From: Tejun Heo <htejun@gmail.com>
Date: Mon, 15 May 2006 11:57:33 +0000 (+0900)
Subject: [PATCH] libata: hold host_set lock while finishing internal qc
X-Git-Tag: v2.6.18-rc1~1079^2~98^2~48
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=158693031d7c58a355ec1852052a4fca75fd3bda;p=karo-tx-linux.git

[PATCH] libata: hold host_set lock while finishing internal qc

Hold host_set lock while finishing internal qc.

Signed-off-by: Tejun Heo <htejun@gmail.com>
---

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 86cd0e0895d0..13bce43f1915 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -1031,6 +1031,9 @@ unsigned ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
 		spin_unlock_irqrestore(&ap->host_set->lock, flags);
 	}
 
+	/* finish up */
+	spin_lock_irqsave(&ap->host_set->lock, flags);
+
 	*tf = qc->tf;
 	err_mask = qc->err_mask;
 
@@ -1052,6 +1055,8 @@ unsigned ata_exec_internal(struct ata_port *ap, struct ata_device *dev,
 		ata_port_probe(ap);
 	}
 
+	spin_unlock_irqrestore(&ap->host_set->lock, flags);
+
 	return err_mask;
 }