IRQ: Maintain regs pointer globally rather than passing to IRQ handlers

[firefly-linux-kernel-4.4.55.git] / drivers / serial / mpc52xx_uart.c

diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index dbad0e31e005864cb02c72b9f293ecbc11e906d5..039c2fd6d496e86dc4d98f2a4de6b3207114cf9e 100644 (file)
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -85,7 +85,7 @@ static struct uart_port mpc52xx_uart_ports[MPC52xx_PSC_MAXNUM];
 
 
 /* Forward declaration of the interruption handling routine */
-static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id,struct pt_regs *regs);
+static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id);
 
 
 /* Simple macro to test if a port is console or not. This one is taken
@@ -410,7 +410,7 @@ static struct uart_ops mpc52xx_uart_ops = {
 /* ======================================================================== */
        
 static inline int
-mpc52xx_uart_int_rx_chars(struct uart_port *port, struct pt_regs *regs)
+mpc52xx_uart_int_rx_chars(struct uart_port *port)
 {
        struct tty_struct *tty = port->info->tty;
        unsigned char ch, flag;
@@ -425,7 +425,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port, struct pt_regs *regs)
 
                /* Handle sysreq char */
 #ifdef SUPPORT_SYSRQ
-               if (uart_handle_sysrq_char(port, ch, regs)) {
+               if (uart_handle_sysrq_char(port, ch)) {
                        port->sysrq = 0;
                        continue;
                }
@@ -510,7 +510,7 @@ mpc52xx_uart_int_tx_chars(struct uart_port *port)
 }
 
 static irqreturn_t 
-mpc52xx_uart_int(int irq, void *dev_id, struct pt_regs *regs)
+mpc52xx_uart_int(int irq, void *dev_id)
 {
        struct uart_port *port = (struct uart_port *) dev_id;
        unsigned long pass = ISR_PASS_LIMIT;
@@ -539,7 +539,7 @@ mpc52xx_uart_int(int irq, void *dev_id, struct pt_regs *regs)
                /* Do we need to receive chars ? */
                /* For this RX interrupts must be on and some chars waiting */
                if ( status & MPC52xx_PSC_IMR_RXRDY )
-                       keepgoing |= mpc52xx_uart_int_rx_chars(port, regs);
+                       keepgoing |= mpc52xx_uart_int_rx_chars(port);
 
                /* Do we need to send chars ? */
                /* For this, TX must be ready and TX interrupt enabled */