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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2017-01-06 02:14:16 +0900 |
|---|---|---|
| committer | Mister Oyster <oysterized@gmail.com> | 2017-07-04 11:51:22 +0200 |
| commit | 86ddc29419b54c1e0d1b0264bcc720644cab6911 (patch) | |
| tree | cdcddc6b62c7f1561d8de66ab31f77c9ac53e8c9 /kernel/sysctl_binary.c | |
| parent | 2a2ac9d908229008cd754b6983224856a8256480 (diff) | |
sysrq: attach sysrq handler correctly for 32-bit kernel
commit 802c03881f29844af0252b6e22be5d2f65f93fd0 upstream.
The sysrq input handler should be attached to the input device which has
a left alt key.
On 32-bit kernels, some input devices which has a left alt key cannot
attach sysrq handler. Because the keybit bitmap in struct input_device_id
for sysrq is not correctly initialized. KEY_LEFTALT is 56 which is
greater than BITS_PER_LONG on 32-bit kernels.
I found this problem when using a matrix keypad device which defines
a KEY_LEFTALT (56) but doesn't have a KEY_O (24 == 56%32).
Cc: Jiri Slaby <jslaby@suse.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions