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| author | Xiongfeng Wang <wangxiongfeng2@huawei.com> | 2022-11-22 12:40:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-20 13:05:39 +0100 |
| commit | ce4273d89c52167d6fe20572136c58117eae0657 (patch) | |
| tree | 4eae7d673adda1f2a1e8c9aa568968bc9d7bf616 | |
| parent | crypto: hisilicon/qm - define the device isolation strategy (diff) | |
| download | linux-ce4273d89c52167d6fe20572136c58117eae0657.tar.xz linux-ce4273d89c52167d6fe20572136c58117eae0657.zip | |
applicom: Fix PCI device refcount leak in applicom_init()
As comment of pci_get_class() says, it returns a pci_device with its
refcount increased and decreased the refcount for the input parameter
@from if it is not NULL.
If we break the loop in applicom_init() with 'dev' not NULL, we need to
call pci_dev_put() to decrease the refcount. Add the missing
pci_dev_put() to avoid refcount leak.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Link: https://lore.kernel.org/r/20221122114035.24194-1-wangxiongfeng2@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/char/applicom.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c index 36203d3fa6ea..69314532f38c 100644 --- a/drivers/char/applicom.c +++ b/drivers/char/applicom.c @@ -197,8 +197,10 @@ static int __init applicom_init(void) if (!pci_match_id(applicom_pci_tbl, dev)) continue; - if (pci_enable_device(dev)) + if (pci_enable_device(dev)) { + pci_dev_put(dev); return -EIO; + } RamIO = ioremap(pci_resource_start(dev, 0), LEN_RAM_IO); @@ -207,6 +209,7 @@ static int __init applicom_init(void) "space at 0x%llx\n", (unsigned long long)pci_resource_start(dev, 0)); pci_disable_device(dev); + pci_dev_put(dev); return -EIO; } |