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msm: kgsl: Remove 'fd' dependency to get dma_buf handle

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Get the dma_buf handle directly from 'vm_file' after
doing necessary checks on the file.

Change-Id: Id5eec16588d64e4e28483b32bb52d4d3d9b86b99
Signed-off-by: ravnar <quic_ravnar@quicinc.com>
Signed-off-by: Sanjay Yadav <quic_sanjyada@quicinc.com>
Signed-off-by: Abhishek Barman <quic_abarman@quicinc.com>
Signed-off-by: Kamal Agrawal <quic_kamaagra@quicinc.com>
This commit is contained in:
Abhishek Barman 2022-04-20 19:51:19 +05:30 • committed by Kamal Agrawal
commit db2b3cf93d
1 changed files with 7 additions and 15 deletions
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22
drivers/gpu/msm/kgsl.c
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@ -2243,15 +2243,6 @@ static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable,
}
#ifdef CONFIG_DMA_SHARED_BUFFER
static int match_file(const void *p, struct file *file, unsigned int fd)
{
/*
* We must return fd + 1 because iterate_fd stops searching on
* non-zero return, but 0 is a valid fd.
*/
return (p == file) ? (fd + 1) : 0;
}
static void _setup_cache_mode(struct kgsl_mem_entry *entry,
struct vm_area_struct *vma)
{
@ -2289,8 +2280,6 @@ static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device,
vma = find_vma(current->mm, hostptr);
if (vma && vma->vm_file) {
int fd;
ret = check_vma_flags(vma, entry->memdesc.flags);
if (ret) {
up_read(&current->mm->mmap_sem);
@ -2306,10 +2295,13 @@ static int kgsl_setup_dmabuf_useraddr(struct kgsl_device *device,
return -EFAULT;
}
/* Look for the fd that matches this the vma file */
fd = iterate_fd(current->files, 0, match_file, vma->vm_file);
if (fd != 0)
dmabuf = dma_buf_get(fd - 1);
/*
* Take a refcount because dma_buf_put() decrements the
* refcount
*/
get_file(vma->vm_file);
dmabuf = vma->vm_file->private_data;
}
if (IS_ERR_OR_NULL(dmabuf)) {