pcmcia: pccard_read_tuple and TUPLE_RETURN_COMMON cleanup

pccard_read_tuple(), which is only used by the PCMCIA core, should
handle TUPLE_RETURN_COMMON more sensibly: If a specific function (which
may be 0) is requested, set tuple.Attributes = 0 as was done in all
PCMCIA drivers. If, however, BIND_FN_ALL is requested, return the
"common" tuple. As to the callers of pccard_read_tuple():

- All calls to pcmcia_validate_cis() had set the "function" parameter to
  BIND_FN_ALL. Therefore, remove the "function" parameter and make the
  parameter to pccard_read_tuple explicit.

- Calls to CISTPL_VERS_1 and CISTPL_MANFID now set BIND_FN_ALL. This was
  already the case for calls to CISTPL_LONGLINK_MFC.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

6 files changed, 18 insertions, 17 deletions

diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c
index 4a110b7b2673..6c4a4fc83630 100644
--- a/drivers/pcmcia/cistpl.c
+++ b/drivers/pcmcia/cistpl.c
@@ -1463,7 +1463,9 @@ int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t
             return -ENOMEM;
     }
     tuple.DesiredTuple = code;
-    tuple.Attributes = TUPLE_RETURN_COMMON;
+    tuple.Attributes = 0;
+    if (function == BIND_FN_ALL)
+            tuple.Attributes = TUPLE_RETURN_COMMON;
     ret = pccard_get_first_tuple(s, function, &tuple);
     if (ret != 0)
             goto done;
@@ -1490,7 +1492,7 @@ EXPORT_SYMBOL(pccard_read_tuple);
     
 ======================================================================*/
 
-int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, unsigned int *info)
+int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info)
 {
     tuple_t *tuple;
     cisparse_t *p;
@@ -1515,30 +1517,30 @@ int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, unsigned
     count = reserved = 0;
     tuple->DesiredTuple = RETURN_FIRST_TUPLE;
     tuple->Attributes = TUPLE_RETURN_COMMON;
-    ret = pccard_get_first_tuple(s, function, tuple);
+    ret = pccard_get_first_tuple(s, BIND_FN_ALL, tuple);
     if (ret != 0)
         goto done;
 
     /* First tuple should be DEVICE; we should really have either that
        or a CFTABLE_ENTRY of some sort */
     if ((tuple->TupleCode == CISTPL_DEVICE) ||
-        (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == 0) ||
-        (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == 0))
+        (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY, p) == 0) ||
+        (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY_CB, p) == 0))
         dev_ok++;
 
     /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
        tuple, for card identification.  Certain old D-Link and Linksys
        cards have only a broken VERS_2 tuple; hence the bogus test. */
-    if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == 0) ||
-        (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == 0) ||
-        (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != -ENOSPC))
+    if ((pccard_read_tuple(s, BIND_FN_ALL, CISTPL_MANFID, p) == 0) ||
+        (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_1, p) == 0) ||
+        (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_2, p) != -ENOSPC))
         ident_ok++;
 
     if (!dev_ok && !ident_ok)
         goto done;
 
     for (count = 1; count < MAX_TUPLES; count++) {
-        ret = pccard_get_next_tuple(s, function, tuple);
+        ret = pccard_get_next_tuple(s, BIND_FN_ALL, tuple);
         if (ret != 0)
                 break;
         if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
diff --git a/drivers/pcmcia/cs_internal.h b/drivers/pcmcia/cs_internal.h
index 79615e6d540b..1f4098f1354d 100644
--- a/drivers/pcmcia/cs_internal.h
+++ b/drivers/pcmcia/cs_internal.h
@@ -197,8 +197,7 @@ int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
                       cisdata_t code, void *parse);
 int pcmcia_replace_cis(struct pcmcia_socket *s,
                        const u8 *data, const size_t len);
-int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function,
-                        unsigned int *count);
+int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *count);
 
 /* rsrc_mgr.c */
 int pcmcia_validate_mem(struct pcmcia_socket *s);
diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c
index 9f300d3cb125..c70fb3bc0e0f 100644
--- a/drivers/pcmcia/ds.c
+++ b/drivers/pcmcia/ds.c
@@ -547,7 +547,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
         if (!vers1)
                 return -ENOMEM;
 
-        if (!pccard_read_tuple(p_dev->socket, p_dev->func,
+        if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL,
                                CISTPL_MANFID, &manf_id)) {
                 p_dev->manf_id = manf_id.manf;
                 p_dev->card_id = manf_id.card;
@@ -581,7 +581,7 @@ static int pcmcia_device_query(struct pcmcia_device *p_dev)
                 kfree(devgeo);
         }
 
-        if (!pccard_read_tuple(p_dev->socket, p_dev->func, CISTPL_VERS_1,
+        if (!pccard_read_tuple(p_dev->socket, BIND_FN_ALL, CISTPL_VERS_1,
                                vers1)) {
                 for (i=0; i < vers1->ns; i++) {
                         char *tmp;
@@ -733,7 +733,7 @@ static int pcmcia_card_add(struct pcmcia_socket *s)
                 return -EAGAIN; /* try again, but later... */
         }
 
-        ret = pccard_validate_cis(s, BIND_FN_ALL, &no_chains);
+        ret = pccard_validate_cis(s, &no_chains);
         if (ret || !no_chains) {
                 ds_dev_dbg(0, &s->dev, "invalid CIS or invalid resources\n");
                 return -ENODEV;
diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index 32c44040c1e8..30cf71d2ee23 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -881,7 +881,7 @@ static int ds_ioctl(struct inode * inode, struct file * file,
         mutex_lock(&s->skt_mutex);
         pcmcia_validate_mem(s);
         mutex_unlock(&s->skt_mutex);
-        ret = pccard_validate_cis(s, BIND_FN_ALL, &buf->cisinfo.Chains);
+        ret = pccard_validate_cis(s, &buf->cisinfo.Chains);
         break;
     case DS_SUSPEND_CARD:
         ret = pcmcia_suspend_card(s);
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index 909b1968098b..7039f3cf5b77 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -276,7 +276,7 @@ static int readable(struct pcmcia_socket *s, struct resource *res,
         s->cis_mem.res = res;
         s->cis_virt = ioremap(res->start, s->map_size);
         if (s->cis_virt) {
-                ret = pccard_validate_cis(s, BIND_FN_ALL, count);
+                ret = pccard_validate_cis(s, count);
                 /* invalidate mapping and CIS cache */
                 iounmap(s->cis_virt);
                 s->cis_virt = NULL;
diff --git a/drivers/pcmcia/socket_sysfs.c b/drivers/pcmcia/socket_sysfs.c
index ff9a3bb3c88d..78d5aab542f7 100644
--- a/drivers/pcmcia/socket_sysfs.c
+++ b/drivers/pcmcia/socket_sysfs.c
@@ -300,7 +300,7 @@ static ssize_t pccard_show_cis(struct kobject *kobj,
 
                 if (!(s->state & SOCKET_PRESENT))
                         return -ENODEV;
-                if (pccard_validate_cis(s, BIND_FN_ALL, &chains))
+                if (pccard_validate_cis(s, &chains))
                         return -EIO;
                 if (!chains)
                         return -ENODATA;