i2c: designware: Use the i2c_mark_adapter_suspended/resumed() helpers

Use the i2c_mark_adapter_suspended/resumed() i2c-core helpers and rely
on the i2c-core's suspended checking instead of using DIY code.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

drivers/i2c/busses/i2c-designware-core.h

@@ -236,7 +236,6 @@ struct reset_control;
  * @set_sda_hold_time: callback to retrieve IP specific SDA hold timing
  * @mode: operation mode - DW_IC_MASTER or DW_IC_SLAVE
  * @rinfo: I²C GPIO recovery information
- * @suspended: set to true if the controller is suspended
  *
  * HCNT and LCNT parameters can be used if the platform knows more accurate
  * values than the one computed based only on the input clock frequency.
@@ -295,7 +294,6 @@ struct dw_i2c_dev {
 	int			(*set_sda_hold_time)(struct dw_i2c_dev *dev);
 	int			mode;
 	struct i2c_bus_recovery_info rinfo;
-	bool			suspended;
 };
 
 #define ACCESS_INTR_MASK	BIT(0)

drivers/i2c/busses/i2c-designware-master.c

@@ -567,11 +567,6 @@ i2c_dw_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num)
 		goto done_nolock;
 	}
 
-	if (dev_WARN_ONCE(dev->dev, dev->suspended, "Transfer while suspended\n")) {
-		ret = -ESHUTDOWN;
-		goto done_nolock;
-	}
-
 	reinit_completion(&dev->cmd_complete);
 	dev->msgs = msgs;
 	dev->msgs_num = num;

drivers/i2c/busses/i2c-designware-pcidrv.c

@@ -206,9 +206,7 @@ static int __maybe_unused i2c_dw_pci_suspend(struct device *dev)
 {
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
-	i2c_lock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
-	i_dev->suspended = true;
-	i2c_unlock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
+	i2c_mark_adapter_suspended(&i_dev->adapter);
 
 	return i2c_dw_pci_runtime_suspend(dev);
 }
@@ -227,9 +225,7 @@ static int __maybe_unused i2c_dw_pci_resume(struct device *dev)
 
 	ret = i2c_dw_pci_runtime_resume(dev);
 
-	i2c_lock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
-	i_dev->suspended = false;
-	i2c_unlock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
+	i2c_mark_adapter_resumed(&i_dev->adapter);
 
 	return ret;
 }

drivers/i2c/busses/i2c-designware-platdrv.c

@@ -445,9 +445,7 @@ static int dw_i2c_plat_suspend(struct device *dev)
 {
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
-	i2c_lock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
-	i_dev->suspended = true;
-	i2c_unlock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
+	i2c_mark_adapter_suspended(&i_dev->adapter);
 
 	return dw_i2c_plat_runtime_suspend(dev);
 }
@@ -469,10 +467,7 @@ static int dw_i2c_plat_resume(struct device *dev)
 	struct dw_i2c_dev *i_dev = dev_get_drvdata(dev);
 
 	dw_i2c_plat_runtime_resume(dev);
-
-	i2c_lock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
-	i_dev->suspended = false;
-	i2c_unlock_bus(&i_dev->adapter, I2C_LOCK_ROOT_ADAPTER);
+	i2c_mark_adapter_resumed(&i_dev->adapter);
 
 	return 0;
 }