[PATCH 6/8] thermal:cpu cooling:ti: Provide deferred probing for ti drivers

Lukasz Majewski
2014-11-13T17:03:40Z

When CPU freq is used as a thermal zone cooling device, one needs to wait
until cpufreq subsystem is properly initialized.

This code is similar to the one already available in imx_thermal.c file.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
---
drivers/thermal/ti-soc-thermal/ti-bandgap.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
index 634b6ce..0ac5ead 100644
--- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c
+++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c
@@ -40,6 +40,7 @@
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/io.h>
+#include <linux/cpufreq.h>

#include "ti-bandgap.h"

@@ -1196,6 +1197,12 @@ int ti_bandgap_probe(struct platform_device *pdev)
struct ti_bandgap *bgp;
int clk_rate, ret = 0, i;

+#ifdef CONFIG_CPU_THERMAL
+ if (!cpufreq_get_current_driver()) {
+ dev_dbg(&pdev->dev, "no cpufreq driver!");
+ return -EPROBE_DEFER;
+ }
+#endif
bgp = ti_bandgap_build(pdev);
if (IS_ERR(bgp)) {
dev_err(&pdev->dev, "failed to fetch platform data\n");
--
2.0.0.rc2