bitops: rename for_each_bit() to for_each_set_bit()

Rename for_each_bit to for_each_set_bit in the kernel source tree.  To
permit for_each_clear_bit(), should that ever be added.

The patch includes a macro to map the old for_each_bit() onto the new
for_each_set_bit().  This is a (very) temporary thing to ease the migration.

[akpm@linux-foundation.org: add temporary for_each_bit()]
Suggested-by: Alexey Dobriyan <adobriyan@gmail.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

18 files changed, 26 insertions, 24 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 641ccb9dddbc..b1fbdeecf6c9 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -676,7 +676,7 @@ static int x86_schedule_events(struct cpu_hw_events *cpuc, int n, int *assign)
                         if (c->weight != w)
                                 continue;
 
-                        for_each_bit(j, c->idxmsk, X86_PMC_IDX_MAX) {
+                        for_each_set_bit(j, c->idxmsk, X86_PMC_IDX_MAX) {
                                 if (!test_bit(j, used_mask))
                                         break;
                         }
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index cf6590cf4a5f..977e7544738c 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -757,7 +757,7 @@ again:
 
         inc_irq_stat(apic_perf_irqs);
         ack = status;
-        for_each_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
+        for_each_set_bit(bit, (unsigned long *)&status, X86_PMC_IDX_MAX) {
                 struct perf_event *event = cpuc->events[bit];
 
                 clear_bit(bit, (unsigned long *) &status);
diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c
index 5d0e42b263df..af14c9a5b8d4 100644
--- a/drivers/dma/ioat/dma.c
+++ b/drivers/dma/ioat/dma.c
@@ -71,7 +71,7 @@ static irqreturn_t ioat_dma_do_interrupt(int irq, void *data)
         }
 
         attnstatus = readl(instance->reg_base + IOAT_ATTNSTATUS_OFFSET);
-        for_each_bit(bit, &attnstatus, BITS_PER_LONG) {
+        for_each_set_bit(bit, &attnstatus, BITS_PER_LONG) {
                 chan = ioat_chan_by_index(instance, bit);
                 tasklet_schedule(&chan->cleanup_task);
         }
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 4ee4c8367a3f..3ad1eeb49609 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -219,7 +219,7 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
                 if (pending == 0)
                         continue;
 
-                for_each_bit(offset, &pending, PL061_GPIO_NR)
+                for_each_set_bit(offset, &pending, PL061_GPIO_NR)
                         generic_handle_irq(pl061_to_irq(&chip->gc, offset));
         }
         desc->chip->unmask(irq);
diff --git a/drivers/gpio/timbgpio.c b/drivers/gpio/timbgpio.c
index d941f45fe557..4ecba6e5a32d 100644
--- a/drivers/gpio/timbgpio.c
+++ b/drivers/gpio/timbgpio.c
@@ -175,7 +175,7 @@ static void timbgpio_irq(unsigned int irq, struct irq_desc *desc)
         ipr = ioread32(tgpio->membase + TGPIO_IPR);
         iowrite32(ipr, tgpio->membase + TGPIO_ICR);
 
-        for_each_bit(offset, &ipr, tgpio->gpio.ngpio)
+        for_each_set_bit(offset, &ipr, tgpio->gpio.ngpio)
                 generic_handle_irq(timbgpio_to_irq(&tgpio->gpio, offset));
 }
 
diff --git a/drivers/i2c/busses/i2c-designware.c b/drivers/i2c/busses/i2c-designware.c
index 9e18ef97f156..3e72b69aa7f8 100644
--- a/drivers/i2c/busses/i2c-designware.c
+++ b/drivers/i2c/busses/i2c-designware.c
@@ -497,13 +497,13 @@ static int i2c_dw_handle_tx_abort(struct dw_i2c_dev *dev)
         int i;
 
         if (abort_source & DW_IC_TX_ABRT_NOACK) {
-                for_each_bit(i, &abort_source, ARRAY_SIZE(abort_sources))
+                for_each_set_bit(i, &abort_source, ARRAY_SIZE(abort_sources))
                         dev_dbg(dev->dev,
                                 "%s: %s\n", __func__, abort_sources[i]);
                 return -EREMOTEIO;
         }
 
-        for_each_bit(i, &abort_source, ARRAY_SIZE(abort_sources))
+        for_each_set_bit(i, &abort_source, ARRAY_SIZE(abort_sources))
                 dev_err(dev->dev, "%s: %s\n", __func__, abort_sources[i]);
 
         if (abort_source & DW_IC_TX_ARB_LOST)
diff --git a/drivers/mfd/htc-egpio.c b/drivers/mfd/htc-egpio.c
index aa266e1f69b2..addb846c1e34 100644
--- a/drivers/mfd/htc-egpio.c
+++ b/drivers/mfd/htc-egpio.c
@@ -108,7 +108,7 @@ static void egpio_handler(unsigned int irq, struct irq_desc *desc)
         ack_irqs(ei);
         /* Process all set pins. */
         readval &= ei->irqs_enabled;
-        for_each_bit(irqpin, &readval, ei->nirqs) {
+        for_each_set_bit(irqpin, &readval, ei->nirqs) {
                 /* Run irq handler */
                 pr_debug("got IRQ %d\n", irqpin);
                 irq = ei->irq_start + irqpin;
diff --git a/drivers/misc/sgi-xp/xpnet.c b/drivers/misc/sgi-xp/xpnet.c
index 16f0abda1423..57b152f8d1b9 100644
--- a/drivers/misc/sgi-xp/xpnet.c
+++ b/drivers/misc/sgi-xp/xpnet.c
@@ -475,7 +475,7 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 
         if (skb->data[0] == 0xff) {
                 /* we are being asked to broadcast to all partitions */
-                for_each_bit(dest_partid, xpnet_broadcast_partitions,
+                for_each_set_bit(dest_partid, xpnet_broadcast_partitions,
                              xp_max_npartitions) {
 
                         xpnet_send(skb, queued_msg, start_addr, end_addr,
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 6aa526ee9096..61a7b4351e78 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -998,7 +998,7 @@ static int gfar_probe(struct of_device *ofdev,
         }
 
         /* Need to reverse the bit maps as  bit_map's MSB is q0
-         * but, for_each_bit parses from right to left, which
+         * but, for_each_set_bit parses from right to left, which
          * basically reverses the queue numbers */
         for (i = 0; i< priv->num_grps; i++) {
                 priv->gfargrp[i].tx_bit_map = reverse_bitmap(
@@ -1011,7 +1011,7 @@ static int gfar_probe(struct of_device *ofdev,
          * also assign queues to groups */
         for (grp_idx = 0; grp_idx < priv->num_grps; grp_idx++) {
                 priv->gfargrp[grp_idx].num_rx_queues = 0x0;
-                for_each_bit(i, &priv->gfargrp[grp_idx].rx_bit_map,
+                for_each_set_bit(i, &priv->gfargrp[grp_idx].rx_bit_map,
                                 priv->num_rx_queues) {
                         priv->gfargrp[grp_idx].num_rx_queues++;
                         priv->rx_queue[i]->grp = &priv->gfargrp[grp_idx];
@@ -1019,7 +1019,7 @@ static int gfar_probe(struct of_device *ofdev,
                         rqueue = rqueue | ((RQUEUE_EN0 | RQUEUE_EX0) >> i);
                 }
                 priv->gfargrp[grp_idx].num_tx_queues = 0x0;
-                for_each_bit (i, &priv->gfargrp[grp_idx].tx_bit_map,
+                for_each_set_bit(i, &priv->gfargrp[grp_idx].tx_bit_map,
                                 priv->num_tx_queues) {
                         priv->gfargrp[grp_idx].num_tx_queues++;
                         priv->tx_queue[i]->grp = &priv->gfargrp[grp_idx];
@@ -1709,7 +1709,7 @@ void gfar_configure_coalescing(struct gfar_private *priv,
 
         if (priv->mode == MQ_MG_MODE) {
                 baddr = &regs->txic0;
-                for_each_bit (i, &tx_mask, priv->num_tx_queues) {
+                for_each_set_bit(i, &tx_mask, priv->num_tx_queues) {
                         if (likely(priv->tx_queue[i]->txcoalescing)) {
                                 gfar_write(baddr + i, 0);
                                 gfar_write(baddr + i, priv->tx_queue[i]->txic);
@@ -1717,7 +1717,7 @@ void gfar_configure_coalescing(struct gfar_private *priv,
                 }
 
                 baddr = &regs->rxic0;
-                for_each_bit (i, &rx_mask, priv->num_rx_queues) {
+                for_each_set_bit(i, &rx_mask, priv->num_rx_queues) {
                         if (likely(priv->rx_queue[i]->rxcoalescing)) {
                                 gfar_write(baddr + i, 0);
                                 gfar_write(baddr + i, priv->rx_queue[i]->rxic);
@@ -2607,7 +2607,7 @@ static int gfar_poll(struct napi_struct *napi, int budget)
                 budget_per_queue = left_over_budget/num_queues;
                 left_over_budget = 0;
 
-                for_each_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) {
+                for_each_set_bit(i, &gfargrp->rx_bit_map, priv->num_rx_queues) {
                         if (test_bit(i, &serviced_queues))
                                 continue;
                         rx_queue = priv->rx_queue[i];
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 45e3532b166f..684af371462d 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -1050,7 +1050,7 @@ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter)
          */
         for (v_idx = 0; v_idx < q_vectors; v_idx++) {
                 q_vector = adapter->q_vector[v_idx];
-                /* XXX for_each_bit(...) */
+                /* XXX for_each_set_bit(...) */
                 r_idx = find_first_bit(q_vector->rxr_idx,
                                        adapter->num_rx_queues);
 
diff --git a/drivers/net/ixgbevf/ixgbevf_main.c b/drivers/net/ixgbevf/ixgbevf_main.c
index 235b5fd4b8d4..ca653c49b765 100644
--- a/drivers/net/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ixgbevf/ixgbevf_main.c
@@ -751,7 +751,7 @@ static void ixgbevf_configure_msix(struct ixgbevf_adapter *adapter)
          */
         for (v_idx = 0; v_idx < q_vectors; v_idx++) {
                 q_vector = adapter->q_vector[v_idx];
-                /* XXX for_each_bit(...) */
+                /* XXX for_each_set_bit(...) */
                 r_idx = find_first_bit(q_vector->rxr_idx,
                                        adapter->num_rx_queues);
 
diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
index 8a964f130367..a6452af9c6c5 100644
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ b/drivers/net/wireless/ath/ar9170/main.c
@@ -394,7 +394,7 @@ static void ar9170_tx_fake_ampdu_status(struct ar9170 *ar)
                 ieee80211_tx_status_irqsafe(ar->hw, skb);
         }
 
-        for_each_bit(i, &queue_bitmap, BITS_PER_BYTE) {
+        for_each_set_bit(i, &queue_bitmap, BITS_PER_BYTE) {
 #ifdef AR9170_QUEUE_STOP_DEBUG
                 printk(KERN_DEBUG "%s: wake queue %d\n",
                        wiphy_name(ar->hw->wiphy), i);
diff --git a/drivers/net/wireless/iwmc3200wifi/debugfs.c b/drivers/net/wireless/iwmc3200wifi/debugfs.c
index be992ca41cf1..c29c994de0e2 100644
--- a/drivers/net/wireless/iwmc3200wifi/debugfs.c
+++ b/drivers/net/wireless/iwmc3200wifi/debugfs.c
@@ -89,7 +89,7 @@ static int iwm_debugfs_dbg_modules_write(void *data, u64 val)
         for (i = 0; i < __IWM_DM_NR; i++)
                 iwm->dbg.dbg_module[i] = 0;
 
-        for_each_bit(bit, &iwm->dbg.dbg_modules, __IWM_DM_NR)
+        for_each_set_bit(bit, &iwm->dbg.dbg_modules, __IWM_DM_NR)
                 iwm->dbg.dbg_module[bit] = iwm->dbg.dbg_level;
 
         return 0;
diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index ad8f7eabb5aa..8456b4dbd146 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -1116,7 +1116,7 @@ static int iwm_ntf_stop_resume_tx(struct iwm_priv *iwm, u8 *buf,
                 return -EINVAL;
         }
 
-        for_each_bit(bit, (unsigned long *)&tid_msk, IWM_UMAC_TID_NR) {
+        for_each_set_bit(bit, (unsigned long *)&tid_msk, IWM_UMAC_TID_NR) {
                 tid_info = &sta_info->tid_info[bit];
 
                 mutex_lock(&tid_info->mutex);
diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 21f9e71223ca..a6467f3d262e 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -457,7 +457,7 @@ static int ocfs2_recover_local_quota_file(struct inode *lqinode,
                         break;
                 }
                 dchunk = (struct ocfs2_local_disk_chunk *)hbh->b_data;
-                for_each_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) {
+                for_each_set_bit(bit, rchunk->rc_bitmap, ol_chunk_entries(sb)) {
                         qbh = NULL;
                         status = ocfs2_read_quota_block(lqinode,
                                                 ol_dqblk_block(sb, chunk, bit),
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 25b8b2f33ae9..b79389879238 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -16,11 +16,13 @@
  */
 #include <asm/bitops.h>
 
-#define for_each_bit(bit, addr, size) \
+#define for_each_set_bit(bit, addr, size) \
         for ((bit) = find_first_bit((addr), (size)); \
              (bit) < (size); \
              (bit) = find_next_bit((addr), (size), (bit) + 1))
 
+/* Temporary */
+#define for_each_bit(bit, addr, size) for_each_set_bit(bit, addr, size)
 
 static __inline__ int get_bitmask_order(unsigned int count)
 {
diff --git a/kernel/sched_cpupri.c b/kernel/sched_cpupri.c
index eeb3506c4834..82095bf2099f 100644
--- a/kernel/sched_cpupri.c
+++ b/kernel/sched_cpupri.c
@@ -47,7 +47,7 @@ static int convert_prio(int prio)
 }
 
 #define for_each_cpupri_active(array, idx)                    \
-        for_each_bit(idx, array, CPUPRI_NR_PRIORITIES)
+        for_each_set_bit(idx, array, CPUPRI_NR_PRIORITIES)
 
 /**
  * cpupri_find - find the best (lowest-pri) CPU in the system
diff --git a/sound/soc/codecs/uda1380.c b/sound/soc/codecs/uda1380.c
index a2763c2e7348..9cd0a66b7663 100644
--- a/sound/soc/codecs/uda1380.c
+++ b/sound/soc/codecs/uda1380.c
@@ -137,7 +137,7 @@ static void uda1380_flush_work(struct work_struct *work)
 {
         int bit, reg;
 
-        for_each_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
+        for_each_set_bit(bit, &uda1380_cache_dirty, UDA1380_CACHEREGNUM - 0x10) {
                 reg = 0x10 + bit;
                 pr_debug("uda1380: flush reg %x val %x:\n", reg,
                                 uda1380_read_reg_cache(uda1380_codec, reg));