Put generic_show_options read access to s_options under rcu_read_lock,
split save_mount_options() into "we are setting it the first time"
(uses in foo_fill_super()) and "we are relacing and freeing the old one",
synchronize_rcu() before kfree() in the latter.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
isdn: document Kernel CAPI driver interface
Create a file Documentation/isdn/INTERFACE.CAPI describing the
interface between the kernel CAPI subsystem and ISDN device drivers,
analogous to the existing Documentation/isdn/INTERFACE for the old
isdn4linux subsystem. Also add kerneldoc comments to the exported
functions in drivers/isdn/capi/kcapi.c.
Impact: Documentation
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: Karsten Keil <keil@b1-systems.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wireless USB endpoint state has a sequence number and a current
window and not just a single toggle bit. So allow HCDs to provide a
endpoint_reset method and call this or clear the software toggles as
required (after a clear halt, set configuration etc.).
usb_settoggle() and friends are then HCD internal and are moved into
core/hcd.h and all device drivers call usb_reset_endpoint() instead.
If the device endpoint state has been reset (with a clear halt) but
the host endpoint state has not then subsequent data transfers will
not complete. The device will only work again after it is reset or
disconnected.
Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When the device is disconnected, the dev structure goes away, so
trying to report another error via dev_printk is bound to oops.
To avoid that, first check whether the device is still connected
and return quietly if it isn't.
Impact: error handling
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Tested-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
The tasklets for isochronous data transfer need to run within 8 msec
to avoid over/underruns, so schedule them with high priority to fix
reported issues with occasional over/underruns.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
struct tty_operations::proc_fops took it's place and there is one less
create_proc_read_entry() user now!
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.
We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.
But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.
->read_proc/->write_proc were just fixed to not require ->owner for
protection.
rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.
Removing ->owner will also make PDE smaller.
So, let's nuke it.
Kudos to Jeff Layton for reminding about this, let's say, oversight.
http://bugzilla.kernel.org/show_bug.cgi?id=12454
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
It doesn't change the semantics, but it looks like
the logical 'or' was meant to be used here.
Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This helps the code look more consistent and cleaner.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Every USB transfer buffer has to be allocated individually by kmalloc.
Impact: bugfix, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Tested-by: Kolja Waschk <kawk@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
A number of functions in the usb_gigaset module will return -EINVAL if
CONFIG_GIGASET_UNDOCREQ is not set. Make these return -ENOTTY as it's
more specific and it might make it easier to see (from userspace) why
these functions actually fail.
Impact: some error return codes changed
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Streamline dependencies and remove some obsolete or redundant comments
in the Gigaset ISDN driver's Kconfig file. In particular, remove the
strong warning against the GIGASET_UNDOCREQ option, as in seven years
of existence, the code in question has never been reported to cause
any harm.
Impact: Kconfig cleanup, no functional change
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: Make symbols static.
Fix this sparse warnings:
drivers/isdn/hardware/eicon/message.c:1197:6: warning: symbol 'connect_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1414:6: warning: symbol 'connect_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1570:6: warning: symbol 'connect_a_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1576:6: warning: symbol 'disconnect_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1631:6: warning: symbol 'disconnect_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1658:6: warning: symbol 'listen_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1707:6: warning: symbol 'info_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1816:6: warning: symbol 'info_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1822:6: warning: symbol 'alert_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:1852:6: warning: symbol 'facility_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:2602:6: warning: symbol 'facility_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:2608:6: warning: symbol 'connect_b3_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:2842:6: warning: symbol 'connect_b3_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:2957:6: warning: symbol 'connect_b3_a_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:2977:6: warning: symbol 'disconnect_b3_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3033:6: warning: symbol 'disconnect_b3_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3089:6: warning: symbol 'data_b3_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3166:6: warning: symbol 'data_b3_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3199:6: warning: symbol 'reset_b3_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3240:6: warning: symbol 'reset_b3_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3264:6: warning: symbol 'connect_b3_t90_a_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3298:6: warning: symbol 'select_b_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8692:6: warning: symbol 'sig_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8792:6: warning: symbol 'send_data' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this sparse warning:
drivers/isdn/hardware/eicon/debug.c:1201:32: warning: cast truncates bits from constant value (1000 becomes 0)
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: Move declarations to a header file.
Fix this sparse warning:
drivers/isdn/hisax/callc.c:24:12: warning: symbol 'lli_revision' was not declared. Should it be static?
drivers/isdn/hisax/config.c:84:12: warning: symbol 'CardType' was not declared. Should it be static?
drivers/isdn/hisax/config.c:362:5: warning: symbol 'nrcards' was not declared. Should it be static?
drivers/isdn/hisax/isdnl1.c:21:12: warning: symbol 'l1_revision' was not declared. Should it be static?
drivers/isdn/hisax/isdnl2.c:22:12: warning: symbol 'l2_revision' was not declared. Should it be static?
drivers/isdn/hisax/isdnl3.c:22:12: warning: symbol 'l3_revision' was not declared. Should it be static?
drivers/isdn/hisax/tei.c:23:12: warning: symbol 'tei_revision' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: Rename local variable 'c' to 't'.
Fix this sparse warning:
drivers/isdn/act2000/act2000_isa.c:260:70: warning: symbol 'c' shadows an earlier one
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Impact: Attribute functions with __acquires(...) resp. __releases(...).
Fix this sparse warnings:
drivers/isdn/capi/kcapi_proc.c:241:13: warning: context imbalance in 'capi_driver_start' - wrong count at exit
drivers/isdn/capi/kcapi_proc.c:252:13: warning: context imbalance in 'capi_driver_stop' - unexpected unlock
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove some pointless conditionals before kfree_skb().
Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trivial cleanup, list_del(); list_add_tail() is equivalent
to list_move_tail(). Semantic patch for coccinelle can be
found at www.cccmz.de/~snakebyte/list_move_tail.spatch
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Acked-by: Karsten Keil <kkeil@novell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix isdn/sc/shmem.c printk format warning:
drivers/isdn/sc/shmem.c:57: warning: format '%d' expects type 'int', but argument 3 has type 'size_t'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiffies are unsigned long, make sure we fit in jiffies store variable
on archs with bits per long > 32.
Patch suggested by Jiri Slaby.
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this sparse warnings:
drivers/isdn/mISDN/clock.c:44:1: warning: symbol 'iclock_lock' was not declared. Should it be static?
drivers/isdn/mISDN/clock.c:45:9: warning: symbol 'iclock_count' was not declared. Should it be static?
drivers/isdn/mISDN/clock.c:46:17: warning: symbol 'iclock_tv' was not declared. Should it be static?
drivers/isdn/mISDN/clock.c:47:9: warning: symbol 'iclock_tv_valid' was not declared. Should it be static?
drivers/isdn/mISDN/clock.c:48:20: warning: symbol 'iclock_current' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this sparse warnings:
drivers/isdn/hardware/mISDN/hfcpci.c:59:19: warning: symbol 'hfc_tl' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcpci.c:60:9: warning: symbol 'hfc_jiffies' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.h:201:6: warning: symbol 'conf_str' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.h:319:12: warning: symbol 'HFC_TE_LAYER1_STATES' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.h:331:12: warning: symbol 'HFC_NT_LAYER1_STATES' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.c:38:12: warning: symbol 'hfcsusb_rev' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.c:978:1: warning: symbol 'fill_isoc_urb' was not declared. Should it be static?
drivers/isdn/hardware/mISDN/hfcsusb.c:1724:1: warning: symbol 'setup_hfcsusb' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Error handling code following a kmalloc should free the allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,l;
position p1,p2;
expression *ptr != NULL;
@@
(
if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S
|
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
)
<... when != x
when != if (...) { <+...x...+> }
x->f = E
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The following patch fixes a warning caused by a missing ifdef in
isdn_ppp.c. A function was defined, but never used if CONFIG_IPPP_FILTER
was not defined.
The warning was: 'get_filter' defined but not used
Patch is against 2.6.28.1
Signed-off-by: Daniele Venzano <venza@brownhat.org>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Minor cleanups, either made possible or obvious after commit d700555 (I4l:
convert to net_device_ops).
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
When an i4l ppp interface is shut down (e.g. with /sbin/ifdown ippp0) a
scary warning is logged:
isdn_free_channel: called with invalid drv(-1) or channel(-1)
This warning is caused by isdn_net_unbind_channel(), which always calls
isdn_free_channel() even if isdn_net_local->isdn_device and
isdn_net_local->isdn_channel are (still) in a perfectly acceptable
default state, so let's not do that.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is not buggy due to plain luck as there is only one entry currently
in the element_attributes.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Karsten Keil <kkeil@suse.de>
In each case, if the NULL test is necessary, then the dereference should be
moved below the NULL test.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E
when != i
if (E == NULL) S
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Nothing is broken because of this - currently.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
In each case, if the NULL test is necessary, then the dereference should be
moved below the NULL test.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E
when != i
if (E == NULL) S
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Enable support for USB ISDN TAs with Cologne Chip AG's
HFC-S USB ISDN Controller.
Signed-off-by: Martin Bachem <m.bachem@gmx.de>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Fix kernel crash when doing hardware conference with more than two members.
Removed DTMF threshold notice when debugging is disabled.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Add missing release function of ec-devices. Each device require a relase
function now. All destruction (memory and list entry) must be done within
the given release function of device, rather than after unregistering device.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
- Poll-timer can now be set from 8 to 256 samples, depending on your kernel.
- If default or 128 is used, the normal controller's clock is used as before.
Usage: modprobe hfcpci poll=XXX
- Added some debug code for dsp buffer size. (CMX_DELAY_DEBUG)
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Correct busy device detection.
This fix belongs to last commit.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Added GETPEER operation.
Socket now checks if device is already busy at a differen mode.
Signed-off-by: Andreas Eversberg <andreas@eversberg.eu>
Signed-off-by: Karsten Keil <kkeil@suse.de>
Martin Olsson