diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-14 18:37:04 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-03-16 09:28:15 +1100 |
| commit | 7d3d897a4697e4ff746e5e82f116b2346ed28150 (patch) | |
| tree | 740b5a83f9d354edf255f44a6072a47ec1ff7ba0 /drivers/tty/hvc/Kconfig | |
| parent | ba7a4822b48fbc7afd6b567c18e316a03f46684d (diff) | |
| download | blackbird-op-linux-7d3d897a4697e4ff746e5e82f116b2346ed28150.tar.gz blackbird-op-linux-7d3d897a4697e4ff746e5e82f116b2346ed28150.zip | |
powerpc/hvc_udbg: Don't crash when udbg_putc is NULL
Also while at it, add some help text indicating why you shouldn't
enable that driver under normal circumstances
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/tty/hvc/Kconfig')
| -rw-r--r-- | drivers/tty/hvc/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/hvc/Kconfig b/drivers/tty/hvc/Kconfig index 8ea7f078b233..48cb8d3d1758 100644 --- a/drivers/tty/hvc/Kconfig +++ b/drivers/tty/hvc/Kconfig @@ -71,6 +71,10 @@ config HVC_UDBG depends on PPC && EXPERIMENTAL select HVC_DRIVER default n + help + This is meant to be used during HW bring up or debugging when + no other console mechanism exist but udbg, to get you a quick + console for userspace. Do NOT enable in production kernels. config HVC_DCC bool "ARM JTAG DCC console" |
