On 08/09/2025 22:15, Thorsten Blum wrote:
Replace kzalloc() followed by copy_from_user() with memdup_user() to
improve and simplify ta_if_load_debugfs_write() and
ta_if_invoke_debugfs_write().
No functional changes intended.
Signed-off-by: Thorsten Blum <thorsten.b...@linux.dev>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c | 20 ++++++--------------
1 file changed, 6 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
index 38face981c3e..6e8aad91bcd3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
@@ -171,13 +171,9 @@ static ssize_t ta_if_load_debugfs_write(struct file *fp,
const char *buf, size_t
copy_pos += sizeof(uint32_t);
- ta_bin = kzalloc(ta_bin_len, GFP_KERNEL);
- if (!ta_bin)
- return -ENOMEM;
- if (copy_from_user((void *)ta_bin, &buf[copy_pos], ta_bin_len)) {
- ret = -EFAULT;
- goto err_free_bin;
- }
+ ta_bin = memdup_user(&buf[copy_pos], ta_bin_len);
+ if (IS_ERR(ta_bin))
+ return PTR_ERR(ta_bin);
/* Set TA context and functions */
set_ta_context_funcs(psp, ta_type, &context);
@@ -327,13 +323,9 @@ static ssize_t ta_if_invoke_debugfs_write(struct file *fp,
const char *buf, size
return -EFAULT;
copy_pos += sizeof(uint32_t);
- shared_buf = kzalloc(shared_buf_len, GFP_KERNEL);
- if (!shared_buf)
- return -ENOMEM;
- if (copy_from_user((void *)shared_buf, &buf[copy_pos], shared_buf_len))
{
- ret = -EFAULT;
- goto err_free_shared_buf;
- }
+ shared_buf = memdup_user(&buf[copy_pos], shared_buf_len);
+ if (IS_ERR(shared_buf))
+ return PTR_ERR(shared_buf);
set_ta_context_funcs(psp, ta_type, &context);
More complete than the one I sent in June^1.
Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@igalia.com>
I had some other in that series, not sure if you caught those.
Regards,
Tvrtko
1)
https://lore.kernel.org/amd-gfx/20250612104430.41169-1-tvrtko.ursu...@igalia.com/
