From 872225ca77519a243d7e19270b062b0ac53418d8 Mon Sep 17 00:00:00 2001 From: Mike Miller Date: Wed, 13 Dec 2006 00:34:22 -0800 Subject: [PATCH 1/1] [PATCH] cciss: remove calls to pci_disable_device Remove calls to pci_disable_device except in fail_all_cmds. The pci_disable_device function does something nasty to Smart Array controllers that pci_enable_device does not undo. So if the driver is unloaded it cannot be reloaded. Also, customers can disable any pci device via the ROM Based Setup Utility (RBSU). If the customer has disabled the controller we should not try to blindly enable the card from the driver. Please consider this for inclusion. Signed-off-by: Mike Miller Acked-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/cciss.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 8879e95b121..730f9693150 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -2837,7 +2837,7 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) if (err) { printk(KERN_ERR "cciss: Cannot obtain PCI resources, " "aborting\n"); - goto err_out_disable_pdev; + return err; } subsystem_vendor_id = pdev->subsystem_vendor; @@ -3005,10 +3005,11 @@ static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) return 0; err_out_free_res: + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ pci_release_regions(pdev); - - err_out_disable_pdev: - pci_disable_device(pdev); return err; } @@ -3382,8 +3383,11 @@ static int __devinit cciss_init_one(struct pci_dev *pdev, if (drv->queue) blk_cleanup_queue(drv->queue); } + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ pci_release_regions(pdev); - pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); free_hba(i); return -1; @@ -3452,8 +3456,11 @@ static void __devexit cciss_remove_one(struct pci_dev *pdev) #ifdef CONFIG_CISS_SCSI_TAPE kfree(hba[i]->scsi_rejects.complete); #endif + /* + * Deliberately omit pci_disable_device(): it does something nasty to + * Smart Array controllers that pci_enable_device does not undo + */ pci_release_regions(pdev); - pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); free_hba(i); } -- 2.41.0