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authorJiri Slaby <jirislaby@gmail.com>2007-10-18 03:06:25 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-18 14:37:27 -0700
commit8cf5a8c5729116d0d60815393ec9f1c0f0bc2df7 (patch)
treed5a8c13703b02c8d6f05a3cb3e7273991071244f /drivers/char
parent95e0791480af8347460d0cbe34a46eca7e77d0d0 (diff)
downloadop-kernel-dev-8cf5a8c5729116d0d60815393ec9f1c0f0bc2df7.zip
op-kernel-dev-8cf5a8c5729116d0d60815393ec9f1c0f0bc2df7.tar.gz
Char: rocket, switch sleep_on to completion
rocket, switch sleep_on to completion - sleep_on is deprecated and racy, use completion instead - also check retval of interruptible function and return ERESTARTSYS eventually Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/rocket.c12
-rw-r--r--drivers/char/rocket_int.h7
2 files changed, 9 insertions, 10 deletions
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 56cbba7..d790b08 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -84,6 +84,7 @@
#include <linux/mutex.h>
#include <linux/ioport.h>
#include <linux/delay.h>
+#include <linux/completion.h>
#include <linux/wait.h>
#include <linux/pci.h>
#include <asm/uaccess.h>
@@ -650,7 +651,7 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev)
info->closing_wait = 3000;
info->close_delay = 50;
init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
+ init_completion(&info->close_wait);
info->flags &= ~ROCKET_MODE_MASK;
switch (pc104[board][line]) {
case 422:
@@ -878,7 +879,8 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
if (tty_hung_up_p(filp))
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
if (info->flags & ROCKET_CLOSING) {
- interruptible_sleep_on(&info->close_wait);
+ if (wait_for_completion_interruptible(&info->close_wait))
+ return -ERESTARTSYS;
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
}
@@ -983,8 +985,10 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
return -ENOMEM;
if (info->flags & ROCKET_CLOSING) {
- interruptible_sleep_on(&info->close_wait);
+ retval = wait_for_completion_interruptible(&info->close_wait);
free_page(page);
+ if (retval)
+ return retval;
return ((info->flags & ROCKET_HUP_NOTIFY) ? -EAGAIN : -ERESTARTSYS);
}
@@ -1176,7 +1180,7 @@ static void rp_close(struct tty_struct *tty, struct file *filp)
}
info->flags &= ~(ROCKET_INITIALIZED | ROCKET_CLOSING | ROCKET_NORMAL_ACTIVE);
tty->closing = 0;
- wake_up_interruptible(&info->close_wait);
+ complete_all(&info->close_wait);
atomic_dec(&rp_num_ports_open);
#ifdef ROCKET_DEBUG_OPEN
diff --git a/drivers/char/rocket_int.h b/drivers/char/rocket_int.h
index b4c53df..55b8f2d 100644
--- a/drivers/char/rocket_int.h
+++ b/drivers/char/rocket_int.h
@@ -1163,13 +1163,8 @@ struct r_port {
int read_status_mask;
int cps;
-#ifdef DECLARE_WAITQUEUE
wait_queue_head_t open_wait;
- wait_queue_head_t close_wait;
-#else
- struct wait_queue *open_wait;
- struct wait_queue *close_wait;
-#endif
+ struct completion close_wait;
spinlock_t slock;
struct mutex write_mtx;
};
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