> -----Original Message-----
> From: Gerald Britton [mailto:[email protected]]
> Sent: Monday, May 14, 2007 12:53 PM
> To: [email protected]; [email protected];
> Miller, Mike (OS Dev); ISS StorageDev;
> [email protected]; [email protected]
> Subject: [PATCH] cciss: Fix pci_driver.shutdown while device
> is still active
>
> 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.
Please send the Oops output.
mikem
>
> 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 <[email protected]>
> ---
> diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
> index 370dfe1..5acc6c4 100644
> --- a/drivers/block/cciss.c
> +++ b/drivers/block/cciss.c
> @@ -3469,13 +3469,39 @@ static int __devinit
> cciss_init_one(struct pci_dev *pdev,
> 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_dev *pdev)
>
> 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_driver = {
> .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,
> };
>
> /*
>
-
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