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V4L/DVB: gspca - main: Don't use the PG_Reserved flag for mmapped buffers

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Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine 2010-06-24 05:14:22 -03:00 committed by Mauro Carvalho Chehab
parent a68f723cef
commit e795d912d7
1 changed files with 2 additions and 33 deletions
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35
drivers/media/video/gspca/gspca.c
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@ -506,36 +506,6 @@ static int gspca_is_compressed(__u32 format)
return 0;
}
static void *rvmalloc(long size)
{
void *mem;
unsigned long adr;
mem = vmalloc_32(size);
if (mem != NULL) {
adr = (unsigned long) mem;
while (size > 0) {
SetPageReserved(vmalloc_to_page((void *) adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
}
return mem;
}
static void rvfree(void *mem, long size)
{
unsigned long adr;
adr = (unsigned long) mem;
while (size > 0) {
ClearPageReserved(vmalloc_to_page((void *) adr));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
vfree(mem);
}
static int frame_alloc(struct gspca_dev *gspca_dev,
unsigned int count)
{
@ -550,7 +520,7 @@ static int frame_alloc(struct gspca_dev *gspca_dev,
gspca_dev->frsz = frsz;
if (count > GSPCA_MAX_FRAMES)
count = GSPCA_MAX_FRAMES;
gspca_dev->frbuf = rvmalloc(frsz * count);
gspca_dev->frbuf = vmalloc_32(frsz * count);
if (!gspca_dev->frbuf) {
err("frame alloc failed");
return -ENOMEM;
@ -582,8 +552,7 @@ static void frame_free(struct gspca_dev *gspca_dev)
PDEBUG(D_STREAM, "frame free");
if (gspca_dev->frbuf != NULL) {
rvfree(gspca_dev->frbuf,
gspca_dev->nframes * gspca_dev->frsz);
vfree(gspca_dev->frbuf);
gspca_dev->frbuf = NULL;
for (i = 0; i < gspca_dev->nframes; i++)
gspca_dev->frame[i].data = NULL;