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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-05-21 09:55:04 -0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-05-22 14:08:24 -0500 |
| commit | 09ff92fea2890c697a36d8b26f5a3ea725ef8fb4 (patch) | |
| tree | b7e2ba71e34fcf0344aa6a2f0537a3478d72e191 /drivers/scsi/sd.c | |
| parent | cab537d609fb718e9fb09d73e3e3e3062db25743 (diff) | |
| download | lwn-09ff92fea2890c697a36d8b26f5a3ea725ef8fb4.tar.gz lwn-09ff92fea2890c697a36d8b26f5a3ea725ef8fb4.zip | |
[SCSI] sd: fix refcounting regression in suspend/resume routines
This patch (as909) fixes a couple of refcounting errors in the sd
driver's suspend and resume methods.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 00e46662296f..3d8c9cb24f91 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1789,7 +1789,7 @@ static void sd_shutdown(struct device *dev) static int sd_suspend(struct device *dev, pm_message_t mesg) { struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); - int ret; + int ret = 0; if (!sdkp) return 0; /* this can happen */ @@ -1798,30 +1798,34 @@ static int sd_suspend(struct device *dev, pm_message_t mesg) sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n"); ret = sd_sync_cache(sdkp); if (ret) - return ret; + goto done; } if (mesg.event == PM_EVENT_SUSPEND && sdkp->device->manage_start_stop) { sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); ret = sd_start_stop_device(sdkp, 0); - if (ret) - return ret; } - return 0; +done: + scsi_disk_put(sdkp); + return ret; } static int sd_resume(struct device *dev) { struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev); + int ret = 0; if (!sdkp->device->manage_start_stop) - return 0; + goto done; sd_printk(KERN_NOTICE, sdkp, "Starting disk\n"); + ret = sd_start_stop_device(sdkp, 1); - return sd_start_stop_device(sdkp, 1); +done: + scsi_disk_put(sdkp); + return ret; } /** |