Using the RTAS watchdog driver to read out the temperature crashes
on a PXCAB:
Unable to handle kernel paging request for data at address 0xfe347b50
Faulting instruction address: 0xc00000000001af64
Oops: Kernel access of bad area, sig: 11 [#1]
The wrong usage of "(void *)__pa(&temperature)" in rtas_call() is
removed by using the function rtas_get_sensor() which does the
right thing.
Signed-off-by: Adrian Reber <adr...@lisas.de>
---
v2: use rtas_get_sensor(); typo fixed
---
drivers/watchdog/wdrtas.c | 8 +++-----
1 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/watchdog/wdrtas.c b/drivers/watchdog/wdrtas.c
index 5d3b1a8..a9f00dc 100644
--- a/drivers/watchdog/wdrtas.c
+++ b/drivers/watchdog/wdrtas.c
@@ -214,16 +214,14 @@ static void wdrtas_timer_keepalive(void)
*/
static int wdrtas_get_temperature(void)
{
- long result;
+ int result;
int temperature = 0;
- result = rtas_call(wdrtas_token_get_sensor_state, 2, 2,
- (void *)__pa(&temperature),
- WDRTAS_THERMAL_SENSOR, 0);
+ result = rtas_get_sensor(WDRTAS_THERMAL_SENSOR, 0, &temperature);
if (result < 0)
printk(KERN_WARNING "wdrtas: reading the thermal sensor "
- "faild: %li\n", result);
+ "failed: %i\n", result);
else
temperature = ((temperature * 9) / 5) + 32; /* fahrenheit */
--
1.5.6.6
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