diff options
| author | Paul Mackerras <paulus@samba.org> | 2008-01-31 11:25:51 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-01-31 11:25:51 +1100 |
| commit | bd45ac0c5daae35e7c71138172e63df5cf644cf6 (patch) | |
| tree | 5eb5a599bf6a9d7a8a34e802db932aa9e9555de4 /drivers/char/hw_random/geode-rng.c | |
| parent | 4eece4ccf997c0e6d8fdad3d842e37b16b8d705f (diff) | |
| parent | 5bdeae46be6dfe9efa44a548bd622af325f4bdb4 (diff) | |
| download | blackbird-op-linux-bd45ac0c5daae35e7c71138172e63df5cf644cf6.tar.gz blackbird-op-linux-bd45ac0c5daae35e7c71138172e63df5cf644cf6.zip | |
Merge branch 'linux-2.6'
Diffstat (limited to 'drivers/char/hw_random/geode-rng.c')
| -rw-r--r-- | drivers/char/hw_random/geode-rng.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/char/hw_random/geode-rng.c b/drivers/char/hw_random/geode-rng.c index 8e8658dcd2e3..fed4ef5569f5 100644 --- a/drivers/char/hw_random/geode-rng.c +++ b/drivers/char/hw_random/geode-rng.c @@ -28,6 +28,7 @@ #include <linux/kernel.h> #include <linux/pci.h> #include <linux/hw_random.h> +#include <linux/delay.h> #include <asm/io.h> @@ -61,11 +62,18 @@ static int geode_rng_data_read(struct hwrng *rng, u32 *data) return 4; } -static int geode_rng_data_present(struct hwrng *rng) +static int geode_rng_data_present(struct hwrng *rng, int wait) { void __iomem *mem = (void __iomem *)rng->priv; + int data, i; - return !!(readl(mem + GEODE_RNG_STATUS_REG)); + for (i = 0; i < 20; i++) { + data = !!(readl(mem + GEODE_RNG_STATUS_REG)); + if (data || !wait) + break; + udelay(10); + } + return data; } |
