From 553da857b1b917e27817b923ea2c786313620845 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Krzysztof=20Ha=C5=82asa?= Date: Tue, 23 Mar 2010 20:22:13 +0100 Subject: [PATCH] IXP4xx: HW pseudo-random generator is available on IXP45x/46x only. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Krzysztof Hałasa --- drivers/char/hw_random/Kconfig | 6 +++--- drivers/char/hw_random/ixp4xx-rng.c | 5 ++++- 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 If unsure, say Y. config HW_RANDOM_IXP4XX - tristate "Intel IXP4xx NPU HW Random Number Generator support" + tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support" depends on HW_RANDOM && ARCH_IXP4XX default HW_RANDOM ---help--- - This driver provides kernel-side support for the Random - Number Generator hardware found on the Intel IXP4xx NPU. + This driver provides kernel-side support for the Pseudo-Random + Number Generator hardware found on the Intel IXP45x/46x NPU. To compile this driver as a module, choose M here: the 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) void __iomem * rng_base; int err; + if (!cpu_is_ixp46x()) /* includes IXP455 */ + return -ENOSYS; + rng_base = ioremap(0x70002100, 4); if (!rng_base) return -ENOMEM; @@ -68,5 +71,5 @@ module_init(ixp4xx_rng_init); module_exit(ixp4xx_rng_exit); MODULE_AUTHOR("Deepak Saxena "); -MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for IXP4xx"); +MODULE_DESCRIPTION("H/W Pseudo-Random Number Generator (RNG) driver for IXP45x/46x"); MODULE_LICENSE("GPL");