[SCSI] a4000t, zorro7xx, mvme16x, bvme6000,sim710: xxx_device_remove seems buggy

Fix drivers misusing dev_to_shost

Some drivers were using dev_to_shost to go from a struct device to the
corresponding shost.  Unfortunately, dev_to_shost only looks up the tree
to find an shost (it's designed to go from a scsi_device or a
scsi_target to the parent scsi_host), and these drivers were calling it
with the parent of the scsi_host.

I've fixed this by saving a pointer to the Scsi_Host in the drvdata,
which matches what most scsi drivers do.

Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/scsi/a4000t.c b/drivers/scsi/a4000t.c
index 6a5784683ed3..0c758d1452ba 100644
--- a/drivers/scsi/a4000t.c
+++ b/drivers/scsi/a4000t.c
@@ -79,6 +79,7 @@ static int __devinit a4000t_probe(struct device *dev)
                 goto out_put_host;
         }
 
+        dev_set_drvdata(dev, host);
         scsi_scan_host(host);
 
         return 0;
@@ -95,7 +96,7 @@ static int __devinit a4000t_probe(struct device *dev)
 
 static __devexit int a4000t_device_remove(struct device *dev)
 {
-        struct Scsi_Host *host = dev_to_shost(dev);
+        struct Scsi_Host *host = dev_get_drvdata(dev);
         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
 
         scsi_remove_host(host);