diff options
| author | Krzysztof Hałasa <khc@pm.waw.pl> | 2010-03-23 20:22:13 +0100 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2012-11-22 03:35:39 +0000 |
| commit | 553da857b1b917e27817b923ea2c786313620845 (patch) | |
| tree | 647c231f16889b7e96187ce75eb0e83ba6a49c14 /drivers/char/hw_random | |
| parent | 87ba5c6a313b4da5639a18d7796e51483ededd17 (diff) | |
| download | lwn-553da857b1b917e27817b923ea2c786313620845.tar.gz lwn-553da857b1b917e27817b923ea2c786313620845.zip | |
IXP4xx: HW pseudo-random generator is available on IXP45x/46x only.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Diffstat (limited to 'drivers/char/hw_random')
| -rw-r--r-- | drivers/char/hw_random/Kconfig | 6 | ||||
| -rw-r--r-- | 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 <dsaxena@plexity.net>"); -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"); |