[SCSI] aic7xxx: remove ahc_find_softc

there's absolutely no reason not to trust the driver private data

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

5 files changed, 16 insertions, 63 deletions

diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index 682ca0b32b44..d0e9b54ab008 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -190,25 +190,13 @@ aic7770_eisa_dev_probe(struct device *dev)
 static int
 aic7770_eisa_dev_remove(struct device *dev)
 {
-        struct ahc_softc *ahc;
-        u_long l;
+        struct ahc_softc *ahc = dev_get_drvata(dev);
+        u_long s;
 
-        /*
-         * We should be able to just perform
-         * the free directly, but check our
-         * list for extra sanity.
-         */
-        ahc_list_lock(&l);
-        ahc = ahc_find_softc((struct ahc_softc *)dev->driver_data);
-        if (ahc != NULL) {
-                u_long s;
-
-                ahc_lock(ahc, &s);
-                ahc_intr_enable(ahc, FALSE);
-                ahc_unlock(ahc, &s);
-                ahc_free(ahc);
-        }
-        ahc_list_unlock(&l);
+        ahc_lock(ahc, &s);
+        ahc_intr_enable(ahc, FALSE);
+        ahc_unlock(ahc, &s);
+        ahc_free(ahc);
 
         return (0);
 }
diff --git a/drivers/scsi/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h
index 8ff16fd8ed49..d094e7371734 100644
--- a/drivers/scsi/aic7xxx/aic7xxx.h
+++ b/drivers/scsi/aic7xxx/aic7xxx.h
@@ -1200,7 +1200,6 @@ void			 ahc_pause_and_flushwork(struct ahc_softc *ahc);
 int                      ahc_suspend(struct ahc_softc *ahc); 
 int                      ahc_resume(struct ahc_softc *ahc);
 void                     ahc_softc_insert(struct ahc_softc *);
-struct ahc_softc        *ahc_find_softc(struct ahc_softc *ahc);
 void                     ahc_set_unit(struct ahc_softc *, int);
 void                     ahc_set_name(struct ahc_softc *, char *);
 void                     ahc_alloc_scbs(struct ahc_softc *ahc);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c
index 9a6b4a570aa7..8a2bb6f8d77b 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_core.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_core.c
@@ -3934,22 +3934,6 @@ ahc_softc_insert(struct ahc_softc *ahc)
         ahc->init_level++;
 }
 
-/*
- * Verify that the passed in softc pointer is for a
- * controller that is still configured.
- */
-struct ahc_softc *
-ahc_find_softc(struct ahc_softc *ahc)
-{
-        struct ahc_softc *list_ahc;
-
-        TAILQ_FOREACH(list_ahc, &ahc_tailq, links) {
-                if (list_ahc == ahc)
-                        return (ahc);
-        }
-        return (NULL);
-}
-
 void
 ahc_set_unit(struct ahc_softc *ahc, int unit)
 {
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 9cd4fe1c4ef2..89d737ee551a 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -140,27 +140,17 @@ struct pci_driver aic7xxx_pci_driver = {
 static void
 ahc_linux_pci_dev_remove(struct pci_dev *pdev)
 {
-        struct ahc_softc *ahc;
-        u_long l;
+        struct ahc_softc *ahc = pci_get_drvdata(pdev);
+        u_long s;
 
-        /*
-         * We should be able to just perform
-         * the free directly, but check our
-         * list for extra sanity.
-         */
-        ahc_list_lock(&l);
-        ahc = ahc_find_softc((struct ahc_softc *)pci_get_drvdata(pdev));
-        if (ahc != NULL) {
-                u_long s;
+        ahc_list_lock(&s);
+        TAILQ_REMOVE(&ahc_tailq, ahc, links);
+        ahc_list_unlock(&s);
 
-                TAILQ_REMOVE(&ahc_tailq, ahc, links);
-                ahc_list_unlock(&l);
-                ahc_lock(ahc, &s);
-                ahc_intr_enable(ahc, FALSE);
-                ahc_unlock(ahc, &s);
-                ahc_free(ahc);
-        } else
-                ahc_list_unlock(&l);
+        ahc_lock(ahc, &s);
+        ahc_intr_enable(ahc, FALSE);
+        ahc_unlock(ahc, &s);
+        ahc_free(ahc);
 }
 
 static int
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 9c7f1056710d..ab4469d83fb1 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -297,20 +297,13 @@ int
 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
                     off_t offset, int length, int inout)
 {
-        struct  ahc_softc *ahc;
+        struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
         struct  info_str info;
         char    ahc_info[256];
-        u_long  s;
         u_int   max_targ;
         u_int   i;
         int     retval;
 
-        retval = -EINVAL;
-        ahc_list_lock(&s);
-        ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
-        if (ahc == NULL)
-                goto done;
-
          /* Has data been written to the file? */ 
         if (inout == TRUE) {
                 retval = ahc_proc_write_seeprom(ahc, buffer, length);
@@ -372,6 +365,5 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
         }
         retval = info.pos > info.offset ? info.pos - info.offset : 0;
 done:
-        ahc_list_unlock(&s);
         return (retval);
 }