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-rw-r--r--drivers/char/hw_random/Kconfig6
-rw-r--r--drivers/char/hw_random/ixp4xx-rng.c5
2 files changed, 7 insertions, 4 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index fbd9b2b850ef..c58ea9b80b1a 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -127,12 +127,12 @@ config HW_RANDOM_VIA
127 If unsure, say Y. 127 If unsure, say Y.
128 128
129config HW_RANDOM_IXP4XX 129config HW_RANDOM_IXP4XX
130 tristate "Intel IXP4xx NPU HW Random Number Generator support" 130 tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
131 depends on HW_RANDOM && ARCH_IXP4XX 131 depends on HW_RANDOM && ARCH_IXP4XX
132 default HW_RANDOM 132 default HW_RANDOM
133 ---help--- 133 ---help---
134 This driver provides kernel-side support for the Random 134 This driver provides kernel-side support for the Pseudo-Random
135 Number Generator hardware found on the Intel IXP4xx NPU. 135 Number Generator hardware found on the Intel IXP45x/46x NPU.
136 136
137 To compile this driver as a module, choose M here: the 137 To compile this driver as a module, choose M here: the
138 module will be called ixp4xx-rng. 138 module will be called ixp4xx-rng.
diff --git a/drivers/char/hw_random/ixp4xx-rng.c b/drivers/char/hw_random/ixp4xx-rng.c
index 263567f5f392..beec1627db3c 100644
--- a/drivers/char/hw_random/ixp4xx-rng.c
+++ b/drivers/char/hw_random/ixp4xx-rng.c
@@ -45,6 +45,9 @@ static int __init ixp4xx_rng_init(void)
45 void __iomem * rng_base; 45 void __iomem * rng_base;
46 int err; 46 int err;
47 47
48 if (!cpu_is_ixp46x()) /* includes IXP455 */
49 return -ENOSYS;
50
48 rng_base = ioremap(0x70002100, 4); 51 rng_base = ioremap(0x70002100, 4);
49 if (!rng_base) 52 if (!rng_base)
50 return -ENOMEM; 53 return -ENOMEM;
@@ -68,5 +71,5 @@ module_init(ixp4xx_rng_init);
68module_exit(ixp4xx_rng_exit); 71module_exit(ixp4xx_rng_exit);
69 72
70MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>"); 73MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
71MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for IXP4xx"); 74MODULE_DESCRIPTION("H/W Pseudo-Random Number Generator (RNG) driver for IXP45x/46x");
72MODULE_LICENSE("GPL"); 75MODULE_LICENSE("GPL");