hwrng: amd - Fix PCI device refcount leak

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[ Upstream commit ecadb5b011 ]

for_each_pci_dev() is implemented by pci_get_device(). The comment of
pci_get_device() says that it will increase the reference count for the
returned pci_dev and also decrease the reference count for the input
pci_dev @from if it is not NULL.

If we break for_each_pci_dev() loop with pdev not NULL, we need to call
pci_dev_put() to decrease the reference count. Add the missing
pci_dev_put() for the normal and error path.

Fixes: 96d63c0297 ("[PATCH] Add AMD HW RNG driver")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Xiongfeng Wang 2022-12-02 21:22:33 +08:00 • committed by Greg Kroah-Hartman

parent 84ebdb6b65

commit 2e10ecd012

1 changed files with 13 additions and 5 deletions

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18

drivers/char/hw_random/amd-rng.c

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