linux/drivers/i2c/i2c-dev.c, branch v3.2.38

i2c: Make i2cdev_notifier_call static

2011-11-23T10:33:07Z

The function i2cdev_notifier_call is used only in i2c-dev file making it static. Also removes the following sparse warning drivers/i2c/i2c-dev.c:582:5: warning: symbol 'i2cdev_notifier_call' was not declared. Should it be static? Signed-off-by: Shubhrajyoti D Signed-off-by: Jean Delvare

i2c-dev: Use standard bus notification mechanism

2011-03-20T13:50:52Z

Use the standard driver core mechanism to keep track of i2c adapters present on the system: i2c_for_each_dev and a notifier. This will let us deprecate and ultimately remove the legacy attach_adapter and detach_adapter callbacks in i2c_driver. Signed-off-by: Jean Delvare

i2c: Let i2c_parent_is_i2c_adapter return the parent adapter

2010-10-24T16:16:57Z

This makes the calling site's code clearer IMHO. Signed-off-by: Jean Delvare Acked-by: Michael Lawnick

i2c: Multiplexed I2C bus core support

2010-08-11T16:21:02Z

Add multiplexed bus core support. I2C multiplexer and switches like pca954x get instantiated as new adapters per port. Signed-off-by: Michael Lawnick Acked-by: Rodolfo Giometti Signed-off-by: Jean Delvare

i2c-dev: Use memdup_user

2010-08-11T16:20:55Z

Use memdup_user when user data is immediately copied into the allocated region. Note that in the second case, the ++i is no longer necessary, as the last value is already freed if needed by the call to memdup_user. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; position p; identifier l1,l2; @@ - to = \(kmalloc@p\|kzalloc@p\)(size,flag); + to = memdup_user(from,size); if ( - to==NULL + IS_ERR(to) || ...) { <+... when != goto l1; - -ENOMEM + PTR_ERR(to) ...+> } - if (copy_from_user(to, from, size) != 0) { - <+... when != goto l2; - -EFAULT - ...+> - } // Signed-off-by: Julia Lawall Signed-off-by: Jean Delvare

i2c-dev: Remove unnecessary kmalloc casts

2010-08-11T16:20:54Z

Signed-off-by: Joe Perches Signed-off-by: Jean Delvare

i2c-dev: Fix all coding style issues

2010-05-21T16:40:59Z

Fix all coding style issues found by checkpatch.pl. Signed-off-by: Farid Hammane Signed-off-by: Jean Delvare

i2c-dev: Remove unnecessary casts

2010-05-21T16:40:57Z

The private_data member of struct file is a void *, there is no need to cast it. Signed-off-by: H Hartley Sweeten Signed-off-by: Jean Delvare

i2c: Remove big kernel lock from i2cdev_open

2009-12-06T16:06:26Z

The BKL is held over a kmalloc so cannot protect anything beyond that. The two calls before the kmalloc have their own locking. Improve device open function by removing the now unnecessary ret variable Signed-off-by: Vincent Sanders Signed-off-by: Thomas Gleixner Signed-off-by: Jean Delvare

i2c-dev: Clarify the unit of ioctl I2C_TIMEOUT

2009-02-24T18:19:49Z

The unit in which user-space can set the bus timeout value is jiffies for historical reasons (back when HZ was always 100.) This is however not good because user-space doesn't know how long a jiffy lasts. The timeout value should instead be set in a fixed time unit. Given the original value of HZ, this unit should be 10 ms, for compatibility. Signed-off-by: Jean Delvare Acked-by: Wolfram Sang