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tty: use container_of to resolve uart_pmac_port from uart_port 

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabian Frederick 2014-10-05 19:01:08 +02:00 committed by Greg Kroah-Hartman
parent a15ad34834
commit edb20c7aa5
1 changed files with 6 additions and 3 deletions
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9
drivers/tty/serial/pmac_zilog.c
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@ -1352,7 +1352,8 @@ static int pmz_verify_port(struct uart_port *port, struct serial_struct *ser)
static int pmz_poll_get_char(struct uart_port *port)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
struct uart_pmac_port *uap =
container_of(port, struct uart_pmac_port, port);
int tries = 2;
while (tries) {
@ -1367,7 +1368,8 @@ static int pmz_poll_get_char(struct uart_port *port)
static void pmz_poll_put_char(struct uart_port *port, unsigned char c)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
struct uart_pmac_port *uap =
container_of(port, struct uart_pmac_port, port);
/* Wait for the transmit buffer to empty. */
while ((read_zsreg(uap, R0) & Tx_BUF_EMP) == 0)
@ -1954,7 +1956,8 @@ static void __exit exit_pmz(void)
static void pmz_console_putchar(struct uart_port *port, int ch)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
struct uart_pmac_port *uap =
container_of(port, struct uart_pmac_port, port);
/* Wait for the transmit buffer to empty. */
while ((read_zsreg(uap, R0) & Tx_BUF_EMP) == 0)