* [PATCH 1/3] Char: mxser_new, do not null driver_data
@ 2007-01-23 14:42 Jiri Slaby
2007-01-23 14:42 ` [PATCH 2/3] Char: mxser_new, lock count and flags Jiri Slaby
2007-01-23 14:42 ` [PATCH 3/3] Char: mxser_new, fix sparse warning Jiri Slaby
0 siblings, 2 replies; 3+ messages in thread
From: Jiri Slaby @ 2007-01-23 14:42 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, osv
mxser_new, do not null driver_data
driver_data are initialzed to NULL from tty layer, no need to do it in the
driver. In this case it cases oops, since driver_data may be NULL for a
short while for another closing process.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <osv@javad.com>
---
commit f49b6914c3113f930a31ff7b8f811744f2d8f339
tree d4f8355eb12a89f779dc4b85e7a908b9e80e88d3
parent 2826e3a35f34046890c84a77bc2784a184f9bf6a
author Jiri Slaby <jirislaby@gmail.com> Sat, 20 Jan 2007 17:00:12 +0059
committer Jiri Slaby <jirislaby@gmail.com> Sat, 20 Jan 2007 17:00:12 +0059
drivers/char/mxser_new.c | 3 ---
1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 4c80549..1c8e00c 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -927,9 +927,6 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
struct mxser_port *info;
int retval, line;
- /* initialize driver_data in case something fails */
- tty->driver_data = NULL;
-
line = tty->index;
if (line == MXSER_PORTS)
return 0;
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 2/3] Char: mxser_new, lock count and flags
2007-01-23 14:42 [PATCH 1/3] Char: mxser_new, do not null driver_data Jiri Slaby
@ 2007-01-23 14:42 ` Jiri Slaby
2007-01-23 14:42 ` [PATCH 3/3] Char: mxser_new, fix sparse warning Jiri Slaby
1 sibling, 0 replies; 3+ messages in thread
From: Jiri Slaby @ 2007-01-23 14:42 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, osv
mxser_new, lock count and flags
Both open count and INITIALIZED flag should be changed under lock.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <osv@javad.com>
---
commit 76b3ee2d5737395df62553cec1b8193252476147
tree dfc50c164ddde6b73a954f694dfdcb98ed921629
parent f49b6914c3113f930a31ff7b8f811744f2d8f339
author Jiri Slaby <jirislaby@gmail.com> Sat, 20 Jan 2007 17:18:24 +0059
committer Jiri Slaby <jirislaby@gmail.com> Sat, 20 Jan 2007 17:18:24 +0059
drivers/char/mxser_new.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index 1c8e00c..d52ecff 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -853,9 +853,9 @@ static int mxser_startup(struct mxser_port *info)
* and set the speed of the serial port
*/
mxser_change_speed(info, NULL);
+ info->flags |= ASYNC_INITIALIZED;
spin_unlock_irqrestore(&info->slock, flags);
- info->flags |= ASYNC_INITIALIZED;
return 0;
}
@@ -925,6 +925,7 @@ static void mxser_shutdown(struct mxser_port *info)
static int mxser_open(struct tty_struct *tty, struct file *filp)
{
struct mxser_port *info;
+ unsigned long flags;
int retval, line;
line = tty->index;
@@ -941,7 +942,9 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
/*
* Start up serial port
*/
+ spin_lock_irqsave(&info->slock, flags);
info->count++;
+ spin_unlock_irqrestore(&info->slock, flags);
retval = mxser_startup(info);
if (retval)
return retval;
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 3/3] Char: mxser_new, fix sparse warning
2007-01-23 14:42 [PATCH 1/3] Char: mxser_new, do not null driver_data Jiri Slaby
2007-01-23 14:42 ` [PATCH 2/3] Char: mxser_new, lock count and flags Jiri Slaby
@ 2007-01-23 14:42 ` Jiri Slaby
1 sibling, 0 replies; 3+ messages in thread
From: Jiri Slaby @ 2007-01-23 14:42 UTC (permalink / raw)
To: Andrew Morton; +Cc: linux-kernel, osv
mxser_new, fix sparse warning
Feed NULL instead of 0 where pointer is expected.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <osv@javad.com>
---
commit e87e9f65c3ac51d447cfe435217032a07f7a56e0
tree fbb8597542ed5919d3fae6b9ab45865e0659e922
parent 76b3ee2d5737395df62553cec1b8193252476147
author Jiri Slaby <jirislaby@gmail.com> Tue, 23 Jan 2007 01:43:13 +0059
committer Jiri Slaby <jirislaby@gmail.com> Tue, 23 Jan 2007 01:43:13 +0059
drivers/char/mxser_new.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index d52ecff..9af07e4 100644
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -1708,7 +1708,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
info->speed = speed;
spin_lock_irqsave(&info->slock, flags);
- mxser_change_speed(info, 0);
+ mxser_change_speed(info, NULL);
spin_unlock_irqrestore(&info->slock, flags);
return 0;
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2007-01-23 14:42 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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