[PATCH 4.14 02/23] qed: return status of qed_iov_get_link

Greg Kroah-Hartman
2022-03-14T11:38:04Z

From: Tom Rix <trix@redhat.com>

[ Upstream commit d9dc0c84ad2d4cc911ba252c973d1bf18d5eb9cf ]

Clang static analysis reports this issue
qed_sriov.c:4727:19: warning: Assigned value is
garbage or undefined
ivi->max_tx_rate = tx_rate ? tx_rate : link.speed;
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

link is only sometimes set by the call to qed_iov_get_link()
qed_iov_get_link fails without setting link or returning
status. So change the decl to return status.

Fixes: 73390ac9d82b ("qed*: support ndo_get_vf_config")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/qlogic/qed/qed_sriov.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_sriov.c b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
index bc9eec1bcbf1..5e7e977c62b6 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_sriov.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_sriov.c
@@ -3782,11 +3782,11 @@ bool qed_iov_mark_vf_flr(struct qed_hwfn *p_hwfn, u32 *p_disabled_vfs)
return found;
}

-static void qed_iov_get_link(struct qed_hwfn *p_hwfn,
- u16 vfid,
- struct qed_mcp_link_params *p_params,
- struct qed_mcp_link_state *p_link,
- struct qed_mcp_link_capabilities *p_caps)
+static int qed_iov_get_link(struct qed_hwfn *p_hwfn,
+ u16 vfid,
+ struct qed_mcp_link_params *p_params,
+ struct qed_mcp_link_state *p_link,
+ struct qed_mcp_link_capabilities *p_caps)
{
struct qed_vf_info *p_vf = qed_iov_get_vf_info(p_hwfn,
vfid,
@@ -3794,7 +3794,7 @@ static void qed_iov_get_link(struct qed_hwfn *p_hwfn,
struct qed_bulletin_content *p_bulletin;

if (!p_vf)
- return;
+ return -EINVAL;

p_bulletin = p_vf->bulletin.p_virt;

@@ -3804,6 +3804,7 @@ static void qed_iov_get_link(struct qed_hwfn *p_hwfn,
__qed_vf_get_link_state(p_hwfn, p_link, p_bulletin);
if (p_caps)
__qed_vf_get_link_caps(p_hwfn, p_caps, p_bulletin);
+ return 0;
}

static void qed_iov_process_mbx_req(struct qed_hwfn *p_hwfn,
@@ -4554,6 +4555,7 @@ static int qed_get_vf_config(struct qed_dev *cdev,
struct qed_public_vf_info *vf_info;
struct qed_mcp_link_state link;
u32 tx_rate;
+ int ret;

/* Sanitize request */
if (IS_VF(cdev))
@@ -4567,7 +4569,9 @@ static int qed_get_vf_config(struct qed_dev *cdev,

vf_info = qed_iov_get_public_vf_info(hwfn, vf_id, true);

- qed_iov_get_link(hwfn, vf_id, NULL, &link, NULL);
+ ret = qed_iov_get_link(hwfn, vf_id, NULL, &link, NULL);
+ if (ret)
+ return ret;

/* Fill information about VF */
ivi->vf = vf_id;
--
2.34.1