led_triggers.c: In function 'phy_led_trigger_register':
   drivers/net/phy/phy_led_triggers.c:82:9: warning: passing argument 4 of 'phy_led_trigger_format_name' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]
            phy_speed_to_str(speed));
            ^~~~~~~~~~~~~~~~
   drivers/net/phy/phy_led_triggers.c:69:13: note: expected 'char *' but argument is of type 'const char *'
    static void phy_led_trigger_format_name(struct phy_device *phy, char *buf,
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +82 drivers/net/phy/phy_led_triggers.c

    75	
    76	static int phy_led_trigger_register(struct phy_device *phy,
    77					    struct phy_led_trigger *plt,
    78					    unsigned int speed)
    79	{
    80		plt->speed = speed;
    81		phy_led_trigger_format_name(phy, plt->name, sizeof(plt->name),
  > 82					    phy_speed_to_str(speed));
    83		plt->trigger.name = plt->name;
    84	
    85		return led_trigger_register(&plt->trigger);
    86	}
    87	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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