diff options
| author | Hannes Reinecke <hare@suse.de> | 2015-11-09 15:24:28 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2015-11-30 19:23:45 +0300 |
| commit | 09e2b0b14690fb13ccfc04af49f156df3e25b152 (patch) | |
| tree | 4643ba86b1896df0b6a119416f31db4d4da0851b /drivers/scsi/scsi_sysfs.c | |
| parent | fe0798c5e150be8f06959250076d3864477e74c2 (diff) | |
| download | linux-09e2b0b14690fb13ccfc04af49f156df3e25b152.tar.xz | |
scsi: rescan VPD attributes
The VPD page information might change, so we need to be able to update
it. This patch implements a VPD page rescan whenever the 'rescan' sysfs
attribute is triggered.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 8d2312239ae0..158f1b553acf 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -760,11 +760,15 @@ show_vpd_##_page(struct file *filp, struct kobject *kobj, \ { \ struct device *dev = container_of(kobj, struct device, kobj); \ struct scsi_device *sdev = to_scsi_device(dev); \ + int ret; \ if (!sdev->vpd_##_page) \ return -EINVAL; \ - return memory_read_from_buffer(buf, count, &off, \ - sdev->vpd_##_page, \ + rcu_read_lock(); \ + ret = memory_read_from_buffer(buf, count, &off, \ + rcu_dereference(sdev->vpd_##_page), \ sdev->vpd_##_page##_len); \ + rcu_read_unlock(); \ + return ret; \ } \ static struct bin_attribute dev_attr_vpd_##_page = { \ .attr = {.name = __stringify(vpd_##_page), .mode = S_IRUGO }, \ |