b43legacy: Fix sparse warnings

Sparse yields the following warnings for b43legacy:

  CHECK   drivers/net/wireless/b43legacy/phy.c
drivers/net/wireless/b43legacy/phy.c:1304:31: warning: potentially expensive pointer subtraction
drivers/net/wireless/b43legacy/phy.c:1304:31: warning: potentially expensive pointer subtraction
drivers/net/wireless/b43legacy/phy.c:1304:31: warning: potentially expensive pointer subtraction
  CHECK   drivers/net/wireless/b43legacy/debugfs.c
drivers/net/wireless/b43legacy/debugfs.c:243:9: warning: memset with byte count of 131072

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 3 insertions, 5 deletions

diff --git a/drivers/net/wireless/b43legacy/debugfs.c b/drivers/net/wireless/b43legacy/debugfs.c
index 03ce0821a60e..1f85ac569fec 100644
--- a/drivers/net/wireless/b43legacy/debugfs.c
+++ b/drivers/net/wireless/b43legacy/debugfs.c
@@ -211,7 +211,7 @@ static ssize_t b43legacy_debugfs_read(struct file *file, char __user *userbuf,
         struct b43legacy_dfs_file *dfile;
         ssize_t uninitialized_var(ret);
         char *buf;
-        const size_t bufsize = 1024 * 128;
+        const size_t bufsize = 1024 * 16; /* 16 KiB buffer */
         const size_t buforder = get_order(bufsize);
         int err = 0;
 
diff --git a/drivers/net/wireless/b43legacy/phy.c b/drivers/net/wireless/b43legacy/phy.c
index 4c9442b16f3f..11319ec2d64a 100644
--- a/drivers/net/wireless/b43legacy/phy.c
+++ b/drivers/net/wireless/b43legacy/phy.c
@@ -1296,12 +1296,10 @@ void b43legacy_lo_write(struct b43legacy_wldev *dev,
         /* Sanity check. */
         if (pair->low < -8 || pair->low > 8 ||
             pair->high < -8 || pair->high > 8) {
-                struct b43legacy_phy *phy = &dev->phy;
                 b43legacydbg(dev->wl,
                        "WARNING: Writing invalid LOpair "
-                       "(low: %d, high: %d, index: %lu)\n",
-                       pair->low, pair->high,
-                       (unsigned long)(pair - phy->_lo_pairs));
+                       "(low: %d, high: %d)\n",
+                       pair->low, pair->high);
                 dump_stack();
         }
 #endif