From 46f107d0cb22b3f2b23d7fc7c50757f453a36508 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sun, 3 Jun 2018 22:16:17 +0200 Subject: mfd: wm97xx-core: Platform data can be NULL It is not mandatory that platform data is passed along the ac97 codec. Actually there are configuration without a battery connected to the ADC of the codec. This is for example the case for the PXA zylonite platform, so fix the NULL dereferencing by adding a test. Fixes: a5c6951c49fb ("mfd: wm97xx-core: core support for wm97xx Codec") Signed-off-by: Robert Jarzmik Signed-off-by: Lee Jones --- drivers/mfd/wm97xx-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mfd') diff --git a/drivers/mfd/wm97xx-core.c b/drivers/mfd/wm97xx-core.c index 4141ee52a70b..f5a8347f837f 100644 --- a/drivers/mfd/wm97xx-core.c +++ b/drivers/mfd/wm97xx-core.c @@ -278,7 +278,7 @@ static int wm97xx_ac97_probe(struct ac97_codec_device *adev) codec_pdata = &wm97xx->codec_pdata; codec_pdata->ac97 = wm97xx->ac97; - codec_pdata->batt_pdata = pdata->batt_pdata; + codec_pdata->batt_pdata = pdata ? pdata->batt_pdata : NULL; switch (adev->vendor_id) { case WM9705_VENDOR_ID: -- cgit v1.2.3