linux-stable.git/drivers/uio, branch v3.11.8

Fix a few incorrectly checked [io_]remap_pfn_range() calls

2013-11-13T03:08:10+00:00

commit 7314e613d5ff9f0934f7a0f74ed7973b903315d1 upstream.

Nico Golde reports a few straggling uses of [io_]remap_pfn_range() that
really should use the vm_iomap_memory() helper.  This trivially converts
two of them to the helper, and comments about why the third one really
needs to continue to use remap_pfn_range(), and adds the missing size
check.

Reported-by: Nico Golde 
Signed-off-by: Linus Torvalds

uio: provide vm access to UIO_MEM_PHYS maps

2013-11-13T03:08:10+00:00

commit 7294151d0592e0ff48c61fca9fd7c93d613134da upstream.

This makes it possible to let gdb access mappings of the process that is
being debugged.

uio_mmap_logical was moved and uio_vm_ops renamed to group related code
and differentiate to new stuff.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman

uio: use vma_pages() to replace (vm_end - vm_start) >> PAGE_SHIFT

2013-07-03T23:07:26+00:00

(*->vm_end - *->vm_start) >> PAGE_SHIFT operation is implemented
as a inline funcion vma_pages() in linux/mm.h, so using it.

Signed-off-by: Libin 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers: uio_pdrv_genirq: Use of_match_ptr() macro

2013-06-26T00:22:30+00:00

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat 
Signed-off-by: Greg Kroah-Hartman

UIO: Fix concurrency issue

2013-06-24T23:31:21+00:00

In a SMP case there was a race condition issue between
uio_pdrv_genirq_irqcontrol() running on one CPU and irq handler on
another CPU. Fix it by spin_locking shared resources access inside irq
handler.  Also:
  - Change disable_irq to disable_irq_nosync to avoid deadlock, because
    disable_irq waits for the completion of the irq handler;
  - Change atomic bit-manipulation routines to their non-atomic
    counterparts as we already are guarding the code by spinlock.

Signed-off-by: Vitalii Demianets 
Reviewed-by: Pavel Machek 
Signed-off-by: Greg Kroah-Hartman

drivers: uio_dmem_genirq: Use of_match_ptr() macro

2013-06-24T23:29:59+00:00

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat 
Acked-by: Damian Hobson-Garcia 
Signed-off-by: Greg Kroah-Hartman

UIO: fix uio_pdrv_genirq with device tree but no interrupt

2013-06-18T22:44:59+00:00

If device is initialized from device tree, but has no interrupt
assigned, uio will still try to request and interrupt old way,
fails, and fails registration.

This is wrong; don't try initializing irq using platform data if
device tree is available.

Simplified code based on suggestion by Grant Likely.

Fixed memory leak in "irq can not be registered" error path.

Signed-off-by: Pavel Machek 
Reported-by: Detlev Zundel 
Signed-off-by: Greg Kroah-Hartman

UIO: allow binding uio_pdrv_genirq.c to devices using command line option

2013-06-18T22:44:59+00:00

This adds ability to bind uio driver to given open firmware device
using command line option. Thus, userspace driver can be developed and
used without modifying the kernel.

Signed-off-by: Pavel Machek 
Tested-by: Detlev Zundel 
Signed-off-by: Greg Kroah-Hartman

uio: uio_pruss: Fix potential NULL pointer dereference

2013-06-06T19:54:09+00:00

In function pruss_probe we free gdev and try to use
it on the next line. I have moved the dereference to
above the kfree of gdev.

Signed-off-by: Emil Goode 
Signed-off-by: Greg Kroah-Hartman

Merge 3.10-rc3 into char-misc-next

2013-05-27T01:40:19+00:00

We want the changes in here.

Signed-off-by: Greg Kroah-Hartman