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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
| commit | aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch) | |
| tree | 3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /drivers/char/hw_random/amd-rng.c | |
| parent | cca8edfd2ec2a34d9f50f593bc753bb11e1bc1f5 (diff) | |
| parent | 3c6b50141ef9f0a8844bf1357b80c0cdf518bf05 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'drivers/char/hw_random/amd-rng.c')
| -rw-r--r-- | drivers/char/hw_random/amd-rng.c | 9 |
1 files changed, 9 insertions, 0 deletions
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); } |