ixp4xx_crypto: simplyfy the code a bit.

[Krzysztof Halasa]

Signed-off-by: Krzysztof Hałasa <k...@pm.waw.pl>

diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 2ae7148..a28df93 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -104,7 +104,7 @@ struct buffer_desc {
        u16 buf_len;
 #endif
        u32 phys_addr;
-       u32 __reserved[4];
+       u32 __reserved[5];
        struct buffer_desc *next;
        enum dma_data_direction dir;
 };
@@ -120,7 +120,7 @@ struct crypt_ctl {
        u8 mode;                /* NPE_OP_*  operation mode */
 #endif
        u8 iv[MAX_IVLEN];       /* IV for CBC mode or CTR IV for CTR mode */
-       u32 icv_rev_aes;        /* icv or rev aes */
+       u32 icv_rev_aes;        /* address to store icv or rev aes */
        u32 src_buf;
        u32 dst_buf;
 #ifdef __ARMEB__
@@ -429,8 +429,8 @@ static int init_ixp_crypto(void)
        int ret = -ENODEV;
        u32 msg[2] = { 0, 0 };
 
-       if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH |
-                               IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) {
+       if (!(ixp4xx_read_feature_bits() &
+             (IXP4XX_FEATURE_HASH | IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) 
{
                printk(KERN_ERR "ixp_crypto: No HW crypto available\n");
                return ret;
        }
@@ -442,15 +442,11 @@ static int init_ixp_crypto(void)
                ret = npe_load_firmware(npe_c, npe_name(npe_c), dev);
                if (ret)
                        return ret;
-               if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
-                       goto npe_error;
-       } else {
-               if (npe_send_message(npe_c, msg, "STATUS_MSG"))
-                       goto npe_error;
+       } else if (npe_send_message(npe_c, msg, "STATUS_MSG"))
+               goto npe_error;
 
-               if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
-                       goto npe_error;
-       }
+       if (npe_recv_message(npe_c, msg, "STATUS_MSG"))
+               goto npe_error;
 
        switch ((msg[1]>>16) & 0xff) {
        case 3:
@@ -1120,7 +1116,7 @@ static int aead_setauthsize(struct crypto_aead *tfm, 
unsigned int authsize)
 {
        int max = crypto_aead_alg(tfm)->maxauthsize >> 2;
 
-       if ((authsize>>2) < 1 || (authsize>>2) > max || (authsize & 3))
+       if ((authsize >> 2) < 1 || (authsize >> 2) > max || (authsize & 3))
                return -EINVAL;
        return aead_setup(tfm, authsize);
 }
--
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