A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 11:11:45 -04:00
Code Issues Projects Releases Packages Wiki Activity

scsi_dh: don't allow to detach device handlers at runtime

Browse source 
The I/O submission and completion paths call into the device handler
without any synchronization agains detachment.  So disallow detaching
device handlers at runtime.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Signed-off-by: James Bottomley <[email protected]>
This commit is contained in:
Christoph Hellwig 2015-08-27 14:17:01 +02:00 • committed by James Bottomley
commit d442277495
1 changed files with 4 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

6
drivers/scsi/scsi_dh.c
View file

@ -181,8 +181,10 @@ store_dh_state(struct device *dev, struct device_attribute *attr,
/*
* Detach from a device handler
*/
scsi_dh_handler_detach(sdev);
err = 0;
sdev_printk(KERN_WARNING, sdev,
"can't detach handler %s.\n",
sdev->handler->name);
err = -EINVAL;
} else if (!strncmp(buf, "activate", 8)) {
/*
* Activate a device handler