crypto: Make hifn_795x build depend on !ARCH_DMA_ADDR_T_64BIT

hifn_795x works only on 32 bit, remove the detection while loading
the module and catch non-32 bit systems at build time.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 4ac6d4d..6d16b4b 100644 (file)
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -200,6 +200,7 @@ config CRYPTO_DEV_HIFN_795X
        select CRYPTO_BLKCIPHER
        select HW_RANDOM if CRYPTO_DEV_HIFN_795X_RNG
        depends on PCI
+       depends on !ARCH_DMA_ADDR_T_64BIT
        help
          This option allows you to have support for HIFN 795x crypto adapters.
 

diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index a84250a..fe765f4 100644 (file)
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -2744,10 +2744,8 @@ static int __init hifn_init(void)
        unsigned int freq;
        int err;
 
-       if (sizeof(dma_addr_t) > 4) {
-               printk(KERN_INFO "HIFN supports only 32-bit addresses.\n");
-               return -EINVAL;
-       }
+       /* HIFN supports only 32-bit addresses */
+       BUILD_BUG_ON(sizeof(dma_addr_t) != 4);
 
        if (strncmp(hifn_pll_ref, "ext", 3) &&
            strncmp(hifn_pll_ref, "pci", 3)) {