This is a note to let you know that I've just added the patch titled
crypto: hisilicon/qm - add missing pci_dev_put() in q_num_set()
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-hisilicon-qm-add-missing-pci_dev_put-in-q_num.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit fff290a60ec33774c34a739993394de294e54cc5
Author: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
Date: Fri Nov 11 18:00:36 2022 +0800
crypto: hisilicon/qm - add missing pci_dev_put() in q_num_set()
[ Upstream commit cc7710d0d4ebc6998f04035cde4f32c5ddbe9d7f ]
pci_get_device() will increase the reference count for the returned
pci_dev. We need to use pci_dev_put() to decrease the reference count
before q_num_set() returns.
Fixes: c8b4b477079d ("crypto: hisilicon - add HiSilicon HPRE accelerator")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@xxxxxxxxxx>
Reviewed-by: Weili Qian <qianweili@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/crypto/hisilicon/qm.h b/drivers/crypto/hisilicon/qm.h
index 0420f4ce7197..aaad3d76dc04 100644
--- a/drivers/crypto/hisilicon/qm.h
+++ b/drivers/crypto/hisilicon/qm.h
@@ -289,14 +289,14 @@ struct hisi_qp {
static inline int q_num_set(const char *val, const struct kernel_param *kp,
unsigned int device)
{
- struct pci_dev *pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI,
- device, NULL);
+ struct pci_dev *pdev;
u32 n, q_num;
int ret;
if (!val)
return -EINVAL;
+ pdev = pci_get_device(PCI_VENDOR_ID_HUAWEI, device, NULL);
if (!pdev) {
q_num = min_t(u32, QM_QNUM_V1, QM_QNUM_V2);
pr_info("No device found currently, suppose queue number is %d\n",
@@ -306,6 +306,8 @@ static inline int q_num_set(const char *val, const struct kernel_param *kp,
q_num = QM_QNUM_V1;
else
q_num = QM_QNUM_V2;
+
+ pci_dev_put(pdev);
}
ret = kstrtou32(val, 10, &n);
