1 files changed, 36 insertions, 8 deletions

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index b345cc476940..cfd30adc3f18 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -173,6 +173,10 @@ static int __devinit hpsa_find_cfg_addrs(struct pci_dev *pdev,
 static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
         unsigned long *memory_bar);
 static int __devinit hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
+static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev,
+        void __iomem *vaddr, int wait_for_ready);
+#define BOARD_NOT_READY 0
+#define BOARD_READY 1
 
 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
@@ -3237,6 +3241,20 @@ static __devinit int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev)
            need a little pause here */
         msleep(HPSA_POST_RESET_PAUSE_MSECS);
 
+        /* Wait for board to become not ready, then ready. */
+        dev_info(&pdev->dev, "Waiting for board to become ready.\n");
+        rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_NOT_READY);
+        if (rc)
+                dev_warn(&pdev->dev,
+                        "failed waiting for board to become not ready\n");
+        rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
+        if (rc) {
+                dev_warn(&pdev->dev,
+                        "failed waiting for board to become ready\n");
+                goto unmap_cfgtable;
+        }
+        dev_info(&pdev->dev, "board ready.\n");
+
         /* Controller should be in simple mode at this point.  If it's not,
          * It means we're on one of those controllers which doesn't support
          * the doorbell reset method and on which the PCI power management reset
@@ -3432,18 +3450,28 @@ static int __devinit hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
         return -ENODEV;
 }
 
-static int __devinit hpsa_wait_for_board_ready(struct ctlr_info *h)
+static int __devinit hpsa_wait_for_board_state(struct pci_dev *pdev,
+        void __iomem *vaddr, int wait_for_ready)
 {
-        int i;
+        int i, iterations;
         u32 scratchpad;
+        if (wait_for_ready)
+                iterations = HPSA_BOARD_READY_ITERATIONS;
+        else
+                iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
 
-        for (i = 0; i < HPSA_BOARD_READY_ITERATIONS; i++) {
-                scratchpad = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
-                if (scratchpad == HPSA_FIRMWARE_READY)
-                        return 0;
+        for (i = 0; i < iterations; i++) {
+                scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
+                if (wait_for_ready) {
+                        if (scratchpad == HPSA_FIRMWARE_READY)
+                                return 0;
+                } else {
+                        if (scratchpad != HPSA_FIRMWARE_READY)
+                                return 0;
+                }
                 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
         }
-        dev_warn(&h->pdev->dev, "board not ready, timed out.\n");
+        dev_warn(&pdev->dev, "board not ready, timed out.\n");
         return -ENODEV;
 }
 
@@ -3635,7 +3663,7 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h)
                 err = -ENOMEM;
                 goto err_out_free_res;
         }
-        err = hpsa_wait_for_board_ready(h);
+        err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
         if (err)
                 goto err_out_free_res;
         err = hpsa_find_cfgtables(h);