diff options
| author | Stephen M. Cameron <scameron@beardog.cce.hp.com> | 2009-11-12 12:49:35 -0600 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2009-11-13 08:45:53 +0100 |
| commit | 29009a036f2feb07d8a9b3c715a6365dddd82a7a (patch) | |
| tree | ad6034e5b3272144e1277687ffce089aace1a558 /drivers | |
| parent | 7b838bde922730b9cfeaa93ba80bd31173941495 (diff) | |
cciss: clean up code in cciss_shutdown
cciss: clean up code in cciss_shutdown. Send the flush cache
command down with interrupts still enabled, and do not do DMA
from the stack.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/cciss.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 4321c94b552..f804542c1cf 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -4376,30 +4376,28 @@ clean_no_release_regions: static void cciss_shutdown(struct pci_dev *pdev) { - ctlr_info_t *tmp_ptr; - int i; - char flush_buf[4]; + ctlr_info_t *h; + char *flush_buf; int return_code; - tmp_ptr = pci_get_drvdata(pdev); - if (tmp_ptr == NULL) - return; - i = tmp_ptr->ctlr; - if (hba[i] == NULL) + h = pci_get_drvdata(pdev); + flush_buf = kzalloc(4, GFP_KERNEL); + if (!flush_buf) { + printk(KERN_WARNING + "cciss:%d cache not flushed, out of memory.\n", + h->ctlr); 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, - CTLR_LUNID, 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]); + /* write all data in the battery backed cache to disk */ + memset(flush_buf, 0, 4); + return_code = sendcmd_withirq(CCISS_CACHE_FLUSH, h->ctlr, flush_buf, + 4, 0, CTLR_LUNID, TYPE_CMD); + kfree(flush_buf); + if (return_code != IO_OK) + printk(KERN_WARNING "cciss%d: Error flushing cache\n", + h->ctlr); + h->access.set_intr_mask(h, CCISS_INTR_OFF); + free_irq(h->intr[2], h); } static void __devexit cciss_remove_one(struct pci_dev *pdev) |