diff options
Diffstat (limited to 'drivers/char/hw_random')
| -rw-r--r-- | drivers/char/hw_random/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/char/hw_random/amd-rng.c | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig index beecd1cf9b9..a60043b3e40 100644 --- a/drivers/char/hw_random/Kconfig +++ b/drivers/char/hw_random/Kconfig @@ -49,7 +49,7 @@ config HW_RANDOM_INTEL config HW_RANDOM_AMD tristate "AMD HW Random Number Generator support" - depends on HW_RANDOM && X86 && PCI + depends on HW_RANDOM && (X86 || PPC_MAPLE) && PCI default HW_RANDOM ---help--- This driver provides kernel-side support for the Random Number diff --git a/drivers/char/hw_random/amd-rng.c b/drivers/char/hw_random/amd-rng.c index 0d8c5788b8e..c6af038682f 100644 --- a/drivers/char/hw_random/amd-rng.c +++ b/drivers/char/hw_random/amd-rng.c @@ -133,6 +133,12 @@ found: pmbase &= 0x0000FF00; if (pmbase == 0) goto out; + if (!request_region(pmbase + 0xF0, 8, "AMD HWRNG")) { + dev_err(&pdev->dev, "AMD HWRNG region 0x%x already in use!\n", + pmbase + 0xF0); + err = -EBUSY; + goto out; + } amd_rng.priv = (unsigned long)pmbase; amd_pdev = pdev; @@ -141,6 +147,7 @@ found: if (err) { printk(KERN_ERR PFX "RNG registering failed (%d)\n", err); + release_region(pmbase + 0xF0, 8); goto out; } out: @@ -149,6 +156,8 @@ out: static void __exit mod_exit(void) { + u32 pmbase = (unsigned long)amd_rng.priv; + release_region(pmbase + 0xF0, 8); hwrng_unregister(&amd_rng); } |