diff options
| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2007-11-18 11:18:29 (GMT) |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2007-11-19 21:10:04 (GMT) |
| commit | 59f91ff11e594913a5b3c03a4707fdf02338c8df (patch) | |
| tree | 112aedb786b0785972f55853157ebe4752fc6265 /kernel/rwsem.c | |
| parent | 4273af8d08c823d5898a2b1c2d0f25b4a8b9eaee (diff) | |
| download | linux-fsl-qoriq-59f91ff11e594913a5b3c03a4707fdf02338c8df.tar.xz | |
ACPI: thinkpad-acpi: fix oops when a module parameter has no value
set_ibm_param() could OOPS with a NULL pointer derreference if one did not give
any values for a module parameter it handles. This would, of course, cause all
sort of trouble for future modprobing and require a reboot to clean up
properly.
Fix it by returning -EINVAL if no values are given for the parameter, and also
avoid any nastyness from BUG_ON while at it.
How to reproduce: modprobe thinkpad-acpi brightness
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Tested-by: Mike Kershaw <dragorn@kismetwireless.net>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'kernel/rwsem.c')
0 files changed, 0 insertions, 0 deletions