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auxdisplay: charlcd: Introduce charlcd_free() helper

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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>
This commit is contained in:
Andy Shevchenko 2019-03-12 16:44:30 +02:00 committed by Miguel Ojeda
parent b658a2113b
commit 8e44fc8506
2 changed files with 7 additions and 0 deletions
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6
drivers/auxdisplay/charlcd.c
View File

@ -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)
{

1
include/misc/charlcd.h
View File

@ -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);