Merge tag 'auxdisplay-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay

Pull auxdisplay fixes from Andy Shevchenko:

 - Fix NULL dereference in linedisp_release()

 - Fix ht16k33 DT bindings to avoid warnings

 - Handle errors in I²C transfers in lcd2s driver

* tag 'auxdisplay-v7.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
  auxdisplay: line-display: fix NULL dereference in linedisp_release
  auxdisplay: lcd2s: add error handling for i2c transfers
  dt-bindings: auxdisplay: ht16k33: Use unevaluatedProperties to fix common property warning

Author: torvalds

Documentation/devicetree/bindings/auxdisplay/holtek,ht16k33.yaml

@@ -66,7 +66,7 @@ then:
   required:
     - refresh-rate-hz
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |

drivers/auxdisplay/lcd2s.c

@@ -99,18 +99,27 @@ static int lcd2s_print(struct charlcd *lcd, int c)
 {
 	struct lcd2s_data *lcd2s = lcd->drvdata;
 	u8 buf[2] = { LCD2S_CMD_WRITE, c };
+	int ret;
 
-	lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf));
+	ret = lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(buf))
+		return -EIO;
 	return 0;
 }
 
 static int lcd2s_gotoxy(struct charlcd *lcd, unsigned int x, unsigned int y)
 {
 	struct lcd2s_data *lcd2s = lcd->drvdata;
 	u8 buf[3] = { LCD2S_CMD_CUR_POS, y + 1, x + 1 };
+	int ret;
 
-	lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf));
-
+	ret = lcd2s_i2c_master_send(lcd2s->i2c, buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(buf))
+		return -EIO;
 	return 0;
 }
 

drivers/auxdisplay/line-display.c

@@ -365,7 +365,7 @@ static DEFINE_IDA(linedisp_id);
 
 static void linedisp_release(struct device *dev)
 {
-	struct linedisp *linedisp = to_linedisp(dev);
+	struct linedisp *linedisp = container_of(dev, struct linedisp, dev);
 
 	kfree(linedisp->map);
 	kfree(linedisp->message);