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drm/imagination: Use memdup_user() helper to simplify code

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Switching to memdup_user(), which combines kmalloc() and copy_from_user(),
and it can simplfy code.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240831102930.97502-1-ruanjinjie@huawei.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
This commit is contained in:
Jinjie Ruan 2024-08-31 18:29:30 +08:00 committed by Matt Coster
parent eb4accc523
commit 3742c20958
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GPG Key ID: 79BC19F3D9DE6AB0
1 changed files with 3 additions and 10 deletions
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13
drivers/gpu/drm/imagination/pvr_job.c
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@ -90,20 +90,13 @@ static int pvr_fw_cmd_init(struct pvr_device *pvr_dev, struct pvr_job *job,
void *stream;
int err;
stream = kzalloc(stream_len, GFP_KERNEL);
if (!stream)
return -ENOMEM;
if (copy_from_user(stream, u64_to_user_ptr(stream_userptr), stream_len)) {
err = -EFAULT;
goto err_free_stream;
}
stream = memdup_user(u64_to_user_ptr(stream_userptr), stream_len);
if (IS_ERR(stream))
return PTR_ERR(stream);
err = pvr_job_process_stream(pvr_dev, stream_def, stream, stream_len, job);
err_free_stream:
kfree(stream);
return err;
}