Revert "arm pl011 serial: support multi-irq request"

This reverts commit b0819465be8be0c76af15436a9e6db4dab4c196e which
results in amba_device-specific code being called from
sbsa_uart_startup() and sbsa_uart_shutdown().

Signed-off-by: Qian Cai <quic_qiancai@quicinc.com>
Link: https://lore.kernel.org/r/20210813163135.205-1-quic_qiancai@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index cf6ff22..d361cd8 100644 (file)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1777,39 +1777,11 @@ static void pl011_write_lcr_h(struct uart_amba_port *uap, unsigned int lcr_h)
        }
 }
 
-static void pl011_release_irq(struct uart_amba_port *uap, unsigned int max_cnt)
-{
-       struct amba_device *amba_dev = container_of(uap->port.dev, struct amba_device, dev);
-       int i;
-
-       for (i = 0; i < max_cnt; i++)
-               if (amba_dev->irq[i])
-                       free_irq(amba_dev->irq[i], uap);
-}
-
 static int pl011_allocate_irq(struct uart_amba_port *uap)
 {
-       int ret = 0;
-       int i;
-       unsigned int virq;
-       struct amba_device *amba_dev = container_of(uap->port.dev, struct amba_device, dev);
-
        pl011_write(uap->im, uap, REG_IMSC);
 
-       for (i = 0; i < AMBA_NR_IRQS; i++) {
-               virq = amba_dev->irq[i];
-               if (virq == 0)
-                       break;
-
-               ret = request_irq(virq, pl011_int, IRQF_SHARED, dev_name(&amba_dev->dev), uap);
-               if (ret) {
-                       dev_err(uap->port.dev, "request %u interrupt failed\n", virq);
-                       pl011_release_irq(uap, i - 1);
-                       break;
-               }
-       }
-
-       return ret;
+       return request_irq(uap->port.irq, pl011_int, IRQF_SHARED, "uart-pl011", uap);
 }
 
 /*
@@ -1981,7 +1953,7 @@ static void pl011_shutdown(struct uart_port *port)
        if ((port->rs485.flags & SER_RS485_ENABLED) && uap->rs485_tx_started)
                pl011_rs485_tx_stop(uap);
 
-       pl011_release_irq(uap, AMBA_NR_IRQS);
+       free_irq(uap->port.irq, uap);
 
        pl011_disable_uart(uap);
 
@@ -2011,7 +1983,7 @@ static void sbsa_uart_shutdown(struct uart_port *port)
 
        pl011_disable_interrupts(uap);
 
-       pl011_release_irq(uap, AMBA_NR_IRQS);
+       free_irq(uap->port.irq, uap);
 
        if (uap->port.ops->flush_buffer)
                uap->port.ops->flush_buffer(port);