[SCSI] qla2xxx: Correct MSI-X vector allocation for single queue mode.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 789fc576f222b305c7b5bd5a222986458ced33ae..e28ad81baf1e09d84edcbfef99e1ce945c2264b3 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1868,6 +1868,7 @@ qla24xx_disable_msix(struct qla_hw_data *ha)
 static int
 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
 {
+#define MIN_MSIX_COUNT 2
        int i, ret;
        struct msix_entry *entries;
        struct qla_msix_entry *qentry;
@@ -1883,12 +1884,16 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
 
        ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
        if (ret) {
+               if (ret < MIN_MSIX_COUNT)
+                       goto msix_failed;
+
                qla_printk(KERN_WARNING, ha,
                        "MSI-X: Failed to enable support -- %d/%d\n"
                        " Retry with %d vectors\n", ha->msix_count, ret, ret);
                ha->msix_count = ret;
                ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
                if (ret) {
+msix_failed:
                        qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
                                " support, giving up -- %d/%d\n",
                                ha->msix_count, ret);