diff options
| author | Eric Biggers <ebiggers@kernel.org> | 2025-08-21 13:56:13 -0400 |
|---|---|---|
| committer | Chen-Yu Tsai <wenst@chromium.org> | 2025-09-04 11:27:45 +0800 |
| commit | e339a73737d365dc88e1994d561112ef2c21ad88 (patch) | |
| tree | 2b4cef11a28a9c60d1315b470f940ea40cee69ad | |
| parent | a3ae3384be7704fcf41279f13190bd8a11204bea (diff) | |
drm/bridge: it6505: Use SHA-1 library instead of crypto_shash
Instead of using the "sha1" crypto_shash, simply call the sha1() library
function. This is simpler and faster.
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20250821175613.14717-1-ebiggers@kernel.org
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/bridge/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/ite-it6505.c | 33 |
2 files changed, 3 insertions, 33 deletions
diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig index 6945029b3592..a250afd8d662 100644 --- a/drivers/gpu/drm/bridge/Kconfig +++ b/drivers/gpu/drm/bridge/Kconfig @@ -120,8 +120,7 @@ config DRM_ITE_IT6505 select DRM_DISPLAY_DP_AUX_BUS select DRM_KMS_HELPER select EXTCON - select CRYPTO - select CRYPTO_HASH + select CRYPTO_LIB_SHA1 select REGMAP_I2C help ITE IT6505 DisplayPort bridge chip driver. diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c index 89649c17ffad..a094803ba7aa 100644 --- a/drivers/gpu/drm/bridge/ite-it6505.c +++ b/drivers/gpu/drm/bridge/ite-it6505.c @@ -21,7 +21,7 @@ #include <linux/wait.h> #include <linux/bitfield.h> -#include <crypto/hash.h> +#include <crypto/sha1.h> #include <drm/display/drm_dp_helper.h> #include <drm/display/drm_hdcp_helper.h> @@ -2107,35 +2107,6 @@ static void it6505_hdcp_part1_auth(struct it6505 *it6505) it6505->hdcp_status = HDCP_AUTH_GOING; } -static int it6505_sha1_digest(struct it6505 *it6505, u8 *sha1_input, - unsigned int size, u8 *output_av) -{ - struct shash_desc *desc; - struct crypto_shash *tfm; - int err; - struct device *dev = it6505->dev; - - tfm = crypto_alloc_shash("sha1", 0, 0); - if (IS_ERR(tfm)) { - dev_err(dev, "crypto_alloc_shash sha1 failed"); - return PTR_ERR(tfm); - } - desc = kzalloc(sizeof(*desc) + crypto_shash_descsize(tfm), GFP_KERNEL); - if (!desc) { - crypto_free_shash(tfm); - return -ENOMEM; - } - - desc->tfm = tfm; - err = crypto_shash_digest(desc, sha1_input, size, output_av); - if (err) - dev_err(dev, "crypto_shash_digest sha1 failed"); - - crypto_free_shash(tfm); - kfree(desc); - return err; -} - static int it6505_setup_sha1_input(struct it6505 *it6505, u8 *sha1_input) { struct device *dev = it6505->dev; @@ -2205,7 +2176,7 @@ static bool it6505_hdcp_part2_ksvlist_check(struct it6505 *it6505) return false; } - it6505_sha1_digest(it6505, it6505->sha1_input, i, (u8 *)av); + sha1(it6505->sha1_input, i, (u8 *)av); /*1B-05 V' must retry 3 times */ for (retry = 0; retry < 3; retry++) { err = it6505_get_dpcd(it6505, DP_AUX_HDCP_V_PRIME(0), (u8 *)bv, |