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
  ...

3 files changed, 6 insertions, 6 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index cc54bdb5c712..2c8cfa27909d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -7004,9 +7004,9 @@ static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
 /**
  * megasas_mgmt_poll -  char node "poll" entry point
  * */
-static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
+static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
 {
-	unsigned int mask;
+	__poll_t mask;
 	unsigned long flags;
 
 	poll_wait(file, &megasas_poll_wait, wait);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
index b4c374b08e5e..537de1b7e8e5 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c
@@ -534,7 +534,7 @@ _ctl_fasync(int fd, struct file *filep, int mode)
  * @wait -
  *
  */
-static unsigned int
+static __poll_t
 _ctl_poll(struct file *filep, poll_table *wait)
 {
 	struct MPT3SAS_ADAPTER *ioc;
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index f098877eed4a..0c434453aab3 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1140,10 +1140,10 @@ static long sg_compat_ioctl(struct file *filp, unsigned int cmd_in, unsigned lon
 }
 #endif
 
-static unsigned int
+static __poll_t
 sg_poll(struct file *filp, poll_table * wait)
 {
-	unsigned int res = 0;
+	__poll_t res = 0;
 	Sg_device *sdp;
 	Sg_fd *sfp;
 	Sg_request *srp;
@@ -1174,7 +1174,7 @@ sg_poll(struct file *filp, poll_table * wait)
 	} else if (count < SG_MAX_QUEUE)
 		res |= POLLOUT | POLLWRNORM;
 	SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
-				      "sg_poll: res=0x%x\n", (int) res));
+				      "sg_poll: res=0x%x\n", (__force u32) res));
 	return res;
 }