pci_set_mwi() has 'warn_unused_result' so the result should be checked. Fixes the following W=1 kernel build warning(s): drivers/scsi/qla4xxx/ql4_init.c: In function ‘qla4xxx_pci_config’: drivers/scsi/qla4xxx/ql4_init.c:664:6: warning: variable ‘status’ set but not used [-Wunused-but-set-variable] And if 'status' is removed: drivers/scsi/qla4xxx/ql4_init.c: In function ‘qla4xxx_pci_config’: drivers/scsi/qla4xxx/ql4_init.c:666:2: warning: ignoring return value of ‘pci_set_mwi’, declared with attribute warn_unused_result [-Wunused-result] 666 | pci_set_mwi(ha->pdev); | ^~~~~~~~~~~~~~~~~~~~~ Cc: QLogic-Storage-Upstream@xxxxxxxxxx Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> --- drivers/scsi/qla4xxx/ql4_init.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c index 82f6e7f3969ec..4afd43610f68f 100644 --- a/drivers/scsi/qla4xxx/ql4_init.c +++ b/drivers/scsi/qla4xxx/ql4_init.c @@ -665,6 +665,9 @@ void qla4xxx_pci_config(struct scsi_qla_host *ha) pci_set_master(ha->pdev); status = pci_set_mwi(ha->pdev); + if (status) + ql4_printk(KERN_WARNING, ha, "Failed to set MWI\n"); + /* * We want to respect framework's setting of PCI configuration space * command register and also want to make sure that all bits of -- 2.25.1
