6 files changed, 14 insertions, 11 deletions
diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig
index 21545ffba065..2a9bb31633a7 100644
--- a/drivers/auxdisplay/Kconfig
+++ b/drivers/auxdisplay/Kconfig
@@ -503,6 +503,7 @@ config HT16K33
 config MAX6959
 	tristate "Maxim MAX6958/6959 7-segment LED controller"
 	depends on I2C
+	select BITREVERSE
 	select REGMAP_I2C
 	select LINEDISP
 	help
diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
index 19b619376d48..09020bb8ad15 100644
--- a/drivers/auxdisplay/charlcd.c
+++ b/drivers/auxdisplay/charlcd.c
@@ -595,18 +595,19 @@ static int charlcd_init(struct charlcd *lcd)
 	return 0;
 }
 
-struct charlcd *charlcd_alloc(void)
+struct charlcd *charlcd_alloc(unsigned int drvdata_size)
 {
 	struct charlcd_priv *priv;
 	struct charlcd *lcd;
 
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	priv = kzalloc(sizeof(*priv) + drvdata_size, GFP_KERNEL);
 	if (!priv)
 		return NULL;
 
 	priv->esc_seq.len = -1;
 
 	lcd = &priv->lcd;
+	lcd->drvdata = priv->drvdata;
 
 	return lcd;
 }
diff --git a/drivers/auxdisplay/charlcd.h b/drivers/auxdisplay/charlcd.h
index 4d4287209d04..d10b89740bca 100644
--- a/drivers/auxdisplay/charlcd.h
+++ b/drivers/auxdisplay/charlcd.h
@@ -51,7 +51,7 @@ struct charlcd {
 		unsigned long y;
 	} addr;
 
-	void *drvdata;
+	void *drvdata;			/* Set by charlcd_alloc() */
 };
 
 /**
@@ -95,7 +95,8 @@ struct charlcd_ops {
 };
 
 void charlcd_backlight(struct charlcd *lcd, enum charlcd_onoff on);
-struct charlcd *charlcd_alloc(void);
+
+struct charlcd *charlcd_alloc(unsigned int drvdata_size);
 void charlcd_free(struct charlcd *lcd);
 
 int charlcd_register(struct charlcd *lcd);
diff --git a/drivers/auxdisplay/hd44780.c b/drivers/auxdisplay/hd44780.c
index 025dc6855cb2..9428f951c9bf 100644
--- a/drivers/auxdisplay/hd44780.c
+++ b/drivers/auxdisplay/hd44780.c
@@ -226,7 +226,7 @@ static int hd44780_probe(struct platform_device *pdev)
 	if (!hdc)
 		return -ENOMEM;
 
-	lcd = charlcd_alloc();
+	lcd = charlcd_alloc(0);
 	if (!lcd)
 		goto fail1;
 
@@ -313,7 +313,7 @@ static int hd44780_probe(struct platform_device *pdev)
 fail3:
 	kfree(hd);
 fail2:
-	kfree(lcd);
+	charlcd_free(lcd);
 fail1:
 	kfree(hdc);
 	return ret;
@@ -328,7 +328,7 @@ static void hd44780_remove(struct platform_device *pdev)
 	kfree(hdc->hd44780);
 	kfree(lcd->drvdata);
 
-	kfree(lcd);
+	charlcd_free(lcd);
 }
 
 static const struct of_device_id hd44780_of_match[] = {
diff --git a/drivers/auxdisplay/lcd2s.c b/drivers/auxdisplay/lcd2s.c
index 6422be0dfe20..0ecf6a9469f2 100644
--- a/drivers/auxdisplay/lcd2s.c
+++ b/drivers/auxdisplay/lcd2s.c
@@ -307,7 +307,7 @@ static int lcd2s_i2c_probe(struct i2c_client *i2c)
 	if (err < 0)
 		return err;
 
-	lcd = charlcd_alloc();
+	lcd = charlcd_alloc(0);
 	if (!lcd)
 		return -ENOMEM;
 
diff --git a/drivers/auxdisplay/panel.c b/drivers/auxdisplay/panel.c
index a731f28455b4..4da142692d55 100644
--- a/drivers/auxdisplay/panel.c
+++ b/drivers/auxdisplay/panel.c
@@ -835,7 +835,7 @@ static void lcd_init(void)
 	if (!hdc)
 		return;
 
-	charlcd = charlcd_alloc();
+	charlcd = charlcd_alloc(0);
 	if (!charlcd) {
 		kfree(hdc);
 		return;
@@ -1664,7 +1664,7 @@ err_lcd_unreg:
 	if (lcd.enabled)
 		charlcd_unregister(lcd.charlcd);
 err_unreg_device:
-	kfree(lcd.charlcd);
+	charlcd_free(lcd.charlcd);
 	lcd.charlcd = NULL;
 	parport_unregister_device(pprt);
 	pprt = NULL;
@@ -1692,7 +1692,7 @@ static void panel_detach(struct parport *port)
 		charlcd_unregister(lcd.charlcd);
 		lcd.initialized = false;
 		kfree(lcd.charlcd->drvdata);
-		kfree(lcd.charlcd);
+		charlcd_free(lcd.charlcd);
 		lcd.charlcd = NULL;
 	}