auxdisplay: charlcd: Introduce charlcd_free() helper

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

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>

1 files changed, 1 insertions, 0 deletions

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);