This doesn't happen with the usbip virtual hci module, but another
module wanting to interface with this user space code could cause a
seg-fault by sending data without newlines.
Signed-off-by: Christopher Harvey <charvey@matrox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
stub_shutdown_connection() and vhci_shutdown_connection() use
task_is_dead() before kthread_stop(). This buys nothing and wrong.
kthread_stop() is fine even if this thread is dead. However, if it
is dead nothing protects this task_struct, we shouldn't touch this
memory.
Change the code to do the necessary get_task_struct/put_task_struct.
This patch assumes that
- xxx_shutdown_connection() is always called, so we can't
leak the task_struct.
- kthread_stop_put() can't be called twice on the same task.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Tobias Klauser <tklauser@distanz.ch>
Cc: Matt Mooney <mfm@muteddisk.com>,
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This was done to resolve some merge issues with the following files that
had changed in both branches:
drivers/staging/rtl8712/rtl871x_sta_mgt.c
drivers/staging/tidspbridge/rmgr/drv_interface.c
drivers/staging/zcache/zcache-main.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function usbip_pad_iso never returns anything but 0 (success).
Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The stub_probe function can be called as soon as the stub_driver is
registered. This can lead to the busid_table_lock being used before it
is initialized. Moved calling the init_busid_table function (which
initalizes this spinlock) to be called earlier in the init function to
prevent this from happening.
Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Removed remnants of old function definitions which have since been
removed in earlier cleanup work.
Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The usbip_xmit function supported sending and receiving data, however
the sending part of the function was never used/executed. Renamed the
function to usbip_recv, and removed the unused code.
Signed-off-by: Bart Westgeest <bart@elbrys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Interrupts must be disabled prior to calling usb_hcd_unlink_urb_from_ep.
If interrupts are not disabled, it can potentially lead to a deadlock.
The deadlock is readily reproduceable on a slower (ARM based) device
such as the TI Pandaboard.
Signed-off-by: Bart Westgeest <bart@elbrys.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This 2nd batch of implicit module.h users only appeared when we
removed the unnecessary module.h from include/linux/miscdevice.h
[The 1st batch is already present in Greg's staging tree.]
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Lots of drivers have in the past expected the presence of basic things
like THIS_MODULE and EXPORT_SYMBOL. With the header cleanup, they wont
have these. Call out the include explicitly.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Revert changes in definitions that were submitted on May 11 2011 and
committed on June 7 2011. No reason for the change in these values was
given in the patch comment, it broke compatibility with older
versions, and was difficult to detect by the simultaneous move of the
lines of code.
Signed-off-by: Alexander Thomas <alexander.thomas@esaturnus.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Lots of people expect module.h to just "be there" without
any #include effort. But we are crushing that. So fix those
files in staging relying on implicit module.h presence.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* git://git.kernel.org/pub/scm/linux/kernel/git/lwfinger/r8192E: (61 commits)
staging: rtl8192e: Fix compilation warnings
staging: rtl8192e: Fix unload/reload problem
staging: rtl8192e: Remove dead code associated with CONFIG_RTL_RFKILL
staging: rtl8192e: Remove conditional code associated with EEPROM_OLD_FORMAT_SUPPORT
staging: rtl8192e: Remove dead code associated with EFUSE_REPG_WORKAROUND
staging: rtl8192e: Remove LOOP_TEST as parameter
staging: rtl8192e: Remove dead code associated with CONFIG_FW_SETCHAN
staging: rtl8192e: Remove dead code associated with CONFIG_RTLWIFI_DEBUGFS
staging: rtl8192e: Remove dead code associated with _RTL8192_EXT_PATCH_
staging: rtl8192e: Remove ifdefs for CONFIG_RTLLIB_DEBUG
staging: rtl8192e: Remove dead code associated with RTL819x_DEBUG
staging: rtl8192e: Remove dead code associated with _ENABLE_SW_BEACON
staging: rtl8192e: Remove dead code associated with CONFIG_CRYPTO_HMAC
staging: rtl8192e: Remove dead code associated with CONFIG_BT_30
staging: rtl8192e: Remove dead code associated with ENABLE_NULL_PT_DEBUG
staging: rtl8192e: Remove dead code associated with CONFIG_64BIT_DMA
staging: rtl8192e: Remove dead code associated with CONFIG_RTLLIB_CRYPT_TKIP
staging: rtl8192e: Remove dead code associated with IRQF_SHARED
staging: rtl8192e: Remove dead code associated with CONFIG_CFG_80211
staging: rtl8192e: Remove dead code associated with BUILT_IN_CRYPTO
...
Test the just-initialized value rather than some other one.
The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
identifier x,y,f!={PTR_ERR,ERR_PTR,ERR_CAST};
statement S;
@@
x = f(...);
(
if (\(x == NULL\|IS_ERR(x)\)) S
|
*if (\(y == NULL\|IS_ERR(y)\))
{ ... when != x
return ...; }
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: David Chang <dchang@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
mkdir() could fail, so we should check its return value.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix brace positioning and spaces at the start of lines in order to
comply with the kernel coding style.
Signed-off-by: Akshay Joshi <me@akshayjoshi.com>
Acked-by: matt mooney <mfm@muteddisk.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
