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path: root/drivers/usb/serial/generic.c
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Diffstat (limited to 'drivers/usb/serial/generic.c')
-rw-r--r--drivers/usb/serial/generic.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index ba61c745df0b..a5e610976689 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
+#include <linux/sysrq.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
@@ -558,6 +559,7 @@ void usb_serial_generic_unthrottle(struct tty_struct *tty)
}
}
+#ifdef CONFIG_MAGIC_SYSRQ
int usb_serial_handle_sysrq_char(struct tty_struct *tty,
struct usb_serial_port *port, unsigned int ch)
{
@@ -571,6 +573,13 @@ int usb_serial_handle_sysrq_char(struct tty_struct *tty,
}
return 0;
}
+#else
+int usb_serial_handle_sysrq_char(struct tty_struct *tty,
+ struct usb_serial_port *port, unsigned int ch)
+{
+ return 0;
+}
+#endif
EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char);
int usb_serial_handle_break(struct usb_serial_port *port)
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