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authorWolfram Sang <wsa+renesas@sang-engineering.com>2020-03-12 14:32:44 +0100
committerWolfram Sang <wsa@the-dreams.de>2020-03-13 15:15:30 +0100
commit8daee952b4389729358665fb91949460641659d4 (patch)
treedbba6006981938c978f253aecf0309f471b9ee53 /drivers/i2c
parent3747cd2efe7ecb9604972285ab3f60c96cb753a8 (diff)
i2c: acpi: put device when verifying client fails
i2c_verify_client() can fail, so we need to put the device when that happens. Fixes: 525e6fabeae2 ("i2c / ACPI: add support for ACPI reconfigure notifications") Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-core-acpi.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/i2c/i2c-core-acpi.c b/drivers/i2c/i2c-core-acpi.c
index 8f3dbc97a057..8b0ff780919b 100644
--- a/drivers/i2c/i2c-core-acpi.c
+++ b/drivers/i2c/i2c-core-acpi.c
@@ -394,9 +394,17 @@ EXPORT_SYMBOL_GPL(i2c_acpi_find_adapter_by_handle);
static struct i2c_client *i2c_acpi_find_client_by_adev(struct acpi_device *adev)
{
struct device *dev;
+ struct i2c_client *client;
dev = bus_find_device_by_acpi_dev(&i2c_bus_type, adev);
- return dev ? i2c_verify_client(dev) : NULL;
+ if (!dev)
+ return NULL;
+
+ client = i2c_verify_client(dev);
+ if (!client)
+ put_device(dev);
+
+ return client;
}
static int i2c_acpi_notify(struct notifier_block *nb, unsigned long value,