staging: rtl8192e: Prefer using macro DIV_ROUND_UP
The macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /(d)). It clarifies the divisor calculations. This was done using the coccinelle script: @@ expression e1; expression e2; @@ ( - ((e1) + e2 - 1) / (e2) + DIV_ROUND_UP(e1,e2) | - ((e1) + (e2 - 1)) / (e2) + DIV_ROUND_UP(e1,e2) ) Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -233,7 +233,7 @@ static int rtllib_ccmp_encrypt(struct sk_buff *skb, int hdr_len, void *priv)
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ccmp_init_blocks(key->tfm, hdr, key->tx_pn, data_len,
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b0, b, s0);
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blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
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blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
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last = data_len % AES_BLOCK_LEN;
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for (i = 1; i <= blocks; i++) {
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@ -319,7 +319,7 @@ static int rtllib_ccmp_decrypt(struct sk_buff *skb, int hdr_len, void *priv)
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ccmp_init_blocks(key->tfm, hdr, pn, data_len, b0, a, b);
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xor_block(mic, b, CCMP_MIC_LEN);
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blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
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blocks = DIV_ROUND_UP(data_len, AES_BLOCK_LEN);
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last = data_len % AES_BLOCK_LEN;
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for (i = 1; i <= blocks; i++) {
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