From: David Altobelli <david.altobelli@hp.com>
Subject: [PATCH] hpilo open/close fix
References: bnc#466517

Fix to hpilo module, patch against 2.6.28.
The device can take a while to respond to an open/close request, so increase
the time kernel will wait for response (1 ms to 10ms).
Also, properly clean up a channel on a failed open, by calling the
channel close routine.  Just freeing the memory isn't sufficient, the device
needs to be informed that the channel is no longer open, and the device
memory cleared of references to freed dma buffer.

Please CC me on any replies.

Signed-off-by: David Altobelli <david.altobelli@hp.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
---

 drivers/misc/hpilo.c |    8 ++++----
 drivers/misc/hpilo.h |    2 ++
 2 files changed, 6 insertions(+), 4 deletions(-)

--- a/drivers/misc/hpilo.c
+++ b/drivers/misc/hpilo.c
@@ -207,7 +207,7 @@ static void ilo_ccb_close(struct pci_dev
 		  &device_ccb->recv_ctrl);
 
 	/* give iLO some time to process stop request */
-	for (retries = 1000; retries > 0; retries--) {
+	for (retries = MAX_WAIT; retries > 0; retries--) {
 		doorbell_set(driver_ccb);
 		udelay(1);
 		if (!(ioread32(&device_ccb->send_ctrl) & (1 << CTRL_BITPOS_A))
@@ -309,7 +309,7 @@ static int ilo_ccb_open(struct ilo_hwinf
 	doorbell_clr(driver_ccb);
 
 	/* make sure iLO is really handling requests */
-	for (i = 1000; i > 0; i--) {
+	for (i = MAX_WAIT; i > 0; i--) {
 		if (ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, NULL, NULL))
 			break;
 		udelay(1);
@@ -326,7 +326,7 @@ static int ilo_ccb_open(struct ilo_hwinf
 
 	return 0;
 free:
-	pci_free_consistent(pdev, data->dma_size, data->dma_va, data->dma_pa);
+	ilo_ccb_close(pdev, data);
 out:
 	return error;
 }
@@ -759,7 +759,7 @@ static void __exit ilo_exit(void)
 	class_destroy(ilo_class);
 }
 
-MODULE_VERSION("0.05");
+MODULE_VERSION("0.06");
 MODULE_ALIAS(ILO_NAME);
 MODULE_DESCRIPTION(ILO_NAME);
 MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");
--- a/drivers/misc/hpilo.h
+++ b/drivers/misc/hpilo.h
@@ -19,6 +19,8 @@
 #define MAX_ILO_DEV	1
 /* max number of files */
 #define MAX_OPEN	(MAX_CCB * MAX_ILO_DEV)
+/* spin counter for open/close delay */
+#define MAX_WAIT	10000
 
 /*
  * Per device, used to track global memory allocations.