w1-eeprom: ds24xxx: fix data abort in ds24xxx_probe()

Data abort was occurring when using "w1 bus" with a DS24B33 present.

The abort occurred in the ds24xxx_probe() because the struct w1_device
pointer was NULL. This is because that structure  is allocated by
the parent device uclass (by .per_child_platdata_auto_alloc_size)
and thus the correct accessor is dev_get_parent_platdata() not
dev_get_platdata()

Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>

diff --git a/drivers/w1-eeprom/ds24xxx.c b/drivers/w1-eeprom/ds24xxx.c
index 56186e5..0967acc 100644 (file)
--- a/drivers/w1-eeprom/ds24xxx.c
+++ b/drivers/w1-eeprom/ds24xxx.c
@@ -31,7 +31,7 @@ static int ds24xxx_probe(struct udevice *dev)
 {
        struct w1_device *w1;
 
-       w1 = dev_get_platdata(dev);
+       w1 = dev_get_parent_platdata(dev);
        w1->id = 0;
        return 0;
 }