diff options
| author | Jochen Eisinger <jochen@penguin-breeder.org> | 2008-05-01 04:34:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-01 08:04:00 -0700 |
| commit | 4ed99a27d161ce6f1eb6657c5cd5e6aef365c665 (patch) | |
| tree | ba052e070138f7bd8759e80361a853b8601c25fe /drivers | |
| parent | af8e2a4cb9b3e14b919ae1cd4012825aefddbeb0 (diff) | |
| download | blackbird-op-linux-4ed99a27d161ce6f1eb6657c5cd5e6aef365c665.tar.gz blackbird-op-linux-4ed99a27d161ce6f1eb6657c5cd5e6aef365c665.zip | |
i8k: make fan multiplier tunable with a module parameter
The i8k driver multiplies the fan speed reported by the BIOS with a factor of
30. On my Dell Latitude D800, this factor is not required.
I'd suggest to make this configurable.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/char/i8k.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c index f49037b744f9..b60d425ce8d1 100644 --- a/drivers/char/i8k.c +++ b/drivers/char/i8k.c @@ -77,6 +77,10 @@ static int power_status; module_param(power_status, bool, 0600); MODULE_PARM_DESC(power_status, "Report power status in /proc/i8k"); +static int fan_mult = I8K_FAN_MULT; +module_param(fan_mult, int, 0); +MODULE_PARM_DESC(fan_mult, "Factor to multiply fan speed with"); + static int i8k_open_fs(struct inode *inode, struct file *file); static int i8k_ioctl(struct inode *, struct file *, unsigned int, unsigned long); @@ -239,7 +243,7 @@ static int i8k_get_fan_speed(int fan) struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; regs.ebx = fan & 0xff; - return i8k_smm(®s) ? : (regs.eax & 0xffff) * I8K_FAN_MULT; + return i8k_smm(®s) ? : (regs.eax & 0xffff) * fan_mult; } /* |
