Merge branch 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull poll annotations from Al Viro:
 "This introduces a __bitwise type for POLL### bitmap, and propagates
  the annotations through the tree. Most of that stuff is as simple as
  'make ->poll() instances return __poll_t and do the same to local
  variables used to hold the future return value'.

  Some of the obvious brainos found in process are fixed (e.g. POLLIN
  misspelled as POLL_IN). At that point the amount of sparse warnings is
  low and most of them are for genuine bugs - e.g. ->poll() instance
  deciding to return -EINVAL instead of a bitmap. I hadn't touched those
  in this series - it's large enough as it is.

  Another problem it has caught was eventpoll() ABI mess; select.c and
  eventpoll.c assumed that corresponding POLL### and EPOLL### were
  equal. That's true for some, but not all of them - EPOLL### are
  arch-independent, but POLL### are not.

  The last commit in this series separates userland POLL### values from
  the (now arch-independent) kernel-side ones, converting between them
  in the few places where they are copied to/from userland. AFAICS, this
  is the least disruptive fix preserving poll(2) ABI and making epoll()
  work on all architectures.

  As it is, it's simply broken on sparc - try to give it EPOLLWRNORM and
  it will trigger only on what would've triggered EPOLLWRBAND on other
  architectures. EPOLLWRBAND and EPOLLRDHUP, OTOH, are never triggered
  at all on sparc. With this patch they should work consistently on all
  architectures"

* 'misc.poll' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits)
  make kernel-side POLL... arch-independent
  eventpoll: no need to mask the result of epi_item_poll() again
  eventpoll: constify struct epoll_event pointers
  debugging printk in sg_poll() uses %x to print POLL... bitmap
  annotate poll(2) guts
  9p: untangle ->poll() mess
  ->si_band gets POLL... bitmap stored into a user-visible long field
  ring_buffer_poll_wait() return value used as return value of ->poll()
  the rest of drivers/*: annotate ->poll() instances
  media: annotate ->poll() instances
  fs: annotate ->poll() instances
  ipc, kernel, mm: annotate ->poll() instances
  net: annotate ->poll() instances
  apparmor: annotate ->poll() instances
  tomoyo: annotate ->poll() instances
  sound: annotate ->poll() instances
  acpi: annotate ->poll() instances
  crypto: annotate ->poll() instances
  block: annotate ->poll() instances
  x86: annotate ->poll() instances
  ...

25 files changed, 49 insertions, 49 deletions

diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c
index 4490a69..a12b955 100644
--- a/sound/core/compress_offload.c
+++ b/sound/core/compress_offload.c
@@ -396,7 +396,7 @@ static int snd_compr_mmap(struct file *f, struct vm_area_struct *vma)
 	return -ENXIO;
 }
 
-static inline int snd_compr_get_poll(struct snd_compr_stream *stream)
+static __poll_t snd_compr_get_poll(struct snd_compr_stream *stream)
 {
 	if (stream->direction == SND_COMPRESS_PLAYBACK)
 		return POLLOUT | POLLWRNORM;
@@ -404,12 +404,12 @@ static inline int snd_compr_get_poll(struct snd_compr_stream *stream)
 		return POLLIN | POLLRDNORM;
 }
 
-static unsigned int snd_compr_poll(struct file *f, poll_table *wait)
+static __poll_t snd_compr_poll(struct file *f, poll_table *wait)
 {
 	struct snd_compr_file *data = f->private_data;
 	struct snd_compr_stream *stream;
 	size_t avail;
-	int retval = 0;
+	__poll_t retval = 0;
 
 	if (snd_BUG_ON(!data))
 		return POLLERR;
diff --git a/sound/core/control.c b/sound/core/control.c
index 56b3e2d..494389f 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -1666,9 +1666,9 @@ static ssize_t snd_ctl_read(struct file *file, char __user *buffer,
       	return result > 0 ? result : err;
 }
 
-static unsigned int snd_ctl_poll(struct file *file, poll_table * wait)
+static __poll_t snd_ctl_poll(struct file *file, poll_table * wait)
 {
-	unsigned int mask;
+	__poll_t mask;
 	struct snd_ctl_file *ctl;
 
 	ctl = file->private_data;
diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c
index 8faae3d..cbda5c8 100644
--- a/sound/core/hwdep.c
+++ b/sound/core/hwdep.c
@@ -177,7 +177,7 @@ static int snd_hwdep_release(struct inode *inode, struct file * file)
 	return err;
 }
 
-static unsigned int snd_hwdep_poll(struct file * file, poll_table * wait)
+static __poll_t snd_hwdep_poll(struct file * file, poll_table * wait)
 {
 	struct snd_hwdep *hw = file->private_data;
 	if (hw->ops.poll)
diff --git a/sound/core/info.c b/sound/core/info.c
index bcf6a48..aa86f3f 100644
--- a/sound/core/info.c
+++ b/sound/core/info.c
@@ -203,11 +203,11 @@ static ssize_t snd_info_entry_write(struct file *file, const char __user *buffer
 	return size;
 }
 
-static unsigned int snd_info_entry_poll(struct file *file, poll_table *wait)
+static __poll_t snd_info_entry_poll(struct file *file, poll_table *wait)
 {
 	struct snd_info_private_data *data = file->private_data;
 	struct snd_info_entry *entry = data->entry;
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 
 	if (entry->c.ops->poll)
 		return entry->c.ops->poll(entry,
diff --git a/sound/core/init.c b/sound/core/init.c
index 168ae03..8753440 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -344,7 +344,7 @@ static int snd_disconnect_release(struct inode *inode, struct file *file)
 	panic("%s(%p, %p) failed!", __func__, inode, file);
 }
 
-static unsigned int snd_disconnect_poll(struct file * file, poll_table * wait)
+static __poll_t snd_disconnect_poll(struct file * file, poll_table * wait)
 {
 	return POLLERR | POLLNVAL;
 }
diff --git a/sound/core/oss/pcm_oss.c b/sound/core/oss/pcm_oss.c
index e8b1987..3ebba9c 100644
--- a/sound/core/oss/pcm_oss.c
+++ b/sound/core/oss/pcm_oss.c
@@ -2686,10 +2686,10 @@ static int snd_pcm_oss_capture_ready(struct snd_pcm_substream *substream)
 						runtime->oss.period_frames;
 }
 
-static unsigned int snd_pcm_oss_poll(struct file *file, poll_table * wait)
+static __poll_t snd_pcm_oss_poll(struct file *file, poll_table * wait)
 {
 	struct snd_pcm_oss_file *pcm_oss_file;
-	unsigned int mask;
+	__poll_t mask;
 	struct snd_pcm_substream *psubstream = NULL, *csubstream = NULL;
 	
 	pcm_oss_file = file->private_data;
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 484a18d..51104df 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -3135,12 +3135,12 @@ static ssize_t snd_pcm_writev(struct kiocb *iocb, struct iov_iter *from)
 	return result;
 }
 
-static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait)
+static __poll_t snd_pcm_playback_poll(struct file *file, poll_table * wait)
 {
 	struct snd_pcm_file *pcm_file;
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_runtime *runtime;
-        unsigned int mask;
+        __poll_t mask;
 	snd_pcm_uframes_t avail;
 
 	pcm_file = file->private_data;
@@ -3174,12 +3174,12 @@ static unsigned int snd_pcm_playback_poll(struct file *file, poll_table * wait)
 	return mask;
 }
 
-static unsigned int snd_pcm_capture_poll(struct file *file, poll_table * wait)
+static __poll_t snd_pcm_capture_poll(struct file *file, poll_table * wait)
 {
 	struct snd_pcm_file *pcm_file;
 	struct snd_pcm_substream *substream;
 	struct snd_pcm_runtime *runtime;
-        unsigned int mask;
+        __poll_t mask;
 	snd_pcm_uframes_t avail;
 
 	pcm_file = file->private_data;
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c
index f055ca1..fae2131 100644
--- a/sound/core/rawmidi.c
+++ b/sound/core/rawmidi.c
@@ -1366,11 +1366,11 @@ static ssize_t snd_rawmidi_write(struct file *file, const char __user *buf,
 	return result;
 }
 
-static unsigned int snd_rawmidi_poll(struct file *file, poll_table * wait)
+static __poll_t snd_rawmidi_poll(struct file *file, poll_table * wait)
 {
 	struct snd_rawmidi_file *rfile;
 	struct snd_rawmidi_runtime *runtime;
-	unsigned int mask;
+	__poll_t mask;
 
 	rfile = file->private_data;
 	if (rfile->input != NULL) {
diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c
index 8cdf489..5f64d0d 100644
--- a/sound/core/seq/oss/seq_oss.c
+++ b/sound/core/seq/oss/seq_oss.c
@@ -59,7 +59,7 @@ static int odev_release(struct inode *inode, struct file *file);
 static ssize_t odev_read(struct file *file, char __user *buf, size_t count, loff_t *offset);
 static ssize_t odev_write(struct file *file, const char __user *buf, size_t count, loff_t *offset);
 static long odev_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
-static unsigned int odev_poll(struct file *file, poll_table * wait);
+static __poll_t odev_poll(struct file *file, poll_table * wait);
 
 
 /*
@@ -197,7 +197,7 @@ static long odev_ioctl_compat(struct file *file, unsigned int cmd,
 #define odev_ioctl_compat	NULL
 #endif
 
-static unsigned int
+static __poll_t
 odev_poll(struct file *file, poll_table * wait)
 {
 	struct seq_oss_devinfo *dp;
diff --git a/sound/core/seq/oss/seq_oss_device.h b/sound/core/seq/oss/seq_oss_device.h
index afa007c..2d0e9ea 100644
--- a/sound/core/seq/oss/seq_oss_device.h
+++ b/sound/core/seq/oss/seq_oss_device.h
@@ -124,7 +124,7 @@ void snd_seq_oss_release(struct seq_oss_devinfo *dp);
 int snd_seq_oss_ioctl(struct seq_oss_devinfo *dp, unsigned int cmd, unsigned long arg);
 int snd_seq_oss_read(struct seq_oss_devinfo *dev, char __user *buf, int count);
 int snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, struct file *opt);
-unsigned int snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
+__poll_t snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait);
 
 void snd_seq_oss_reset(struct seq_oss_devinfo *dp);
 
diff --git a/sound/core/seq/oss/seq_oss_rw.c b/sound/core/seq/oss/seq_oss_rw.c
index 6a7b6ac..c538e78 100644
--- a/sound/core/seq/oss/seq_oss_rw.c
+++ b/sound/core/seq/oss/seq_oss_rw.c
@@ -196,10 +196,10 @@ insert_queue(struct seq_oss_devinfo *dp, union evrec *rec, struct file *opt)
  * select / poll
  */
   
-unsigned int
+__poll_t
 snd_seq_oss_poll(struct seq_oss_devinfo *dp, struct file *file, poll_table * wait)
 {
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 
 	/* input */
 	if (dp->readq && is_read_mode(dp->file_mode)) {
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index d019134..b611dee 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1087,10 +1087,10 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
 /*
  * handle polling
  */
-static unsigned int snd_seq_poll(struct file *file, poll_table * wait)
+static __poll_t snd_seq_poll(struct file *file, poll_table * wait)
 {
 	struct snd_seq_client *client = file->private_data;
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 
 	/* check client structures are in place */
 	if (snd_BUG_ON(!client))
diff --git a/sound/core/timer.c b/sound/core/timer.c
index ee09dac..da05e31 100644
--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -2072,9 +2072,9 @@ static ssize_t snd_timer_user_read(struct file *file, char __user *buffer,
 	return result > 0 ? result : err;
 }
 
-static unsigned int snd_timer_user_poll(struct file *file, poll_table * wait)
+static __poll_t snd_timer_user_poll(struct file *file, poll_table * wait)
 {
-        unsigned int mask;
+        __poll_t mask;
         struct snd_timer_user *tu;
 
         tu = file->private_data;
diff --git a/sound/firewire/bebob/bebob_hwdep.c b/sound/firewire/bebob/bebob_hwdep.c
index 2b367c2..83e7918 100644
--- a/sound/firewire/bebob/bebob_hwdep.c
+++ b/sound/firewire/bebob/bebob_hwdep.c
@@ -53,11 +53,11 @@ hwdep_read(struct snd_hwdep *hwdep, char __user *buf,  long count,
 	return count;
 }
 
-static unsigned int
+static __poll_t
 hwdep_poll(struct snd_hwdep *hwdep, struct file *file, poll_table *wait)
 {
 	struct snd_bebob *bebob = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &bebob->hwdep_wait, wait);
 
diff --git a/sound/firewire/dice/dice-hwdep.c b/sound/firewire/dice/dice-hwdep.c
index a4dc02a..7a8af0f 100644
--- a/sound/firewire/dice/dice-hwdep.c
+++ b/sound/firewire/dice/dice-hwdep.c
@@ -52,11 +52,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_dice *dice = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &dice->hwdep_wait, wait);
 
diff --git a/sound/firewire/digi00x/digi00x-hwdep.c b/sound/firewire/digi00x/digi00x-hwdep.c
index 463c6b8..a084c2a 100644
--- a/sound/firewire/digi00x/digi00x-hwdep.c
+++ b/sound/firewire/digi00x/digi00x-hwdep.c
@@ -60,11 +60,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf,  long count,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_dg00x *dg00x = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &dg00x->hwdep_wait, wait);
 
diff --git a/sound/firewire/fireface/ff-hwdep.c b/sound/firewire/fireface/ff-hwdep.c
index 3ee04b0..68e273f 100644
--- a/sound/firewire/fireface/ff-hwdep.c
+++ b/sound/firewire/fireface/ff-hwdep.c
@@ -52,11 +52,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf,  long count,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_ff *ff = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &ff->hwdep_wait, wait);
 
diff --git a/sound/firewire/fireworks/fireworks_hwdep.c b/sound/firewire/fireworks/fireworks_hwdep.c
index a3a3a16..e0eff93 100644
--- a/sound/firewire/fireworks/fireworks_hwdep.c
+++ b/sound/firewire/fireworks/fireworks_hwdep.c
@@ -184,11 +184,11 @@ end:
 	return count;
 }
 
-static unsigned int
+static __poll_t
 hwdep_poll(struct snd_hwdep *hwdep, struct file *file, poll_table *wait)
 {
 	struct snd_efw *efw = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &efw->hwdep_wait, wait);
 
diff --git a/sound/firewire/motu/motu-hwdep.c b/sound/firewire/motu/motu-hwdep.c
index b87ccb6..7b6a086 100644
--- a/sound/firewire/motu/motu-hwdep.c
+++ b/sound/firewire/motu/motu-hwdep.c
@@ -59,11 +59,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_motu *motu = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &motu->hwdep_wait, wait);
 
diff --git a/sound/firewire/oxfw/oxfw-hwdep.c b/sound/firewire/oxfw/oxfw-hwdep.c
index ff2687a..6c1828a 100644
--- a/sound/firewire/oxfw/oxfw-hwdep.c
+++ b/sound/firewire/oxfw/oxfw-hwdep.c
@@ -52,11 +52,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf,  long count,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_oxfw *oxfw = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &oxfw->hwdep_wait, wait);
 
diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c
index 8c4437d..37b2164 100644
--- a/sound/firewire/tascam/tascam-hwdep.c
+++ b/sound/firewire/tascam/tascam-hwdep.c
@@ -50,11 +50,11 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
 	return count;
 }
 
-static unsigned int hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
+static __poll_t hwdep_poll(struct snd_hwdep *hwdep, struct file *file,
 			       poll_table *wait)
 {
 	struct snd_tscm *tscm = hwdep->private_data;
-	unsigned int events;
+	__poll_t events;
 
 	poll_wait(file, &tscm->hwdep_wait, wait);
 
diff --git a/sound/oss/dmasound/dmasound_core.c b/sound/oss/dmasound/dmasound_core.c
index fb3bbce..6b57f8a 100644
--- a/sound/oss/dmasound/dmasound_core.c
+++ b/sound/oss/dmasound/dmasound_core.c
@@ -670,9 +670,9 @@ static ssize_t sq_write(struct file *file, const char __user *src, size_t uLeft,
 	return uUsed < 0? uUsed: uWritten;
 }
 
-static unsigned int sq_poll(struct file *file, struct poll_table_struct *wait)
+static __poll_t sq_poll(struct file *file, struct poll_table_struct *wait)
 {
-	unsigned int mask = 0;
+	__poll_t mask = 0;
 	int retVal;
 	
 	if (write_sq.locked == 0) {
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index e6359d3..05ccc7f 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -240,7 +240,7 @@ static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
 	return err < 0 ? err : count;
 }
 
-static unsigned int snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
+static __poll_t snd_usb_sbrc_hwdep_poll(struct snd_hwdep *hw, struct file *file,
 					    poll_table *wait)
 {
 	struct usb_mixer_interface *mixer = hw->private_data;
diff --git a/sound/usb/usx2y/us122l.c b/sound/usb/usx2y/us122l.c
index 159da1f..509680d 100644
--- a/sound/usb/usx2y/us122l.c
+++ b/sound/usb/usx2y/us122l.c
@@ -271,12 +271,12 @@ out:
 	return err;
 }
 
-static unsigned int usb_stream_hwdep_poll(struct snd_hwdep *hw,
+static __poll_t usb_stream_hwdep_poll(struct snd_hwdep *hw,
 					  struct file *file, poll_table *wait)
 {
 	struct us122l	*us122l = hw->private_data;
 	unsigned	*polled;
-	unsigned int	mask;
+	__poll_t	mask;
 
 	poll_wait(file, &us122l->sk.sleep, wait);
 
diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index f4b3cda..8b0a1ea 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -86,9 +86,9 @@ static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct v
 	return 0;
 }
 
-static unsigned int snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
+static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
 {
-	unsigned int	mask = 0;
+	__poll_t	mask = 0;
 	struct usX2Ydev	*us428 = hw->private_data;
 	struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
 	if (us428->chip_status & USX2Y_STAT_CHIP_HUP)