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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-12-06 20:39:33 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:43 -0800
commitaaeab80bdbc0d10a98adc6fa76c29ca2f1816553 (patch)
tree834f6a62ad9ba24da6aceeacacba93c3cc66b369
parent2ee91f197c0bc654b24eed5831fd12aa0d566a7d (diff)
[PATCH] ide_scsi: allow it to be used for non CD only
Some people want to use ide_cd for CD-ROM but still dynamically load ide-scsi for things like tape drives. If you compile in the CD driver this works out but if you want them modular you need an option to ensure that whoever loads first the right things happen. This replaces the original draft patch which leaked a scsi host reference [akpm@osdl.org: add MODULE_PARM_DESC] Signed-off-by: Alan Cox <alan@redhat.com> Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--drivers/scsi/ide-scsi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 1427a41e844..8f6b5bf580f 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -110,6 +110,7 @@ typedef struct ide_scsi_obj {
} idescsi_scsi_t;
static DEFINE_MUTEX(idescsi_ref_mutex);
+static int idescsi_nocd; /* Set by module param to skip cd */
#define ide_scsi_g(disk) \
container_of((disk)->private_data, struct ide_scsi_obj, driver)
@@ -1127,6 +1128,9 @@ static int ide_scsi_probe(ide_drive_t *drive)
warned = 1;
}
+ if (idescsi_nocd && drive->media == ide_cdrom)
+ return -ENODEV;
+
if (!strstr("ide-scsi", drive->driver_req) ||
!drive->present ||
drive->media == ide_disk ||
@@ -1187,6 +1191,8 @@ static void __exit exit_idescsi_module(void)
driver_unregister(&idescsi_driver.gen_driver);
}
+module_param(idescsi_nocd, int, 0600);
+MODULE_PARM_DESC(idescsi_nocd, "Disable handling of CD-ROMs so they may be driven by ide-cd");
module_init(init_idescsi_module);
module_exit(exit_idescsi_module);
MODULE_LICENSE("GPL");