UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

hwrng: amd - manage resource allocation 

As amd driver doesn't bind to PCI device, we'd better manage reource
allocation on our own to disallow (possible) conflicts.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dmitry Eremin-Solenikov 2011-04-27 23:21:15 +04:00 committed by Herbert Xu
parent 0200f3ecc1
commit bd68ccb390
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/char/hw_random/amd-rng.c
View File

@ -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);
}