[PATCH 6.7 054/641] crypto: qat - add NULL pointer check

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6.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>

[ Upstream commit a643212c9f28d09225c3792c316bc4aaf6be4a68 ]

There is a possibility that the function adf_devmgr_pci_to_accel_dev()
might return a NULL pointer.
Add a NULL pointer check in the function rp2srv_show().

Fixes: dbc8876dd873 ("crypto: qat - add rp2svc sysfs attribute")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Reviewed-by: Ahsan Atta <ahsan.atta@xxxxxxxxx>
Reviewed-by: David Guckian <david.guckian@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/crypto/intel/qat/qat_common/adf_sysfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/intel/qat/qat_common/adf_sysfs.c b/drivers/crypto/intel/qat/qat_common/adf_sysfs.c
index 6f0b3629da13..d450dad32c9e 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_sysfs.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_sysfs.c
@@ -215,6 +215,9 @@ static ssize_t rp2srv_show(struct device *dev, struct device_attribute *attr,
 	enum adf_cfg_service_type svc;
 
 	accel_dev = adf_devmgr_pci_to_accel_dev(to_pci_dev(dev));
+	if (!accel_dev)
+		return -EINVAL;
+
 	hw_data = GET_HW_DATA(accel_dev);
 
 	if (accel_dev->sysfs.ring_num == UNSET_RING_NUM)
-- 
2.43.0







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