Showing error 847

User: Jiri Slaby
Error type: Resource Leak
Error type description: The code omits to put the resource to the system for reuse
File location: drivers/char/hw_random/intel-rng.c
Line in file: 336
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2011-11-07 22:40:13 UTC

Source: 

306            == BIOS_CNTL_LOCK_ENABLE_MASK) {
307                static __initdata /*const*/ char warning[] =
308                        KERN_WARNING PFX "Firmware space is locked read-only. If you can't or\n"
309                        KERN_WARNING PFX "don't want to disable this in firmware setup, and if\n"
310                        KERN_WARNING PFX "you are certain that your system has a functional\n"
311                        KERN_WARNING PFX "RNG, try using the 'no_fwh_detect' option.\n";
312
313                if (no_fwh_detect)
314                        return -ENODEV;
315                printk(warning);
316                return -EBUSY;
317        }
318
319        intel_rng_hw->mem = ioremap_nocache(INTEL_FWH_ADDR, INTEL_FWH_ADDR_LEN);
320        if (intel_rng_hw->mem == NULL)
321                return -EBUSY;
322
323        return 0;
324}
325
326
327static int __init mod_init(void)
328{
329        int err = -ENODEV;
330        int i;
331        struct pci_dev *dev = NULL;
332        void __iomem *mem = mem;
333        u8 hw_status;
334        struct intel_rng_hw *intel_rng_hw;
335
336        for (i = 0; !dev && pci_tbl[i].vendor; ++i)
337                dev = pci_get_device(pci_tbl[i].vendor, pci_tbl[i].device,
338                                     NULL);
339
340        if (!dev)
341                goto out; /* Device not found. */
342
343        if (no_fwh_detect < 0) {
344                pci_dev_put(dev);
345                goto fwh_done;
346        }
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