The patch titled
cciss: fix pci_driver.shutdown while device is still active
has been removed from the -mm tree. Its filename was
cciss-fix-pci_drivershutdown-while-device-is-still-active.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: cciss: fix pci_driver.shutdown while device is still active
From: Gerald Britton <gbritton@xxxxxxxxxxxx>
Fix an Oops in the cciss driver caused by system shutdown while a
filesystem on a cciss device is still active. The cciss_remove_one
function only properly removes the device if the device has been cleanly
released by its users, which is not the case when the pci_driver.shutdown
method is called.
This patch adds a new cciss_shutdown function to better match the pattern
used by various SCSI drivers: deactivate device interrupts and flush
caches. It also alters the cciss_remove_one function to match and readds
the __devexit annotation that was removed when cciss_remove_one was serving
as the pci_driver.shutdown method.
Signed-off-by: Gerald Britton <gbritton@xxxxxxxxxxxx>
Acked-by: Mike Miller <mike.miller@xxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/cciss.c | 45 ++++++++++++++++++++++++++--------------
1 files changed, 30 insertions(+), 15 deletions(-)
diff -puN drivers/block/cciss.c~cciss-fix-pci_drivershutdown-while-device-is-still-active drivers/block/cciss.c
--- a/drivers/block/cciss.c~cciss-fix-pci_drivershutdown-while-device-is-still-active
+++ a/drivers/block/cciss.c
@@ -3469,13 +3469,39 @@ static int __devinit cciss_init_one(stru
return -1;
}
-static void cciss_remove_one(struct pci_dev *pdev)
+static void cciss_shutdown(struct pci_dev *pdev)
{
ctlr_info_t *tmp_ptr;
- int i, j;
+ int i;
char flush_buf[4];
int return_code;
+ tmp_ptr = pci_get_drvdata(pdev);
+ if (tmp_ptr == NULL)
+ return;
+ i = tmp_ptr->ctlr;
+ if (hba[i] == NULL)
+ return;
+
+ /* Turn board interrupts off and send the flush cache command */
+ /* sendcmd will turn off interrupt, and send the flush...
+ * To write all data in the battery backed cache to disks */
+ memset(flush_buf, 0, 4);
+ return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
+ TYPE_CMD);
+ if (return_code == IO_OK) {
+ printk(KERN_INFO "Completed flushing cache on controller %d\n", i);
+ } else {
+ printk(KERN_WARNING "Error flushing cache on controller %d\n", i);
+ }
+ free_irq(hba[i]->intr[2], hba[i]);
+}
+
+static void __devexit cciss_remove_one(struct pci_dev *pdev)
+{
+ ctlr_info_t *tmp_ptr;
+ int i, j;
+
if (pci_get_drvdata(pdev) == NULL) {
printk(KERN_ERR "cciss: Unable to remove device \n");
return;
@@ -3506,18 +3532,7 @@ static void cciss_remove_one(struct pci_
cciss_unregister_scsi(i); /* unhook from SCSI subsystem */
- /* Turn board interrupts off and send the flush cache command */
- /* sendcmd will turn off interrupt, and send the flush...
- * To write all data in the battery backed cache to disks */
- memset(flush_buf, 0, 4);
- return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL,
- TYPE_CMD);
- if (return_code == IO_OK) {
- printk(KERN_INFO "Completed flushing cache on controller %d\n", i);
- } else {
- printk(KERN_WARNING "Error flushing cache on controller %d\n", i);
- }
- free_irq(hba[i]->intr[2], hba[i]);
+ cciss_shutdown(pdev);
#ifdef CONFIG_PCI_MSI
if (hba[i]->msix_vector)
@@ -3550,7 +3565,7 @@ static struct pci_driver cciss_pci_drive
.probe = cciss_init_one,
.remove = __devexit_p(cciss_remove_one),
.id_table = cciss_pci_device_id, /* id_table */
- .shutdown = cciss_remove_one,
+ .shutdown = cciss_shutdown,
};
/*
_
Patches currently in -mm which might be from gbritton@xxxxxxxxxxxx are
-
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