* [PATCH] fix oops caused when writing to the rescan attribute
@ 2003-09-30 22:27 Mike Christie
0 siblings, 0 replies; only message in thread
From: Mike Christie @ 2003-09-30 22:27 UTC (permalink / raw)
To: linux-scsi
[-- Attachment #1: Type: text/plain, Size: 244 bytes --]
If an upper layer driver is not loaded, and you write to a device's
rescan attribute you will get an oops. The attached patch fixes this by
testing if the device's driver variable is set before accessing it.
Mike Christie
mikenc@us.ibm.com
[-- Attachment #2: sysfs_rescan.patch --]
[-- Type: text/plain, Size: 479 bytes --]
--- linux-2.6.0-test6/drivers/scsi/scsi_scan.c 2003-09-27 17:50:40.000000000 -0700
+++ linux-2.6.0-test6-work/drivers/scsi/scsi_scan.c 2003-09-30 04:12:25.000000000 -0700
@@ -1080,8 +1080,12 @@
void scsi_rescan_device(struct device *dev)
{
- struct scsi_driver *drv = to_scsi_driver(dev->driver);
+ struct scsi_driver *drv;
+
+ if (!dev->driver)
+ return;
+ drv = to_scsi_driver(dev->driver);
if (try_module_get(drv->owner)) {
if (drv->rescan)
drv->rescan(dev);
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2003-09-30 22:27 [PATCH] fix oops caused when writing to the rescan attribute Mike Christie
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