diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/cciss.c | 36 |
1 files changed, 31 insertions, 5 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 7990b98d4f73..865484e40841 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -558,7 +558,7 @@ static void __devinit cciss_procinit(ctlr_info_t *h) #define to_hba(n) container_of(n, struct ctlr_info, dev) #define to_drv(n) container_of(n, drive_info_struct, dev) -/* List of controllers which cannot be reset on kexec with reset_devices */ +/* List of controllers which cannot be hard reset on kexec with reset_devices */ static u32 unresettable_controller[] = { 0x324a103C, /* Smart Array P712m */ 0x324b103C, /* SmartArray P711m */ @@ -576,23 +576,45 @@ static u32 unresettable_controller[] = { 0x409D0E11, /* Smart Array 6400 EM */ }; -static int ctlr_is_resettable(struct ctlr_info *h) +/* List of controllers which cannot even be soft reset */ +static u32 soft_unresettable_controller[] = { + 0x409C0E11, /* Smart Array 6400 */ + 0x409D0E11, /* Smart Array 6400 EM */ +}; + +static int ctlr_is_hard_resettable(u32 board_id) { int i; for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) - if (unresettable_controller[i] == h->board_id) + if (unresettable_controller[i] == board_id) return 0; return 1; } +static int ctlr_is_soft_resettable(u32 board_id) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) + if (soft_unresettable_controller[i] == board_id) + return 0; + return 1; +} + +static int ctlr_is_resettable(u32 board_id) +{ + return ctlr_is_hard_resettable(board_id) || + ctlr_is_soft_resettable(board_id); +} + static ssize_t host_show_resettable(struct device *dev, struct device_attribute *attr, char *buf) { struct ctlr_info *h = to_hba(dev); - return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h)); + return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id)); } static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); @@ -4601,12 +4623,16 @@ static __devinit int cciss_kdump_hard_reset_controller(struct pci_dev *pdev) * likely not be happy. Just forbid resetting this conjoined mess. */ cciss_lookup_board_id(pdev, &board_id); - if (board_id == 0x409C0E11 || board_id == 0x409D0E11) { + if (!ctlr_is_resettable(board_id)) { dev_warn(&pdev->dev, "Cannot reset Smart Array 640x " "due to shared cache module."); return -ENODEV; } + /* if controller is soft- but not hard resettable... */ + if (!ctlr_is_hard_resettable(board_id)) + return -ENOTSUPP; /* try soft reset later. */ + /* Save the PCI command register */ pci_read_config_word(pdev, 4, &command_register); /* Turn the board off. This is so that later pci_restore_state() |