linux-kernel - [PATCH] regulator: tps65090: Fix tps65090 crash on Tegra Dalmore

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Date:	Thu,  1 May 2014 11:50:16 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Lee Jones <lee.jones@...aro.org>, Mark Brown <broonie@...nel.org>
Cc:	Stephen Warren <swarren@...dotorg.org>, olof@...om.net,
	Doug Anderson <dianders@...omium.org>, lgirdwood@...il.com,
	linux-kernel@...r.kernel.org
Subject: [PATCH] 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.

Signed-off-by: Doug Anderson <dianders@...omium.org>
---
 drivers/regulator/tps65090-regulator.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/tps65090-regulator.c b/drivers/regulator/tps65090-regulator.c
index ca04e9f..fbe0bf5 100644
--- a/drivers/regulator/tps65090-regulator.c
+++ b/drivers/regulator/tps65090-regulator.c
@@ -306,8 +306,11 @@ 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.
-- 
1.9.1.423.g4596e3a

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