kernel-ark/drivers/gpu/drm/ttm
Peter Senna Tschudin 33cce6e980 drivers/gpu/drm/ttm/ttm_page_alloc_dma.c: Remove useless kfree
Remove useless kfree() and clean up code related to the removal.

The semantic patch that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
position p1,p2;
expression x;
@@

if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; }

@unchanged exists@
position r.p1,r.p2;
expression e <= r.x,x,e1;
iterator I;
statement S;
@@

if (x@p1 == NULL) { ... when != I(x,...) S
                        when != e = e1
                        when != e += e1
                        when != e -= e1
                        when != ++e
                        when != --e
                        when != e++
                        when != e--
                        when != &e
   kfree@p2(x); ... return ...; }

@ok depends on unchanged exists@
position any r.p1;
position r.p2;
expression x;
@@

... when != true x@p1 == NULL
kfree@p2(x);

@depends on !ok && unchanged@
position r.p2;
expression x;
@@

*kfree@p2(x);
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2012-10-02 09:33:26 +10:00
..
Makefile
ttm_agp_backend.c
ttm_bo_manager.c
ttm_bo_util.c drm: Handle io prot correctly for MIPS. 2012-08-24 09:41:05 +10:00
ttm_bo_vm.c
ttm_bo.c
ttm_execbuf_util.c
ttm_lock.c
ttm_memory.c
ttm_module.c
ttm_object.c
ttm_page_alloc_dma.c drivers/gpu/drm/ttm/ttm_page_alloc_dma.c: Remove useless kfree 2012-10-02 09:33:26 +10:00
ttm_page_alloc.c
ttm_tt.c gpu/drm/ttm: use copy_highpage 2012-10-02 09:26:17 +10:00