* Copyright (C) 2016 Jeremy Kerr <jk@ozlabs.org>, IBM Corp.
* Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp.
*/
+#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
#include <linux/device.h>
#include <linux/module.h>
#include <linux/of_address.h>
if (lsr & UART_LSR_THRE)
serial8250_tx_chars(up);
- spin_unlock_irqrestore(&port->lock, flags);
+ uart_unlock_and_check_sysrq(port, flags);
return 1;
}
// SPDX-License-Identifier: GPL-2.0
+#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
#include <linux/serial_reg.h>
#include <linux/serial_8250.h>
serial8250_tx_chars(up);
up->lsr_saved_flags = orig_lsr;
- spin_unlock_irqrestore(&up->port.lock, flags);
+ uart_unlock_and_check_sysrq(&up->port, flags);
return 1;
}
EXPORT_SYMBOL_GPL(fsl8250_handle_irq);
*
*/
+#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
}
}
- spin_unlock_irqrestore(&port->lock, flags);
+ uart_unlock_and_check_sysrq(port, flags);
serial8250_rpm_put(up);
return 1;
}
else if (lsr & UART_LSR_FE)
flag = TTY_FRAME;
}
- if (uart_handle_sysrq_char(port, ch))
+ if (uart_prepare_sysrq_char(port, ch))
return;
uart_insert_char(port, lsr, UART_LSR_OE, ch, flag);
if ((!up->dma || up->dma->tx_err) && (status & UART_LSR_THRE))
serial8250_tx_chars(up);
- spin_unlock_irqrestore(&port->lock, flags);
+ uart_unlock_and_check_sysrq(port, flags);
return 1;
}
EXPORT_SYMBOL_GPL(serial8250_handle_irq);
serial8250_rpm_get(up);
- if (port->sysrq)
- locked = 0;
- else if (oops_in_progress)
+ if (oops_in_progress)
locked = spin_trylock_irqsave(&port->lock, flags);
else
spin_lock_irqsave(&port->lock, flags);