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| author | Tim Harvey <tharvey@gateworks.com> | 2015-07-08 15:49:43 -0700 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-07-10 10:15:19 +0200 |
| commit | 425640256a7c5e9259f7583ee4eca1f3b70f8032 (patch) | |
| tree | fcc36bcffc86bf641e9adc2c700eecbec42e2c4b /drivers/thermal | |
| parent | 699279cac0ed0816433e0922aba26fe6dd0a8066 (diff) | |
| download | blackbird-obmc-uboot-425640256a7c5e9259f7583ee4eca1f3b70f8032.tar.gz blackbird-obmc-uboot-425640256a7c5e9259f7583ee4eca1f3b70f8032.zip | |
thermal: imx_thermal: fix busywait if IMX6 temp <0C
The temperature calculation must be typecasted to keep the compiler
from sign extending a negative value prior to division.
This fixes an issue where if the CPU temperature is <0C it will get stuck
in the busywait loop until the CPU heats up to 0C.
Cc: Ye Li <b37916@freescale.com>
Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 42ca8d0b6b..3c6c9679f9 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -115,7 +115,7 @@ static int read_cpu_temperature(struct udevice *dev) writel(TEMPSENSE0_FINISHED, &anatop->tempsense0_clr); /* milli_Tmeas = c2 - Nmeas * c1 */ - temperature = (c2 - n_meas * c1)/1000; + temperature = (long)(c2 - n_meas * c1)/1000; /* power down anatop thermal sensor */ writel(TEMPSENSE0_POWER_DOWN, &anatop->tempsense0_set); |
