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staging: vme_user: remove buf_unalloc helper 

buf_unalloc is essentially a vme_free_consistent:
1) image[i].kern_buf is never NULL in buf_alloc call
2) kern_buf, pci_buf and size_buf get zeroed in vme_user_probe anyway

Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Cc: Igor Alekseev <igor.alekseev@itep.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dmitry Kalinkin 2015-06-13 16:34:03 +03:00 committed by Greg Kroah-Hartman
parent 0b029cb2f5
commit 625a9e012d
1 changed files with 4 additions and 27 deletions
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31
drivers/staging/vme/devices/vme_user.c
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@ -563,31 +563,6 @@ static const struct file_operations vme_user_fops = {
.mmap = vme_user_mmap,
};
/*
* Unallocate a previously allocated buffer
*/
static void buf_unalloc(int num)
{
if (image[num].kern_buf) {
#ifdef VME_DEBUG
pr_debug("UniverseII:Releasing buffer at %p\n",
image[num].pci_buf);
#endif
vme_free_consistent(image[num].resource, image[num].size_buf,
image[num].kern_buf, image[num].pci_buf);
image[num].kern_buf = NULL;
image[num].pci_buf = 0;
image[num].size_buf = 0;
#ifdef VME_DEBUG
} else {
pr_debug("UniverseII: Buffer not allocated\n");
#endif
}
}
static int vme_user_match(struct vme_dev *vdev)
{
int i;
@ -765,7 +740,8 @@ err_master:
err_slave:
while (i > SLAVE_MINOR) {
i--;
buf_unalloc(i);
vme_free_consistent(image[i].resource, image[i].size_buf,
image[i].kern_buf, image[i].pci_buf);
vme_slave_free(image[i].resource);
}
err_class:
@ -795,7 +771,8 @@ static int vme_user_remove(struct vme_dev *dev)
for (i = SLAVE_MINOR; i < (SLAVE_MAX + 1); i++) {
vme_slave_set(image[i].resource, 0, 0, 0, 0, VME_A32, 0);
buf_unalloc(i);
vme_free_consistent(image[i].resource, image[i].size_buf,
image[i].kern_buf, image[i].pci_buf);
vme_slave_free(image[i].resource);
}