[libata] More PATA driver ->cable_detect support

[powerpc.git] / drivers / ide / ide-disk.c

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 0a05a37..37aa6dd 100644 (file)
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -43,8 +43,6 @@
 
 #define IDEDISK_VERSION        "1.18"
 
-#undef REALLY_SLOW_IO          /* most systems can safely undef this */
-
 //#define DEBUG
 
 #include <linux/module.h>
@@ -77,6 +75,7 @@ struct ide_disk_obj {
        ide_driver_t    *driver;
        struct gendisk  *disk;
        struct kref     kref;
+       unsigned int    openers;        /* protected by BKL for now */
 };
 
 static DEFINE_MUTEX(idedisk_ref_mutex);
@@ -1081,8 +1080,9 @@ static int idedisk_open(struct inode *inode, struct file *filp)
 
        drive = idkp->drive;
 
-       drive->usage++;
-       if (drive->removable && drive->usage == 1) {
+       idkp->openers++;
+
+       if (drive->removable && idkp->openers == 1) {
                ide_task_t args;
                memset(&args, 0, sizeof(ide_task_t));
                args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORLOCK;
@@ -1106,9 +1106,10 @@ static int idedisk_release(struct inode *inode, struct file *filp)
        struct ide_disk_obj *idkp = ide_disk_g(disk);
        ide_drive_t *drive = idkp->drive;
 
-       if (drive->usage == 1)
+       if (idkp->openers == 1)
                ide_cacheflush_p(drive);
-       if (drive->removable && drive->usage == 1) {
+
+       if (drive->removable && idkp->openers == 1) {
                ide_task_t args;
                memset(&args, 0, sizeof(ide_task_t));
                args.tfRegister[IDE_COMMAND_OFFSET] = WIN_DOORUNLOCK;
@@ -1117,7 +1118,8 @@ static int idedisk_release(struct inode *inode, struct file *filp)
                if (drive->doorlocking && ide_raw_taskfile(drive, &args, NULL))
                        drive->doorlocking = 0;
        }
-       drive->usage--;
+
+       idkp->openers--;
 
        ide_disk_put(idkp);