diff options
| author | Markus Elfring <elfring@users.sourceforge.net> | 2018-03-05 13:50:13 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-03-16 16:33:29 +0100 |
| commit | 6c51ddddac46ab124a3f10fd17cf34979670c1ce (patch) | |
| tree | a5fc13cdbc5f27a49eafab015647cd1802797254 /drivers/crypto | |
| parent | crypto: ccp - Fill the result buffer only on digest, finup, and final ops (diff) | |
| download | linux-6c51ddddac46ab124a3f10fd17cf34979670c1ce.tar.xz linux-6c51ddddac46ab124a3f10fd17cf34979670c1ce.zip | |
crypto: ccp - Use memdup_user() rather than duplicating its implementation
Reuse existing functionality from memdup_user() instead of keeping
duplicate source code.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Acked-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/ccp/psp-dev.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c index b3afb6cc9d72..d95ec526587a 100644 --- a/drivers/crypto/ccp/psp-dev.c +++ b/drivers/crypto/ccp/psp-dev.c @@ -367,8 +367,6 @@ e_free: void *psp_copy_user_blob(u64 __user uaddr, u32 len) { - void *data; - if (!uaddr || !len) return ERR_PTR(-EINVAL); @@ -376,18 +374,7 @@ void *psp_copy_user_blob(u64 __user uaddr, u32 len) if (len > SEV_FW_BLOB_MAX_SIZE) return ERR_PTR(-EINVAL); - data = kmalloc(len, GFP_KERNEL); - if (!data) - return ERR_PTR(-ENOMEM); - - if (copy_from_user(data, (void __user *)(uintptr_t)uaddr, len)) - goto e_free; - - return data; - -e_free: - kfree(data); - return ERR_PTR(-EFAULT); + return memdup_user((void __user *)(uintptr_t)uaddr, len); } EXPORT_SYMBOL_GPL(psp_copy_user_blob); |