[v1,1/1] gpio: sim: Initialize attribute allocated on the heap

Message ID 20210408155506.12636-1-andriy.shevchenko@linux.intel.com
State New
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  • [v1,1/1] gpio: sim: Initialize attribute allocated on the heap
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Commit Message

Andy Shevchenko April 8, 2021, 3:55 p.m.
The attributes on the heap must be initialized before use.
Neglecting that will produce an Oops in some configurations:

  BUG: key ffff000800eba398 has not been registered!

Initialize attribute allocated on the heap.

Fixes: 3f0279eb9e37 ("gpio: sim: new testing module")
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/gpio/gpio-sim.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/drivers/gpio/gpio-sim.c b/drivers/gpio/gpio-sim.c
index ea17289a869c..92493b98c51b 100644
--- a/drivers/gpio/gpio-sim.c
+++ b/drivers/gpio/gpio-sim.c
@@ -284,6 +284,7 @@  static int gpio_sim_setup_sysfs(struct gpio_sim_chip *chip)
 		line_attr->offset = i;
 
 		dev_attr = &line_attr->dev_attr;
+		sysfs_attr_init(&dev_attr->attr);
 
 		dev_attr->attr.name = devm_kasprintf(dev, GFP_KERNEL,
 						     "gpio%u", i);