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kgdb: depends on VT

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With VT=n, the kernel build fails with:

  drivers/built-in.o: In function `kgdboc_pre_exp_handler':
  kgdboc.c:(.text+0x7b5aa): undefined reference to `fg_console'
  kgdboc.c:(.text+0x7b5ce): undefined reference to `vc_cons'
  kgdboc.c:(.text+0x7b5d5): undefined reference to `vc_cons'

kgdboc.o is built when KGDB_SERIAL_CONSOLE is set.  So make
KGDB_SERIAL_CONSOLE depend on HW_CONSOLE which includes those symbols.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jiri Slaby <[email protected]>
Reported-by: "Jim Davis" <[email protected]>
Acked-by: Jason Wessel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jiri Slaby 2016-05-23 16:26:20 -07:00 • committed by Linus Torvalds
commit c5d2cac0f1
1 changed files with 1 additions and 1 deletions
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2
lib/Kconfig.kgdb
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@ -22,7 +22,7 @@ config KGDB_SERIAL_CONSOLE
tristate "KGDB: use kgdb over the serial console"
select CONSOLE_POLL
select MAGIC_SYSRQ
depends on TTY
depends on TTY && HW_CONSOLE
default y
help
Share a serial console with kgdb. Sysrq-g must be used