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| author | Michael Hennerich <michael.hennerich@analog.com> | 2007-05-21 18:09:20 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-21 09:50:22 -0700 |
| commit | 6e537e9329d133526a576b741f85b3d48edc4ac1 (patch) | |
| tree | 2320a9073b8e057d9f69ce1ffa89eadc8e708f8d /arch/blackfin/kernel/setup.c | |
| parent | 8a0e6656030ffe9bcb81b725e956917bafc7522d (diff) | |
| download | blackbird-op-linux-6e537e9329d133526a576b741f85b3d48edc4ac1.tar.gz blackbird-op-linux-6e537e9329d133526a576b741f85b3d48edc4ac1.zip | |
Blackfin arch: Fix bug using usb keyboard crashes kernel
Without conswitchp preset, we have the following situation:
- During initcalls: con_init is called, and returns because of
!display_desc.
- At this point there is no memory allocated for vc_cons[].d
A bit later vty_init calls kbd_init.
- From now on events are passed to kbd_event which will then call
kbd_keycode.
- kbd_keycode will oops on a NULL pointer dereference on vc->vc_tty
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
[ Added commit description based on email thread. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin/kernel/setup.c')
| -rw-r--r-- | arch/blackfin/kernel/setup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c index 342bb8dd56ac..c456ee5c1b4a 100644 --- a/arch/blackfin/kernel/setup.c +++ b/arch/blackfin/kernel/setup.c @@ -33,7 +33,6 @@ #include <linux/seq_file.h> #include <linux/cpu.h> #include <linux/module.h> -#include <linux/console.h> #include <linux/tty.h> #include <linux/ext2_fs.h> @@ -175,6 +174,9 @@ void __init setup_arch(char **cmdline_p) unsigned long mtd_phys = 0; #endif +#ifdef CONFIG_DUMMY_CONSOLE + conswitchp = &dummy_con; +#endif cclk = get_cclk(); sclk = get_sclk(); |
