linux-toradex.git/drivers/pps/pps.c, branch v4.15-rc1

pps: fix padding issue with PPS_FETCH for ioctl_compat

2017-03-17T06:10:49+00:00

Issue is that x86 32-bit aligns to 4-bytes instead of 8-bytes
so this patchset works around the issue and corrects the data
returned in pps_fdata_compat.

Acked-by: Rodolfo Giometti 
Signed-off-by: Matt Ranostay 
Signed-off-by: Greg Kroah-Hartman

pps: add ioctl_compat function to correct ioctl definitions

2017-03-17T06:10:49+00:00

ioctl definitions use the pointer size of the architecture which
is fine when userspace and kernel are the same bitsize. This
patchset workarounds an issue with mixed bitsize kernel + userspace
by rewriting the cmd to the kernelspace architecture pointer size.

Acked-by: Rodolfo Giometti 
Signed-off-by: Matt Ranostay 
Signed-off-by: Greg Kroah-Hartman

PPS: convert class code to use dev_groups

2013-08-20T04:22:34+00:00

The dev_attrs field of struct class is going away soon, dev_groups
should be used instead.  This converts the pps class code to use the
correct field.

Cc: Rodolfo Giometti 
Signed-off-by: Greg Kroah-Hartman

pps: convert to idr_alloc()

2013-02-28T03:10:18+00:00

Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo 
Cc: Rodolfo Giometti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pps: Fix a use-after free bug when unregistering a source.

2013-02-13T17:40:35+00:00

Remove the cdev from the system (with cdev_del) *before* deallocating it
(in pps_device_destruct, called via kobject_put from device_destroy).

Also prevent deallocating a device with open file handles.

A better long-term fix is probably to remove the cdev from the pps_device
entirely, and instead have all devices reference one global cdev.  Then
the deallocation ordering becomes simpler.

But that's more complex and invasive change, so we leave that
for later.

Signed-off-by: George Spelvin 
Cc: stable 
Acked-by: Rodolfo Giometti 
Signed-off-by: Greg Kroah-Hartman

pps: Add pps_lookup_dev() function

2013-02-13T17:40:35+00:00

The PPS serial line discipline wants to attach a PPS device to a tty
without changing the tty code to add a struct pps_device * pointer.

Since the number of PPS devices in a typical system is generally very low
(n=1 is by far the most common), it's practical to search the entire list
of allocated pps devices.  (We capture the timestamp before the lookup,
so the timing isn't affected.)

It is a bit ugly that this function, which is part of the in-kernel
PPS API, has to be in pps.c as opposed to kapi,c, but that's not
something that affects users.

Signed-off-by: George Spelvin 
Acked-by: Rodolfo Giometti 
Cc: stable 
Signed-off-by: Greg Kroah-Hartman

idr: rename MAX_LEVEL to MAX_IDR_LEVEL

2012-10-05T18:04:56+00:00

To avoid name conflicts:

  drivers/video/riva/fbdev.c:281:9: sparse: preprocessor token MAX_LEVEL redefined

While at it, also make the other names more consistent and add
parentheses.

[akpm@linux-foundation.org: repair fallout]
[sfr@canb.auug.org.au: IB/mlx4: fix for MAX_ID_MASK to MAX_IDR_MASK name change]
Signed-off-by: Fengguang Wu 
Cc: Bernd Petrovitsch 
Cc: walter harms 
Cc: Glauber Costa 
Signed-off-by: Stephen Rothwell 
Cc: Roland Dreier 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pps: return PTR_ERR on error in device_create

2012-07-31T00:25:21+00:00

We should return PTR_ERR if the call to the device_create function fails.
Without this patch we instead return the value from a successful call to
cdev_add if the call to device_create fails.

Signed-off-by: Emil Goode 
Acked-by: Devendra Naga 
Cc: Alexander Gordeev 
Cc: Rodolfo Giometti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pps: class_create() returns an ERR_PTR, not NULL

2012-03-05T23:49:43+00:00

class_create() never returns NULLs only ERR_PTRs.

Signed-off-by: Dan Carpenter 
Cc: Rodolfo Giometti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pps: add kernel consumer support

2011-01-13T16:03:21+00:00

Add an optional feature of PPSAPI, kernel consumer support, which uses the
added hardpps() function.

Signed-off-by: Alexander Gordeev 
Acked-by: Rodolfo Giometti 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds