[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/zorro7xx.c b/drivers/scsi/zorro7xx.c
index 50703877a585..c822debc2668 100644
--- a/drivers/scsi/zorro7xx.c
+++ b/drivers/scsi/zorro7xx.c
@@ -130,6 +130,7 @@ static int __devinit zorro7xx_init_one(struct zorro_dev *z,
                 goto out_put_host;
         }
 
+        zorro_set_drvdata(z, host);
         scsi_scan_host(host);
 
         return 0;
@@ -148,7 +149,7 @@ static int __devinit zorro7xx_init_one(struct zorro_dev *z,
 
 static __devexit void zorro7xx_remove_one(struct zorro_dev *z)
 {
-        struct Scsi_Host *host = dev_to_shost(&z->dev);
+        struct Scsi_Host *host = zorro_get_drvdata(z);
         struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
 
         scsi_remove_host(host);