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crypto: tegra-aes - bitwise vs logical and 

The bug here is that:

	while (eng_busy & (!icq_empty) & dma_busy)

is never true because it's using bitwise instead of logical ANDs.  The
other bitwise AND conditions work as intended but I changed them as well
for consistency.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dan Carpenter 2013-08-20 11:54:48 +03:00 committed by Herbert Xu
parent 393e661d61
commit 5bc3570374
1 changed files with 3 additions and 3 deletions
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6
drivers/crypto/tegra-aes.c
View File

@ -275,7 +275,7 @@ static int aes_start_crypt(struct tegra_aes_dev *dd, u32 in_addr, u32 out_addr,
value = aes_readl(dd, TEGRA_AES_INTR_STATUS);
eng_busy = value & TEGRA_AES_ENGINE_BUSY_FIELD;
icq_empty = value & TEGRA_AES_ICQ_EMPTY_FIELD;
} while (eng_busy & (!icq_empty));
} while (eng_busy && !icq_empty);
aes_writel(dd, cmdq[i], TEGRA_AES_ICMDQUE_WR);
}
@ -365,7 +365,7 @@ static int aes_set_key(struct tegra_aes_dev *dd)
eng_busy = value & TEGRA_AES_ENGINE_BUSY_FIELD;
icq_empty = value & TEGRA_AES_ICQ_EMPTY_FIELD;
dma_busy = value & TEGRA_AES_DMA_BUSY_FIELD;
} while (eng_busy & (!icq_empty) & dma_busy);
} while (eng_busy && !icq_empty && dma_busy);
/* settable command to get key into internal registers */
value = CMD_SETTABLE << CMDQ_OPCODE_SHIFT |
@ -379,7 +379,7 @@ static int aes_set_key(struct tegra_aes_dev *dd)
value = aes_readl(dd, TEGRA_AES_INTR_STATUS);
eng_busy = value & TEGRA_AES_ENGINE_BUSY_FIELD;
icq_empty = value & TEGRA_AES_ICQ_EMPTY_FIELD;
} while (eng_busy & (!icq_empty));
} while (eng_busy && !icq_empty);
return 0;
}