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ARM: meson: serial: convert iounmap to devm_iounmap 

The function meson_uart_release_port() inappropriately try to
iounmap() a resource managed by devm_ioremap_nocache().
The function meson_uart_release_port() maybe called by uart_ioctl()
that means meson_uart_release_port() is not called from within a
probe or remove function, for safety, I convert iounmap() to
devm_iounmap().

Signed-off-by: Firo Yang <firogm@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Firo Yang 2015-04-26 18:46:06 +08:00 committed by Greg Kroah-Hartman
parent eda0cd3546
commit c547630f6b
1 changed files with 1 additions and 1 deletions
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2
drivers/tty/serial/meson_uart.c
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@ -370,7 +370,7 @@ static int meson_uart_verify_port(struct uart_port *port,
static void meson_uart_release_port(struct uart_port *port)
{
if (port->flags & UPF_IOREMAP) {
iounmap(port->membase);
devm_iounmap(port->dev, port->membase);
port->membase = NULL;
}
}