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ACPI: gracefully print null trip-point device

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if acpi_bus_get_device() returns NULL, print nothing
instead of "<NUL" in /proc/acpi/thermal_zone/*/trip_points

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Thomas Renninger 2007-06-18 00:40:51 -04:00 committed by Len Brown
parent 188e1f81ba
commit e7c746ef09
1 changed files with 11 additions and 4 deletions
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15
drivers/acpi/thermal.c
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@ -828,6 +828,8 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_thermal *tz = seq->private;
struct acpi_device *device;
acpi_status status;
int i = 0;
int j = 0;
@ -850,8 +852,10 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
tz->trips.passive.tc1, tz->trips.passive.tc2,
tz->trips.passive.tsp);
for (j = 0; j < tz->trips.passive.devices.count; j++) {
acpi_bus_get_device(tz->trips.passive.devices.handles[j], &device);
seq_printf(seq, "%4.4s ", acpi_device_bid(device));
status = acpi_bus_get_device(tz->trips.passive.devices.
handles[j], &device);
seq_printf(seq, "%4.4s ", status ? "" :
acpi_device_bid(device));
}
seq_puts(seq, "\n");
}
@ -863,8 +867,11 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
i,
KELVIN_TO_CELSIUS(tz->trips.active[i].temperature));
for (j = 0; j < tz->trips.active[i].devices.count; j++){
acpi_bus_get_device(tz->trips.active[i].devices.handles[j], &device);
seq_printf(seq, "%4.4s ", acpi_device_bid(device));
status = acpi_bus_get_device(tz->trips.active[i].
devices.handles[j],
&device);
seq_printf(seq, "%4.4s ", status ? "" :
acpi_device_bid(device));
}
seq_puts(seq, "\n");
}