lkml.org 
[lkml]   [2015]   [Oct]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCHv2 1/1] SCSI: update hosts module to use idr index management
>  struct Scsi_Host *scsi_host_lookup(unsigned short hostnum)
> {
> - struct device *cdev;
> - struct Scsi_Host *shost = NULL;
> -
> - cdev = class_find_device(&shost_class, NULL, &hostnum,
> - __scsi_host_match);
> - if (cdev) {
> - shost = scsi_host_get(class_to_shost(cdev));
> - put_device(cdev);
> - }
> + struct Scsi_Host *shost;
> +
> + spin_lock(&host_index_lock);
> + shost = idr_find(&host_index_idr, hostnum);
> + spin_unlock(&host_index_lock);
> +
> return shost;

How does this actually grab a reference to the host?


\
 
 \ /
  Last update: 2015-10-06 12:01    [W:0.161 / U:0.608 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site