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net: phy: sfp: Handle unimplemented hwmon limits and alarms 

Not all SFPs implement the registers containing sensor limits and
alarms. Luckily, there is a bit indicating if they are implemented or
not. Add checking for this bit, when deciding if the hwmon attributes
should be visible.

Fixes: 1323061a01 ("net: phy: sfp: Add HWMON support for module sensors")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2018-09-04 04:23:56 +02:00 committed by David S. Miller
parent 84cb8eb26c
commit a33710bdb6
1 changed files with 16 additions and 4 deletions
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20
drivers/net/phy/sfp.c
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@ -398,7 +398,6 @@ static umode_t sfp_hwmon_is_visible(const void *data,
switch (type) {
case hwmon_temp:
switch (attr) {
case hwmon_temp_input:
case hwmon_temp_min_alarm:
case hwmon_temp_max_alarm:
case hwmon_temp_lcrit_alarm:
@ -407,13 +406,16 @@ static umode_t sfp_hwmon_is_visible(const void *data,
case hwmon_temp_max:
case hwmon_temp_lcrit:
case hwmon_temp_crit:
if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
return 0;
/* fall through */
case hwmon_temp_input:
return 0444;
default:
return 0;
}
case hwmon_in:
switch (attr) {
case hwmon_in_input:
case hwmon_in_min_alarm:
case hwmon_in_max_alarm:
case hwmon_in_lcrit_alarm:
@ -422,13 +424,16 @@ static umode_t sfp_hwmon_is_visible(const void *data,
case hwmon_in_max:
case hwmon_in_lcrit:
case hwmon_in_crit:
if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
return 0;
/* fall through */
case hwmon_in_input:
return 0444;
default:
return 0;
}
case hwmon_curr:
switch (attr) {
case hwmon_curr_input:
case hwmon_curr_min_alarm:
case hwmon_curr_max_alarm:
case hwmon_curr_lcrit_alarm:
@ -437,6 +442,10 @@ static umode_t sfp_hwmon_is_visible(const void *data,
case hwmon_curr_max:
case hwmon_curr_lcrit:
case hwmon_curr_crit:
if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
return 0;
/* fall through */
case hwmon_curr_input:
return 0444;
default:
return 0;
@ -452,7 +461,6 @@ static umode_t sfp_hwmon_is_visible(const void *data,
channel == 1)
return 0;
switch (attr) {
case hwmon_power_input:
case hwmon_power_min_alarm:
case hwmon_power_max_alarm:
case hwmon_power_lcrit_alarm:
@ -461,6 +469,10 @@ static umode_t sfp_hwmon_is_visible(const void *data,
case hwmon_power_max:
case hwmon_power_lcrit:
case hwmon_power_crit:
if (!(sfp->id.ext.enhopts & SFP_ENHOPTS_ALARMWARN))
return 0;
/* fall through */
case hwmon_power_input:
return 0444;
default:
return 0;