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usb: fix serial build when SYSRQ is disabled

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Fix build error when CONFIG_MAGIC_SYSRQ is not enabled:

drivers/usb/serial/generic.c:566: error: implicit declaration of function 'handle_sysrq'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Randy Dunlap 2010-03-25 11:29:16 -07:00 committed by Greg Kroah-Hartman
parent 2a1e7d5d54
commit 7f0ae3a8ee
1 changed files with 9 additions and 0 deletions
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9
drivers/usb/serial/generic.c
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@ -12,6 +12,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/errno.h> #include <linux/errno.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/sysrq.h>
#include <linux/tty.h> #include <linux/tty.h>
#include <linux/tty_flip.h> #include <linux/tty_flip.h>
#include <linux/module.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, int usb_serial_handle_sysrq_char(struct tty_struct *tty,
struct usb_serial_port *port, unsigned int ch) struct usb_serial_port *port, unsigned int ch)
{ {
@ -571,6 +573,13 @@ int usb_serial_handle_sysrq_char(struct tty_struct *tty,
} }
return 0; 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); EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char);
int usb_serial_handle_break(struct usb_serial_port *port) int usb_serial_handle_break(struct usb_serial_port *port)