diff options
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/qcom_scm.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 7be48c1bec96..f57779fc7ee9 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -965,8 +965,11 @@ EXPORT_SYMBOL(qcom_scm_ice_available); * qcom_scm_ice_invalidate_key() - Invalidate an inline encryption key * @index: the keyslot to invalidate * - * The UFSHCI standard defines a standard way to do this, but it doesn't work on - * these SoCs; only this SCM call does. + * The UFSHCI and eMMC standards define a standard way to do this, but it + * doesn't work on these SoCs; only this SCM call does. + * + * It is assumed that the SoC has only one ICE instance being used, as this SCM + * call doesn't specify which ICE instance the keyslot belongs to. * * Return: 0 on success; -errno on failure. */ @@ -995,10 +998,13 @@ EXPORT_SYMBOL(qcom_scm_ice_invalidate_key); * units, e.g. 1 = 512 bytes, 8 = 4096 bytes, etc. * * Program a key into a keyslot of Qualcomm ICE (Inline Crypto Engine), where it - * can then be used to encrypt/decrypt UFS I/O requests inline. + * can then be used to encrypt/decrypt UFS or eMMC I/O requests inline. + * + * The UFSHCI and eMMC standards define a standard way to do this, but it + * doesn't work on these SoCs; only this SCM call does. * - * The UFSHCI standard defines a standard way to do this, but it doesn't work on - * these SoCs; only this SCM call does. + * It is assumed that the SoC has only one ICE instance being used, as this SCM + * call doesn't specify which ICE instance the keyslot belongs to. * * Return: 0 on success; -errno on failure. */ |