linux-kernel - [PATCH v2 3/5] auxdisplay: charlcd: Introduce charlcd

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Date:   Tue, 12 Mar 2019 16:44:30 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Miguel Ojeda Sandonis <miguel.ojeda.sandonis@...il.com>,
        Willy Tarreau <willy@...roxy.com>, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH v2 3/5] auxdisplay: charlcd: Introduce charlcd_free() helper

The charlcd_free() is a counterpart to charlcd_alloc()
and should be called symmetrically on tear down.

Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/auxdisplay/charlcd.c | 6 ++++++
 include/misc/charlcd.h       | 1 +
 2 files changed, 7 insertions(+)

diff --git a/drivers/auxdisplay/charlcd.c b/drivers/auxdisplay/charlcd.c
index 407acd22efa8..a351a9400054 100644
--- a/drivers/auxdisplay/charlcd.c
+++ b/drivers/auxdisplay/charlcd.c
@@ -818,6 +818,12 @@ struct charlcd *charlcd_alloc(unsigned int drvdata_size)
 }
 EXPORT_SYMBOL_GPL(charlcd_alloc);
 
+void charlcd_free(struct charlcd *lcd)
+{
+	kfree(charlcd_to_priv(lcd));
+}
+EXPORT_SYMBOL_GPL(charlcd_free);
+
 static int panel_notify_sys(struct notifier_block *this, unsigned long code,
 			    void *unused)
 {
diff --git a/include/misc/charlcd.h b/include/misc/charlcd.h
index 23f61850f363..1832402324ce 100644
--- a/include/misc/charlcd.h
+++ b/include/misc/charlcd.h
@@ -35,6 +35,7 @@ struct charlcd_ops {
 };
 
 struct charlcd *charlcd_alloc(unsigned int drvdata_size);
+void charlcd_free(struct charlcd *lcd);
 
 int charlcd_register(struct charlcd *lcd);
 int charlcd_unregister(struct charlcd *lcd);
-- 
2.20.1