[Patch 1/1] cciss: bug fix, prevent cciss from loading in kdump kernel

Mike Miller
2013-04-15T17:59:06Z

Patch 1/1

If hpsa is selected as the Smart Array driver cciss may try to load in the
kdump kernel. When this happens kdump fails and a core file cannot be created.
This patch prevents cciss from trying to load in this scenario. This effects
primarily older Smart Array controllers.

From: Mike Miller <mike.miller@hp.com>
Signed-off-by: Mike Miller <mike.miller@hp.com>
---
drivers/block/cciss.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 1c1b8e5..a6c0973 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -4960,6 +4960,12 @@ static int cciss_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
ctlr_info_t *h;
unsigned long flags;

+ /*
+ * if this is the kdump kernel and the user has set the flags to
+ * use hpsa rather than cciss just bail
+ */
+ if ((reset_devices) && (cciss_allow_hpsa == 1))
+ return -ENODEV;
rc = cciss_init_reset_devices(pdev);
if (rc) {
if (rc != -ENOTSUPP)