commit dea3f665d6fa263a9870a54e9f8cfd146016f140
author Jonathan Corbet <corbet@lwn.net> Fri May 16 14:11:09 2008 -0600
committer Jonathan Corbet <corbet@lwn.net> Fri Jun 20 14:05:52 2008 -0600
tree db875a35dcc762c01439588afa5fb542bac8f8e3
parent 9aaf20cbf5b7cccd45495326cba0b35b2884e6b3

dpt_i20: BKL pushdown

Add lock_kernel() calls to adpt_open()

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

drivers/scsi/dpt_i2o.c

diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index 8508816..2bc30e3 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -49,6 +49,7 @@
 #include <linux/kernel.h>	/* for printk */
 #include <linux/sched.h>
 #include <linux/reboot.h>
+#include <linux/smp_lock.h>
 #include <linux/spinlock.h>
 #include <linux/dma-mapping.h>
 
@@ -1727,10 +1728,12 @@
 	int minor;
 	adpt_hba* pHba;
 
+	lock_kernel();
 	//TODO check for root access
 	//
 	minor = iminor(inode);
 	if (minor >= hba_count) {
+		unlock_kernel();
 		return -ENXIO;
 	}
 	mutex_lock(&adpt_configuration_lock);
@@ -1741,6 +1744,7 @@
 	}
 	if (pHba == NULL) {
 		mutex_unlock(&adpt_configuration_lock);
+		unlock_kernel();
 		return -ENXIO;
 	}
 
@@ -1751,6 +1755,7 @@
 
 	pHba->in_use = 1;
 	mutex_unlock(&adpt_configuration_lock);
+	unlock_kernel();
 
 	return 0;
 }