linux-toradex.git/include/linux/fb.h, branch v2.6.38.5

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

2010-12-22T03:56:10+00:00

fbcmap: integer overflow bug

2010-11-17T05:55:45+00:00

There is an integer overflow in fb_set_user_cmap() because cmap->len * 2
can wrap.  It's basically harmless.  Your terminal will be messed up
until you type reset.

This patch does three things to fix the bug.

First, it checks the return value of fb_copy_cmap() in fb_alloc_cmap().
That is enough to fix address the overflow.

Second it checks for the integer overflow in fb_set_user_cmap().

Lastly I wanted to cap "cmap->len" in fb_set_user_cmap() much lower
because it gets used to determine the size of allocation.  Unfortunately
no one knows what the limit should be.  Instead what this patch does
is makes the allocation happen with GFP_KERNEL instead of GFP_ATOMIC
and lets the kmalloc() decide what values of cmap->len are reasonable.
To do this, the patch introduces a function called fb_alloc_cmap_gfp()
which is like fb_alloc_cmap() except that it takes a GFP flag.

Signed-off-by: Dan Carpenter 
Signed-off-by: Paul Mundt

fbdev: when parsing E-EDID blocks, also use SVD entries

2010-11-15T05:52:23+00:00

Add parsing of E-EDID SVD entries. In this first version only a few
CEA/EIA-861E modes are implemented, more can be added as needed.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

video: add fb_edid_add_monspecs for parsing extended edid information

2010-11-15T05:52:19+00:00

Modern monitors/tvs have more extended EDID information blocks which can
contain extra detailed modes.  This adds a fb_edid_add_monspecs function
which drivers can use to parse those additions blocks.

Signed-off-by: Erik Gilling 
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Paul Mundt

fbmem: fix fb_read, fb_write unaligned accesses

2010-10-28T01:03:08+00:00

fb_{read,write} access the framebuffer using lots of fb_{read,write}l's
but don't check that the file position is aligned which can cause problems
on some architectures which do not support unaligned accesses.

Since the operations are essentially memcpy_{from,to}io, new
fb_memcpy_{from,to}fb macros have been defined and these are used instead.

For Sparc, fb_{read,write} macros use sbus_{read,write}, so this defines
new sbus_memcpy_{from,to}io functions the same as memcpy_{from,to}io but
using sbus_{read,write}b instead of {read,write}b.

Signed-off-by: James Hogan 
Acked-by: David S. Miller 
Acked-by: Florian Tobias Schandinat 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

vt/console: try harder to print output when panicing

2010-08-10T20:47:40+00:00

Jesse's initial patch commit said:

"At panic time (i.e.  when oops_in_progress is set) we should try a bit
harder to update the screen and make sure output gets to the VT, since
some drivers are capable of flipping back to it.

So make sure we try to unblank and update the display if called from a
panic context."

I've enhanced this to add a flag to the vc that console layer can set to
indicate they want this behaviour to occur.  This also adds support to
fbcon for that flag and adds an fb flag for drivers to indicate they want
to use the support.  It enables this for KMS drivers.

Signed-off-by: Dave Airlie 
Signed-off-by: Jesse Barnes 
Acked-by: James Simmons 
Cc: Alan Cox 
Signed-off-by: Andrew Morton 
Signed-off-by: Greg Kroah-Hartman

fb: add hooks to handle KDB enter/exit

2010-08-05T14:22:31+00:00

Add fb ops to handle enter/exit of the kernel debugger.  If present, the
fb core will register them with KGDB and they'll be called when the
debugger is entered and exited.  The new functions are responsible for
switching to an appropriate debug framebuffer and restoring the
interrupted state at exit time.

Signed-off-by: Jesse Barnes 
Signed-off-by: Jason Wessel

fb: handle allocation failure in alloc_apertures()

2010-07-20T05:24:09+00:00

If the kzalloc() fails we should return NULL.  All the places that call
alloc_apertures() check for this already.

Signed-off-by: Dan Carpenter 
Acked-by: James Simmons 
Acked-by: Marcin Slusarz 
Signed-off-by: Dave Airlie

fb: fix colliding defines for fb flags.

2010-07-01T01:59:34+00:00

When I added the flags I must have been using a 25 line terminal and missed the following flags.

The collided with flag has one user in staging despite being in-tree for 5 years.

I'm happy to push this via my drm tree unless someone really wants to do it.

Signed-off-by: Dave Airlie 
Cc: stable@kernel.org

drop unused dentry argument to ->fsync

2010-05-28T02:05:02+00:00

Signed-off-by: Christoph Hellwig 
Signed-off-by: Al Viro