diff options
author | Takashi Iwai <tiwai@suse.de> | 2017-05-02 08:25:25 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2017-05-02 08:25:25 +0200 |
commit | a5c3b32a1146e44f6b38fdfdfffc27842953420c (patch) | |
tree | eca93f51c8deabe77ed079a3e9190717b6380009 /drivers/char/hw_random/amd-rng.c | |
parent | d7dc450d5a7162de96edbed6b1792240c2f3a55f (diff) | |
parent | 20d5c84bef067b7e804a163e2abca16c47125bad (diff) |
Merge tag 'asoc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v4.12
A quiet release for the core, but lots of new drivers this time around:
- A new, generalized, API for hooking up jacks which makes it easier to
write generic machine drivers for simple cases.
- Continuing fixes for issues with the x86 CPU drivers.
- New drivers for Cirrus CS35L35, DIO DIO2125, Everest ES7132,
HiSilicon hi6210, Maxim MAX98927, MT2701 systems with WM8960, Nuvoton
NAU8824, Odroid systems, ST STM32 SAI controllers and x86 systems with
DA7213
Diffstat (limited to 'drivers/char/hw_random/amd-rng.c')
-rw-r--r-- | drivers/char/hw_random/amd-rng.c | 42 |
1 files changed, 34 insertions, 8 deletions
diff --git a/drivers/char/hw_random/amd-rng.c b/drivers/char/hw_random/amd-rng.c index 4a99ac756f08..9959c762da2f 100644 --- a/drivers/char/hw_random/amd-rng.c +++ b/drivers/char/hw_random/amd-rng.c @@ -55,6 +55,7 @@ MODULE_DEVICE_TABLE(pci, pci_tbl); struct amd768_priv { void __iomem *iobase; struct pci_dev *pcidev; + u32 pmbase; }; static int amd_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait) @@ -148,33 +149,58 @@ found: if (pmbase == 0) return -EIO; - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; - if (!devm_request_region(&pdev->dev, pmbase + PMBASE_OFFSET, - PMBASE_SIZE, DRV_NAME)) { + if (!request_region(pmbase + PMBASE_OFFSET, PMBASE_SIZE, DRV_NAME)) { dev_err(&pdev->dev, DRV_NAME " region 0x%x already in use!\n", pmbase + 0xF0); - return -EBUSY; + err = -EBUSY; + goto out; } - priv->iobase = devm_ioport_map(&pdev->dev, pmbase + PMBASE_OFFSET, - PMBASE_SIZE); + priv->iobase = ioport_map(pmbase + PMBASE_OFFSET, PMBASE_SIZE); if (!priv->iobase) { pr_err(DRV_NAME "Cannot map ioport\n"); - return -ENOMEM; + err = -EINVAL; + goto err_iomap; } amd_rng.priv = (unsigned long)priv; + priv->pmbase = pmbase; priv->pcidev = pdev; pr_info(DRV_NAME " detected\n"); - return devm_hwrng_register(&pdev->dev, &amd_rng); + err = hwrng_register(&amd_rng); + if (err) { + pr_err(DRV_NAME " registering failed (%d)\n", err); + goto err_hwrng; + } + return 0; + +err_hwrng: + ioport_unmap(priv->iobase); +err_iomap: + release_region(pmbase + PMBASE_OFFSET, PMBASE_SIZE); +out: + kfree(priv); + return err; } static void __exit mod_exit(void) { + struct amd768_priv *priv; + + priv = (struct amd768_priv *)amd_rng.priv; + + hwrng_unregister(&amd_rng); + + ioport_unmap(priv->iobase); + + release_region(priv->pmbase + PMBASE_OFFSET, PMBASE_SIZE); + + kfree(priv); } module_init(mod_init); |