From: Shai Malin <smalin@xxxxxxxxxxx>
[ Upstream commit b0cd08537db8d2fbb227cdb2e5835209db295a24 ]
For VFs we should return with an error in case we didn't get the exact
number of msix vectors as we requested.
Not doing that will lead to a crash when starting queues for this VF.
Signed-off-by: Prabhakar Kushwaha <pkushwaha@xxxxxxxxxxx>
Signed-off-by: Ariel Elior <aelior@xxxxxxxxxxx>
Signed-off-by: Shai Malin <smalin@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/qlogic/qed/qed_main.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 049a83b40e46..9d77f318d11e 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -439,7 +439,12 @@ static int qed_enable_msix(struct qed_dev *cdev,
rc = cnt;
}
- if (rc > 0) {
+ /* For VFs, we should return with an error in case we didn't get the
+ * exact number of msix vectors as we requested.
+ * Not doing that will lead to a crash when starting queues for
+ * this VF.
+ */
+ if ((IS_PF(cdev) && rc > 0) || (IS_VF(cdev) && rc == cnt)) {
/* MSI-x configuration was achieved */
int_params->out.int_mode = QED_INT_MODE_MSIX;
int_params->out.num_vectors = rc;
--
2.30.2
