regulator: tps65090: Fix tps65090 crash on Tegra Dalmore

The patch (60e91b5 regulator: tps65090: Allow setting the overcurrent
wait time) introduced a crash on Tegra Dalmore.  On Dalmore the device
tree doesn't have an entry for all of the FETs so it leaves tps_pdata
NULL in some cases.  Add a check for NULL like the rest of the code
does.

Reported-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index 2057e2e311de..2064b3fd45f7 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -431,8 +431,11 @@ static int tps65090_regulator_probe(struct platform_device *pdev)
                 ri = &pmic[num];
                 ri->dev = &pdev->dev;
                 ri->desc = &tps65090_regulator_desc[num];
-                ri->overcurrent_wait_valid = tps_pdata->overcurrent_wait_valid;
-                ri->overcurrent_wait = tps_pdata->overcurrent_wait;
+                if (tps_pdata) {
+                        ri->overcurrent_wait_valid =
+                                tps_pdata->overcurrent_wait_valid;
+                        ri->overcurrent_wait = tps_pdata->overcurrent_wait;
+                }
 
                 /*
                  * TPS5090 DCDC support the control from external digital input.