[2.6.25 patch] drivers/crypto/hifn_795x.c: fix 64bit division

On Tue, Feb 26, 2008 at 01:21:00PM +0100, Martin Michlmayr wrote:

With 2.6.25-rc3 and a config file with

CONFIG_CRYPTO_DEV_HIFN_795X=m
CONFIG_CRYPTO_DEV_HIFN_795X_RNG=y

I get the following build error on at least ARM and MIPS:

  Building modules, stage 2.
  MODPOST 759 modules
ERROR: "__divdi3" [drivers/crypto/hifn_795x.ko] undefined!

Fix below.

Martin Michlmayr

cu
Adrian


<--  snip  -->


Using ndelay() with a 64bit variable as parameter can result in build 
errors like the following on some 32bit systems when it results in a 
64bit division:

<--  snip  -->

 ...
  MODPOST 759 modules
ERROR: "__divdi3" [drivers/crypto/hifn_795x.ko] undefined!

<--  snip  -->

Reported by Martin Michlmayr.

Signed-off-by: Adrian Bunk <bunk@kernel.org>

---

40b45041ddc587c20b872a86a6a36952c28b02c7 diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index 3110bf7..b1541c6 100644

--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c

@@ -807,7 +807,7 @@ static int hifn_rng_data_present(struct hwrng *rng, int wait)
 		return 1;
 	if (!wait)
 		return 0;
-	ndelay(nsec);
+	ndelay((u32)nsec);
 	return 1;
 }