diff options
| author | Mark M. Hoffman <mhoffman@lightlink.com> | 2006-03-23 18:50:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-04-14 22:18:34 +0400 |
| commit | e97b81ddbb8b8c72b85330ac4a454a4513dcba8a (patch) | |
| tree | b7be59895ee5cafdd5af5b4237f5b96b2812b180 /drivers/i2c/busses/i2c-parport-light.c | |
| parent | 3cb8e1a92ef7588d3acdecf493ddddd0dd71a709 (diff) | |
| download | linux-e97b81ddbb8b8c72b85330ac4a454a4513dcba8a.tar.xz | |
[PATCH] i2c-parport: Make type parameter mandatory
This patch forces the user to specify what type of adapter is present when
loading i2c-parport or i2c-parport-light. If none is specified, the driver
init simply fails - instead of assuming adapter type 0.
This alleviates the sometimes lengthy boot time delays which can be caused
by accidentally building one of these into a kernel along with several i2c
slave drivers that have lengthy probe routines (e.g. hwmon drivers).
Kconfig and documentation updated accordingly.
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-parport-light.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-parport-light.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c index c63025a4c861..e09ebbb2f9f0 100644 --- a/drivers/i2c/busses/i2c-parport-light.c +++ b/drivers/i2c/busses/i2c-parport-light.c @@ -121,9 +121,14 @@ static struct i2c_adapter parport_adapter = { static int __init i2c_parport_init(void) { - if (type < 0 || type >= ARRAY_SIZE(adapter_parm)) { + if (type < 0) { + printk(KERN_WARNING "i2c-parport: adapter type unspecified\n"); + return -ENODEV; + } + + if (type >= ARRAY_SIZE(adapter_parm)) { printk(KERN_WARNING "i2c-parport: invalid type (%d)\n", type); - type = 0; + return -ENODEV; } if (base == 0) { |