1 files changed, 26 insertions, 25 deletions

diff --git a/drivers/isdn/gigaset/isocdata.c b/drivers/isdn/gigaset/isocdata.c
index e0505f238807..e30a7773f93c 100644
--- a/drivers/isdn/gigaset/isocdata.c
+++ b/drivers/isdn/gigaset/isocdata.c
@@ -23,9 +23,9 @@
  */
 void gigaset_isowbuf_init(struct isowbuf_t *iwb, unsigned char idle)
 {
-        atomic_set(&iwb->read, 0);
-        atomic_set(&iwb->nextread, 0);
-        atomic_set(&iwb->write, 0);
+        iwb->read = 0;
+        iwb->nextread = 0;
+        iwb->write = 0;
         atomic_set(&iwb->writesem, 1);
         iwb->wbits = 0;
         iwb->idle = idle;
@@ -39,8 +39,8 @@ static inline int isowbuf_freebytes(struct isowbuf_t *iwb)
 {
         int read, write, freebytes;
 
-        read = atomic_read(&iwb->read);
-        write = atomic_read(&iwb->write);
+        read = iwb->read;
+        write = iwb->write;
         if ((freebytes = read - write) > 0) {
                 /* no wraparound: need padding space within regular area */
                 return freebytes - BAS_OUTBUFPAD;
@@ -62,7 +62,7 @@ static inline int isowbuf_poscmp(struct isowbuf_t *iwb, int a, int b)
         int read;
         if (a == b)
                 return 0;
-        read = atomic_read(&iwb->read);
+        read = iwb->read;
         if (a < b) {
                 if (a < read && read <= b)
                         return +1;
@@ -91,18 +91,18 @@ static inline int isowbuf_startwrite(struct isowbuf_t *iwb)
 #ifdef CONFIG_GIGASET_DEBUG
         gig_dbg(DEBUG_ISO,
                 "%s: acquired iso write semaphore, data[write]=%02x, nbits=%d",
-                __func__, iwb->data[atomic_read(&iwb->write)], iwb->wbits);
+                __func__, iwb->data[iwb->write], iwb->wbits);
 #endif
         return 1;
 }
 
 /* finish writing
- * release the write semaphore and update the maximum buffer fill level
+ * release the write semaphore
  * returns the current write position
  */
 static inline int isowbuf_donewrite(struct isowbuf_t *iwb)
 {
-        int write = atomic_read(&iwb->write);
+        int write = iwb->write;
         atomic_inc(&iwb->writesem);
         return write;
 }
@@ -116,7 +116,7 @@ static inline int isowbuf_donewrite(struct isowbuf_t *iwb)
  */
 static inline void isowbuf_putbits(struct isowbuf_t *iwb, u32 data, int nbits)
 {
-        int write = atomic_read(&iwb->write);
+        int write = iwb->write;
         data <<= iwb->wbits;
         data |= iwb->data[write];
         nbits += iwb->wbits;
@@ -128,7 +128,7 @@ static inline void isowbuf_putbits(struct isowbuf_t *iwb, u32 data, int nbits)
         }
         iwb->wbits = nbits;
         iwb->data[write] = data & 0xff;
-        atomic_set(&iwb->write, write);
+        iwb->write = write;
 }
 
 /* put final flag on HDLC bitstream
@@ -142,7 +142,7 @@ static inline void isowbuf_putflag(struct isowbuf_t *iwb)
         /* add two flags, thus reliably covering one byte */
         isowbuf_putbits(iwb, 0x7e7e, 8);
         /* recover the idle flag byte */
-        write = atomic_read(&iwb->write);
+        write = iwb->write;
         iwb->idle = iwb->data[write];
         gig_dbg(DEBUG_ISO, "idle fill byte %02x", iwb->idle);
         /* mask extraneous bits in buffer */
@@ -160,8 +160,8 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
         int read, write, limit, src, dst;
         unsigned char pbyte;
 
-        read = atomic_read(&iwb->nextread);
-        write = atomic_read(&iwb->write);
+        read = iwb->nextread;
+        write = iwb->write;
         if (likely(read == write)) {
                 /* return idle frame */
                 return read < BAS_OUTBUFPAD ?
@@ -176,7 +176,7 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
                 err("invalid size %d", size);
                 return -EINVAL;
         }
-        src = atomic_read(&iwb->read);
+        src = iwb->read;
         if (unlikely(limit > BAS_OUTBUFSIZE + BAS_OUTBUFPAD ||
                      (read < src && limit >= src))) {
                 err("isoc write buffer frame reservation violated");
@@ -191,7 +191,8 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
                         if (!isowbuf_startwrite(iwb))
                                 return -EBUSY;
                         /* write position could have changed */
-                        if (limit >= (write = atomic_read(&iwb->write))) {
+                        write = iwb->write;
+                        if (limit >= write) {
                                 pbyte = iwb->data[write]; /* save
                                                              partial byte */
                                 limit = write + BAS_OUTBUFPAD;
@@ -213,7 +214,7 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
                                         __func__, pbyte, limit);
                                 iwb->data[limit] = pbyte; /* restore
                                                              partial byte */
-                                atomic_set(&iwb->write, limit);
+                                iwb->write = limit;
                         }
                         isowbuf_donewrite(iwb);
                 }
@@ -233,7 +234,7 @@ int gigaset_isowbuf_getbytes(struct isowbuf_t *iwb, int size)
                         limit = src;
                 }
         }
-        atomic_set(&iwb->nextread, limit);
+        iwb->nextread = limit;
         return read;
 }
 
@@ -477,7 +478,7 @@ static inline int trans_buildframe(struct isowbuf_t *iwb,
         unsigned char c;
 
         if (unlikely(count <= 0))
-                return atomic_read(&iwb->write); /* better ideas? */
+                return iwb->write;
 
         if (isowbuf_freebytes(iwb) < count ||
             !isowbuf_startwrite(iwb)) {
@@ -486,13 +487,13 @@ static inline int trans_buildframe(struct isowbuf_t *iwb,
         }
 
         gig_dbg(DEBUG_STREAM, "put %d bytes", count);
-        write = atomic_read(&iwb->write);
+        write = iwb->write;
         do {
                 c = bitrev8(*in++);
                 iwb->data[write++] = c;
                 write %= BAS_OUTBUFSIZE;
         } while (--count > 0);
-        atomic_set(&iwb->write, write);
+        iwb->write = write;
         iwb->idle = c;
 
         return isowbuf_donewrite(iwb);
@@ -947,8 +948,8 @@ void gigaset_isoc_input(struct inbuf_t *inbuf)
         unsigned tail, head, numbytes;
         unsigned char *src;
 
-        head = atomic_read(&inbuf->head);
-        while (head != (tail = atomic_read(&inbuf->tail))) {
+        head = inbuf->head;
+        while (head != (tail = inbuf->tail)) {
                 gig_dbg(DEBUG_INTR, "buffer state: %u -> %u", head, tail);
                 if (head > tail)
                         tail = RBUFSIZE;
@@ -956,7 +957,7 @@ void gigaset_isoc_input(struct inbuf_t *inbuf)
                 numbytes = tail - head;
                 gig_dbg(DEBUG_INTR, "processing %u bytes", numbytes);
 
-                if (atomic_read(&cs->mstate) == MS_LOCKED) {
+                if (cs->mstate == MS_LOCKED) {
                         gigaset_dbg_buffer(DEBUG_LOCKCMD, "received response",
                                            numbytes, src);
                         gigaset_if_receive(inbuf->cs, src, numbytes);
@@ -970,7 +971,7 @@ void gigaset_isoc_input(struct inbuf_t *inbuf)
                 if (head == RBUFSIZE)
                         head = 0;
                 gig_dbg(DEBUG_INTR, "setting head to %u", head);
-                atomic_set(&inbuf->head, head);
+                inbuf->head = head;
         }
 }