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qed: Fix the VF msix vectors flow 

[ 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@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shai Malin 2021-08-22 22:21:14 +03:00 committed by Greg Kroah-Hartman
parent 92abb09f7a
commit 50f73f31ae
1 changed files with 6 additions and 1 deletions
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7
drivers/net/ethernet/qlogic/qed/qed_main.c
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@ -559,7 +559,12 @@ 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;