lkml.org 
[lkml]   [2014]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v1.2 17/16] arcmsr: fixed calling scsi_scan_host after all initialization done
On 05/15/2014 12:49 PM, ching wrote:
> Hi Tomas,
>
> Then I will have a patch 18/16 to replace flush_scheduled_work with flush_work.
> Thanks for your advice.

Here http://www.makelinux.net/ldd3/chp-7-sect-6 is a short text about workqueue,
the use of schedule_work in your sources means that you use the global queue.
If that is true, flush_scheduled_work is the right choice.

>
> On Wed, 2014-05-14 at 14:53 +0200, Tomas Henzl wrote:
>> On 05/14/2014 01:55 PM, ching wrote:
>>> From: Ching<ching2048@areca.com.tw>
>>>
>>> This is a new patch after patch v1.1 series.
>>>
>>> Fixed calling scsi_scan_host until all initialization are done.
>>> And fixed error path free allocated resource.
>>>
>>> Signed-off-by: Ching<ching2048@areca.com.tw>
>>> ---
>>>
>>> diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
>>> --- a/drivers/scsi/arcmsr/arcmsr_hba.c 2014-05-08 17:45:34.000000000 +0800
>>> +++ b/drivers/scsi/arcmsr/arcmsr_hba.c 2014-05-14 18:29:30.000000000 +0800
>>> @@ -112,6 +112,7 @@ static void arcmsr_hbaD_message_isr(stru
>>> static void arcmsr_hardware_reset(struct AdapterControlBlock *acb);
>>> static const char *arcmsr_info(struct Scsi_Host *);
>>> static irqreturn_t arcmsr_interrupt(struct AdapterControlBlock *acb);
>>> +static void arcmsr_free_irq(struct pci_dev *, struct AdapterControlBlock *);
>>> static int arcmsr_adjust_disk_queue_depth(struct scsi_device *sdev,
>>> int queue_depth, int reason)
>>> {
>>> @@ -778,12 +779,11 @@ static int arcmsr_probe(struct pci_dev *
>>> }
>>> error = scsi_add_host(host, &pdev->dev);
>>> if(error){
>>> - goto RAID_controller_stop;
>>> + goto free_ccb_pool;
>>> }
>>> if (arcmsr_request_irq(pdev, acb) == ARC_FAILURE)
>>> goto scsi_host_remove;
>>> arcmsr_iop_init(acb);
>>> - scsi_scan_host(host);
>>> INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
>>> atomic_set(&acb->rq_map_token, 16);
>>> atomic_set(&acb->ante_token_value, 16);
>>> @@ -795,13 +795,17 @@ static int arcmsr_probe(struct pci_dev *
>>> add_timer(&acb->eternal_timer);
>>> if(arcmsr_alloc_sysfs_attr(acb))
>>> goto out_free_sysfs;
>>> + scsi_scan_host(host);
>>> return 0;
>>> out_free_sysfs:
>>> -scsi_host_remove:
>>> - scsi_remove_host(host);
>>> -RAID_controller_stop:
>>> + del_timer_sync(&acb->eternal_timer);
>>> + flush_work(&acb->arcmsr_do_message_isr_bh);
>> In your driver you use both flush_work(struct work_struct *) and flush_scheduled_work(),
>> the second form is used used to flush the shared workqueue.
>> That said (and I think you use just one queue) you should decide which one is correct.
>> In my previous mail I have asked about flush_work because i have it seen elsewhere in
>> your code, now I've noticed the use of schedule_work and that means that you are using the global wq.
>>
>>
>>> arcmsr_stop_adapter_bgrb(acb);
>>> arcmsr_flush_adapter_cache(acb);
>>> + arcmsr_free_irq(pdev, acb);
>>> +scsi_host_remove:
>>> + scsi_remove_host(host);
>>> +free_ccb_pool:
>>> arcmsr_free_ccb_pool(acb);
>>> free_hbb_mu:
>>> arcmsr_free_mu(acb);
>>>
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>



\
 
 \ /
  Last update: 2014-05-15 15:01    [W:2.014 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site