Missing coherent_dma_mask assigning triggers the following warning in
dmesg:
[ 3.287872] platform lm3533-backlight.0: DMA mask not set
Since this warning might be elevated to an error in the future, set
coherent_dma_mask to zero because both the core and cells do not utilize
DMA.
Signed-off-by: Svyatoslav Ryhel <redacted>
---
drivers/mfd/lm3533-core.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/mfd/lm3533-core.c b/drivers/mfd/lm3533-core.c
index 2a63df034171e..9233da7ce0996 100644
--- a/drivers/mfd/lm3533-core.c
+++ b/drivers/mfd/lm3533-core.c
@@ -479,6 +479,10 @@ static int lm3533_i2c_probe(struct i2c_client *i2c)
LM3533_BOOST_FREQ_MAX);
lm3533->boost_freq = lm3533->boost_freq / (500 * KILO) - 1;
+ /* LM3533 and child devices do not use DMA */
+ i2c->dev.coherent_dma_mask = 0;
+ i2c->dev.dma_mask = &i2c->dev.coherent_dma_mask;
+
return lm3533_device_init(lm3533);
}
--
2.53.0