X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fscsi%2Fsg.c;h=d3b8ebb8377639c92e8e44503aa828554734c055;hb=374e042c3e767ac2e5a40b78529220e0b3de793c;hp=f7abccaffaec47c73465b7698bb0c6cdf47ae84e;hpb=0b07de85a76e1346e675f0e98437378932473df7;p=linux-2.6

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f7abccaffa..d3b8ebb837 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -49,6 +49,7 @@ static int sg_version_num = 30534;	/* 2 digits for each component */
 #include <linux/delay.h>
 #include <linux/scatterlist.h>
 #include <linux/blktrace_api.h>
+#include <linux/smp_lock.h>
 
 #include "scsi.h"
 #include <scsi/scsi_dbg.h>
@@ -227,19 +228,26 @@ sg_open(struct inode *inode, struct file *filp)
 	int res;
 	int retval;
 
+	lock_kernel();
 	nonseekable_open(inode, filp);
 	SCSI_LOG_TIMEOUT(3, printk("sg_open: dev=%d, flags=0x%x\n", dev, flags));
 	sdp = sg_get_dev(dev);
-	if ((!sdp) || (!sdp->device))
+	if ((!sdp) || (!sdp->device)) {
+		unlock_kernel();
 		return -ENXIO;
-	if (sdp->detached)
+	}
+	if (sdp->detached) {
+		unlock_kernel();
 		return -ENODEV;
+	}
 
 	/* This driver's module count bumped by fops_get in <linux/fs.h> */
 	/* Prevent the device driver from vanishing while we sleep */
 	retval = scsi_device_get(sdp->device);
-	if (retval)
+	if (retval) {
+		unlock_kernel();
 		return retval;
+	}
 
 	if (!((flags & O_NONBLOCK) ||
 	      scsi_block_when_processing_errors(sdp->device))) {
@@ -295,10 +303,12 @@ sg_open(struct inode *inode, struct file *filp)
 		retval = -ENOMEM;
 		goto error_out;
 	}
+	unlock_kernel();
 	return 0;
 
       error_out:
 	scsi_device_put(sdp->device);
+	unlock_kernel();
 	return retval;
 }
 
@@ -679,7 +689,7 @@ sg_new_write(Sg_fd *sfp, struct file *file, const char __user *buf,
 		sg_remove_request(sfp, srp);
 		return -EFAULT;
 	}
-	if (read_only && (!blk_verify_command(file, cmnd))) {
+	if (read_only && !blk_verify_command(file, cmnd)) {
 		sg_remove_request(sfp, srp);
 		return -EPERM;
 	}
@@ -1026,6 +1036,9 @@ sg_ioctl(struct inode *inode, struct file *filp,
 		case SG_SCSI_RESET_DEVICE:
 			val = SCSI_TRY_RESET_DEVICE;
 			break;
+		case SG_SCSI_RESET_TARGET:
+			val = SCSI_TRY_RESET_TARGET;
+			break;
 		case SG_SCSI_RESET_BUS:
 			val = SCSI_TRY_RESET_BUS;
 			break;
@@ -2502,10 +2515,6 @@ sg_page_free(struct page *page, int size)
 	__free_pages(page, order);
 }
 
-#ifndef MAINTENANCE_IN_CMD
-#define MAINTENANCE_IN_CMD 0xa3
-#endif
-
 #ifdef CONFIG_SCSI_PROC_FS
 static int
 sg_idr_max_id(int id, void *p, void *data)