On 01/04/2025 14:05, Wentao Liang wrote:

In efx_devlink_info_board_cfg(), the return value of devlink_info_serial_number_put() needs to be checked. This could result in silent failures if the function failed.

Add error checking for efx_devlink_info_board_cfg() and propagate any errors immediately to ensure proper error handling and prevents silent failures.

Looking at the rest of the file, all the calls to devlink_info_*_put() in this driver ignore the return value, not just this one. I think this may have been an intentional decision to only report errors in getting the info from FW, which seems reasonable to me. If not, then all the calls need fixing, not just this one. CCing Alejandro, original author of this code, for his opinion.

-ed

Fixes: 14743ddd2495 ("sfc: add devlink info support for ef100") Cc: stable@vger.kernel.org # v6.3+ Signed-off-by: Wentao Liang vulab@iscas.ac.cn

---

drivers/net/ethernet/sfc/efx_devlink.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sfc/efx_devlink.c b/drivers/net/ethernet/sfc/efx_devlink.c index 3cd750820fdd..17279bbd81d5 100644 --- a/drivers/net/ethernet/sfc/efx_devlink.c +++ b/drivers/net/ethernet/sfc/efx_devlink.c @@ -581,12 +581,14 @@ static int efx_devlink_info_board_cfg(struct efx_nic *efx, { char sn[EFX_MAX_SERIALNUM_LEN]; u8 mac_address[ETH_ALEN];

• int rc;

• int rc, err;

rc = efx_mcdi_get_board_cfg(efx, (u8 *)mac_address, NULL, NULL); if (!rc) { snprintf(sn, EFX_MAX_SERIALNUM_LEN, "%pm", mac_address);

• devlink_info_serial_number_put(req, sn);
  

• err = devlink_info_serial_number_put(req, sn);
  

• if (err)
  

• 	return err;
  

  } return rc;

}