linux-kernel - [PATCH] regulator: tps65090: Check for pdata before dereferencing

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Date:	Thu,  1 May 2014 11:56:47 -0700
From:	Mark Brown <broonie@...nel.org>
To:	Olof Johansson <olof@...om.net>,
	Doug Anderson <dianders@...omium.org>,
	Liam Girdwood <lgirdwood@...il.com>
Cc:	linux-kernel@...r.kernel.org, linaro-kernel@...ts.linaro.org,
	Mark Brown <broonie@...aro.org>
Subject: [PATCH] regulator: tps65090: Check for pdata before dereferencing

From: Mark Brown <broonie@...aro.org>

The per-regulator pdata is optional so we need to check that it's there
before dereferencing it. This wasn't done in "regulator: tps65090: Allow
setting the overcurrent wait time", fix that.

Reported-by: Olof Johansson <olof@...om.net>
Signed-off-by: Mark Brown <broonie@...aro.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.
-- 
1.9.2

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