[SCSI] qla4xxx: Fail probe_adapter if IRQ allocation fails

If IRQ allocation fails, it means system has run out of interrupt
vectors, so fail probe_adapter in case of IRQ allocation failure
and dont retry adapter initialization.

Signed-off-by: Poornima Vonti <poornima.vonti@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 81b3038..29bd225 100644 (file)
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -5240,6 +5240,11 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
         * NOTE: interrupts enabled upon successful completion
         */
        status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
+
+       /* Dont retry adapter initialization if IRQ allocation failed */
+       if (!test_bit(AF_IRQ_ATTACHED, &ha->flags))
+               goto skip_retry_init;
+
        while ((!test_bit(AF_ONLINE, &ha->flags)) &&
            init_retry_count++ < MAX_INIT_RETRIES) {
 
@@ -5264,6 +5269,7 @@ static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
                status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
        }
 
+skip_retry_init:
        if (!test_bit(AF_ONLINE, &ha->flags)) {
                ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");