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authorUwe Kleine-König <u.kleine-koenig@pengutronix.de>2013-08-07 13:02:54 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-13 00:46:51 +0200
commitb65c4014efbcfa37df91c00dfaea4b3f17ac4eb7 (patch)
treefca0b4228be45e7d10fdca7bb551409cf635efb7 /drivers
parentuio: provide vm access to UIO_MEM_PHYS maps (diff)
downloadlinux-b65c4014efbcfa37df91c00dfaea4b3f17ac4eb7.tar.xz
linux-b65c4014efbcfa37df91c00dfaea4b3f17ac4eb7.zip
uio: drop unused vma_count member in uio_device struct
vma_count is used write-only and so fails to be useful. So remove it. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/uio/uio.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index c4279b2234ac..8abe78c0b16f 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -35,7 +35,6 @@ struct uio_device {
atomic_t event;
struct fasync_struct *async_queue;
wait_queue_head_t wait;
- int vma_count;
struct uio_info *info;
struct kobject *map_dir;
struct kobject *portio_dir;
@@ -593,18 +592,6 @@ static int uio_find_mem_index(struct vm_area_struct *vma)
return -1;
}
-static void uio_vma_open(struct vm_area_struct *vma)
-{
- struct uio_device *idev = vma->vm_private_data;
- idev->vma_count++;
-}
-
-static void uio_vma_close(struct vm_area_struct *vma)
-{
- struct uio_device *idev = vma->vm_private_data;
- idev->vma_count--;
-}
-
static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct uio_device *idev = vma->vm_private_data;
@@ -631,8 +618,6 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
}
static const struct vm_operations_struct uio_logical_vm_ops = {
- .open = uio_vma_open,
- .close = uio_vma_close,
.fault = uio_vma_fault,
};
@@ -640,7 +625,6 @@ static int uio_mmap_logical(struct vm_area_struct *vma)
{
vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
vma->vm_ops = &uio_logical_vm_ops;
- uio_vma_open(vma);
return 0;
}