[v4,04/24] i2c: designware: Fix lock probe call order in dw_i2c_plat_probe()
Commit Message
We should not mix managed calls with non-managed. This will break
the calls order at the error path and ->remove() stages. Fix this
by wrapping lock probe to become managed one.
Fixes: 78d5e9e299e3 ("i2c: designware: Add AMD PSP I2C bus support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/i2c/busses/i2c-designware-platdrv.c | 24 ++++++++++-----------
1 file changed, 12 insertions(+), 12 deletions(-)
Comments
Hi Andy,
On Mon, Nov 20, 2023 at 04:41:46PM +0200, Andy Shevchenko wrote:
> We should not mix managed calls with non-managed. This will break
> the calls order at the error path and ->remove() stages. Fix this
> by wrapping lock probe to become managed one.
>
> Fixes: 78d5e9e299e3 ("i2c: designware: Add AMD PSP I2C bus support")
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Thanks,
Andi
@@ -243,6 +243,17 @@ static const struct i2c_dw_semaphore_callbacks i2c_dw_semaphore_cb_table[] = {
{}
};
+static void i2c_dw_remove_lock_support(void *data)
+{
+ struct dw_i2c_dev *dev = data;
+
+ if (dev->semaphore_idx < 0)
+ return;
+
+ if (i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove)
+ i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove(dev);
+}
+
static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
{
const struct i2c_dw_semaphore_callbacks *ptr;
@@ -273,16 +284,7 @@ static int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev)
break;
}
- return 0;
-}
-
-static void i2c_dw_remove_lock_support(struct dw_i2c_dev *dev)
-{
- if (dev->semaphore_idx < 0)
- return;
-
- if (i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove)
- i2c_dw_semaphore_cb_table[dev->semaphore_idx].remove(dev);
+ return devm_add_action_or_reset(dev->dev, i2c_dw_remove_lock_support, dev);
}
static void dw_i2c_plat_assert_reset(void *data)
@@ -428,8 +430,6 @@ static void dw_i2c_plat_remove(struct platform_device *pdev)
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
-
- i2c_dw_remove_lock_support(dev);
}
static int dw_i2c_plat_prepare(struct device *dev)