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| author | James Bottomley <James.Bottomley@steeleye.com> | 2006-02-14 10:48:46 -0600 |
|---|---|---|
| committer | <jejb@mulgrave.il.steeleye.com> | 2006-02-14 11:15:11 -0600 |
| commit | 65110b2168950a19cc78b5027ed18cb811fbdae8 (patch) | |
| tree | 8cdf4fc26b707e0e6ba988fd56da118d3206dceb /drivers/scsi/scsi_sysfs.c | |
| parent | faead26d7a06605add627f29aee73ba654ce11f9 (diff) | |
| download | lwn-65110b2168950a19cc78b5027ed18cb811fbdae8.tar.gz lwn-65110b2168950a19cc78b5027ed18cb811fbdae8.zip | |
[SCSI] fix wrong context bugs in SCSI
There's a bug in releasing scsi_device where the release function
actually frees the block queue. However, the block queue release
calls flush_work(), which requires process context (the scsi_device
structure may release from irq context). Update the release function
to invoke via the execute_in_process_context() API.
Also clean up the scsi_target structure releasing via this API.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_sysfs.c')
| -rw-r--r-- | drivers/scsi/scsi_sysfs.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index a77b32deaf8f..902a5def8e62 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -217,8 +217,9 @@ static void scsi_device_cls_release(struct class_device *class_dev) put_device(&sdev->sdev_gendev); } -static void scsi_device_dev_release(struct device *dev) +static void scsi_device_dev_release_usercontext(void *data) { + struct device *dev = data; struct scsi_device *sdev; struct device *parent; struct scsi_target *starget; @@ -237,6 +238,7 @@ static void scsi_device_dev_release(struct device *dev) if (sdev->request_queue) { sdev->request_queue->queuedata = NULL; + /* user context needed to free queue */ scsi_free_queue(sdev->request_queue); /* temporary expedient, try to catch use of queue lock * after free of sdev */ @@ -252,6 +254,11 @@ static void scsi_device_dev_release(struct device *dev) put_device(parent); } +static void scsi_device_dev_release(struct device *dev) +{ + scsi_execute_in_process_context(scsi_device_dev_release_usercontext, dev); +} + static struct class sdev_class = { .name = "scsi_device", .release = scsi_device_cls_release, |