Re: [PATCH v2] i2c: i2c-stm32f7: fix no check on returned setup

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On 03/21/2018 05:48 PM, Pierre-Yves MORDRET wrote:
Before assigning returned setup structure check if not null

Fixes: 463a9215f3ca7600b5ff ("i2c: stm32f7: fix setup structure")
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@xxxxxx>
---
   Version history:
      v1:
          * Initial
      v2:
          * fill "ret" with error statement before go to "clk_free"
---
---
  drivers/i2c/busses/i2c-stm32f7.c | 5 +++++
  1 file changed, 5 insertions(+)

diff --git a/drivers/i2c/busses/i2c-stm32f7.c b/drivers/i2c/busses/i2c-stm32f7.c
index b445b3b..f273e28 100644
--- a/drivers/i2c/busses/i2c-stm32f7.c
+++ b/drivers/i2c/busses/i2c-stm32f7.c
@@ -888,6 +888,11 @@ static int stm32f7_i2c_probe(struct platform_device *pdev)
  	}
setup = of_device_get_match_data(&pdev->dev);
+	if (!setup) {
+		dev_err(&pdev->dev, "Can't get device data\n");
+		ret = -ENODEV;
+		goto clk_free;
+	}
  	i2c_dev->setup = *setup;
ret = device_property_read_u32(i2c_dev->dev, "i2c-scl-rising-time-ns",

Acked-by: Alexandre TORGUE <alexandre.torgue@xxxxxx>



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