The patch titled
Char: stallion, alloc tty before pci devices init
has been added to the -mm tree. Its filename is
char-stallion-alloc-tty-before-pci-devices-init.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Char: stallion, alloc tty before pci devices init
From: Jiri Slaby <jirislaby@xxxxxxxxx>
this causes oops, because pci probe function calls tty_register_device for
each device found. Thanks to Ingo.
Signed-off-by: Jiri Slaby <jirislaby@xxxxxxxxx>
Cc: "Ingo Korb" <ingo@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/char/stallion.c | 73 +++++++++++++++++---------------------
1 files changed, 34 insertions(+), 39 deletions(-)
diff -puN drivers/char/stallion.c~char-stallion-alloc-tty-before-pci-devices-init drivers/char/stallion.c
--- a/drivers/char/stallion.c~char-stallion-alloc-tty-before-pci-devices-init
+++ a/drivers/char/stallion.c
@@ -4710,6 +4710,29 @@ static int __init stallion_module_init(v
spin_lock_init(&stallion_lock);
spin_lock_init(&brd_lock);
+ stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
+ if (!stl_serial) {
+ retval = -ENOMEM;
+ goto err;
+ }
+
+ stl_serial->owner = THIS_MODULE;
+ stl_serial->driver_name = stl_drvname;
+ stl_serial->name = "ttyE";
+ stl_serial->major = STL_SERIALMAJOR;
+ stl_serial->minor_start = 0;
+ stl_serial->type = TTY_DRIVER_TYPE_SERIAL;
+ stl_serial->subtype = SERIAL_TYPE_NORMAL;
+ stl_serial->init_termios = stl_deftermios;
+ stl_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ tty_set_operations(stl_serial, &stl_ops);
+
+ retval = tty_register_driver(stl_serial);
+ if (retval) {
+ printk("STALLION: failed to register serial driver\n");
+ goto err_frtty;
+ }
+
/*
* Find any dynamically supported boards. That is via module load
* line options.
@@ -4739,13 +4762,9 @@ static int __init stallion_module_init(v
/* this has to be _after_ isa finding because of locking */
retval = pci_register_driver(&stl_pcidriver);
- if (retval && stl_nrbrds == 0)
- goto err;
-
- stl_serial = alloc_tty_driver(STL_MAXBRDS * STL_MAXPORTS);
- if (!stl_serial) {
- retval = -ENOMEM;
- goto err_pcidr;
+ if (retval && stl_nrbrds == 0) {
+ printk(KERN_ERR "STALLION: can't register pci driver\n");
+ goto err_unrtty;
}
/*
@@ -4756,43 +4775,18 @@ static int __init stallion_module_init(v
printk("STALLION: failed to register serial board device\n");
stallion_class = class_create(THIS_MODULE, "staliomem");
- if (IS_ERR(stallion_class)) {
- retval = PTR_ERR(stallion_class);
- goto err_reg;
- }
+ if (IS_ERR(stallion_class))
+ printk("STALLION: failed to create class\n");
for (i = 0; i < 4; i++)
class_device_create(stallion_class, NULL,
MKDEV(STL_SIOMEMMAJOR, i), NULL,
"staliomem%d", i);
- stl_serial->owner = THIS_MODULE;
- stl_serial->driver_name = stl_drvname;
- stl_serial->name = "ttyE";
- stl_serial->major = STL_SERIALMAJOR;
- stl_serial->minor_start = 0;
- stl_serial->type = TTY_DRIVER_TYPE_SERIAL;
- stl_serial->subtype = SERIAL_TYPE_NORMAL;
- stl_serial->init_termios = stl_deftermios;
- stl_serial->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
- tty_set_operations(stl_serial, &stl_ops);
-
- retval = tty_register_driver(stl_serial);
- if (retval) {
- printk("STALLION: failed to register serial driver\n");
- goto err_clsdev;
- }
-
return 0;
-err_clsdev:
- for (i = 0; i < 4; i++)
- class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i));
- class_destroy(stallion_class);
-err_reg:
- unregister_chrdev(STL_SIOMEMMAJOR, "staliomem");
+err_unrtty:
+ tty_unregister_driver(stl_serial);
+err_frtty:
put_tty_driver(stl_serial);
-err_pcidr:
- pci_unregister_driver(&stl_pcidriver);
- stl_free_isabrds();
err:
return retval;
}
@@ -4821,8 +4815,6 @@ static void __exit stallion_module_exit(
tty_unregister_device(stl_serial,
brdp->brdnr * STL_MAXPORTS + j);
}
- tty_unregister_driver(stl_serial);
- put_tty_driver(stl_serial);
for (i = 0; i < 4; i++)
class_device_destroy(stallion_class, MKDEV(STL_SIOMEMMAJOR, i));
@@ -4834,6 +4826,9 @@ static void __exit stallion_module_exit(
pci_unregister_driver(&stl_pcidriver);
stl_free_isabrds();
+
+ tty_unregister_driver(stl_serial);
+ put_tty_driver(stl_serial);
}
module_init(stallion_module_init);
_
Patches currently in -mm which might be from jirislaby@xxxxxxxxx are
ide-ide-generic-add-another-device-exception.patch
rocketc-fix-unchecked-mutex_lock_interruptible.patch
char-n_hdlc-allow-restartsys-retval-of-tty-write.patch
char-mxser_new-fix-sparse-warning.patch
char-tty_ioctl-use-wait_event_interruptible_timeout.patch
char-tty_ioctl-little-whitespace-cleanup.patch
char-genrtc-use-wait_event_interruptible.patch
char-n_r3964-use-wait_event_interruptible.patch
char-ip2-use-msleep-for-sleeping.patch
drop-an-empty-isicomh-from-being-exported-to-user-space.patch
char-cyclades-add-firmware-loading.patch
char-cyclades-fix-sparse-warning.patch
char-isicom-cleanup-locking.patch
char-isicom-del_timer-at-exit.patch
char-isicom-proper-variables-types.patch
char-moxa-eliminate-busy-waiting.patch
char-specialix-remove-busy-waiting.patch
char-riscom8-eliminate-busy-loop.patch
char-vt-use-kzalloc.patch
char-vt-use-array_size.patch
char-kconfig-mxser_new-remove-experimental-comment.patch
char-stallion-dont-fail-with-less-than-max-panels.patch
char-stallion-alloc-tty-before-pci-devices-init.patch
char-stallion-proper-fail-return-values.patch
char-stallion-remove-user-class-report-request.patch
shrink_slab-handle-bad-shrinkers.patch
-
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