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prism54: remove questionable down_interruptible usage 

Reviewing the semaphore usage I noticed these down_interruptible calls.  Most
of these aren't returning anything, so a caller can't tell if the operation
completed or not.  prism54_wpa_bss_ie_get() returns zero, but it's treated as
the function failing which doesn't seem correct.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Daniel Walker 2007-12-21 20:16:15 -08:00 committed by David S. Miller
parent 772353d849
commit 27ae4d4328
1 changed files with 4 additions and 8 deletions
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12
drivers/net/wireless/prism54/isl_ioctl.c
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@ -165,8 +165,7 @@ prism54_update_stats(struct work_struct *work)
struct obj_bss bss, *bss2;
union oid_res_t r;
if (down_interruptible(&priv->stats_sem))
return;
down(&priv->stats_sem);
/* Noise floor.
* I'm not sure if the unit is dBm.
@ -1793,8 +1792,7 @@ prism54_clear_mac(struct islpci_acl *acl)
struct list_head *ptr, *next;
struct mac_entry *entry;
if (down_interruptible(&acl->sem))
return;
down(&acl->sem);
if (acl->size == 0) {
up(&acl->sem);
@ -2116,8 +2114,7 @@ prism54_wpa_bss_ie_add(islpci_private *priv, u8 *bssid,
if (wpa_ie_len > MAX_WPA_IE_LEN)
wpa_ie_len = MAX_WPA_IE_LEN;
if (down_interruptible(&priv->wpa_sem))
return;
down(&priv->wpa_sem);
/* try to use existing entry */
list_for_each(ptr, &priv->bss_wpa_list) {
@ -2178,8 +2175,7 @@ prism54_wpa_bss_ie_get(islpci_private *priv, u8 *bssid, u8 *wpa_ie)
struct islpci_bss_wpa_ie *bss = NULL;
size_t len = 0;
if (down_interruptible(&priv->wpa_sem))
return 0;
down(&priv->wpa_sem);
list_for_each(ptr, &priv->bss_wpa_list) {
bss = list_entry(ptr, struct islpci_bss_wpa_ie, list);