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2013-04-29mkcapflags.pl: convert to mkcapflags.shRob Landley3-50/+43
Generate asm-x86/cpufeature.h with posix-2008 commands instead of perl. Signed-off-by: Rob Landley <rob@landley.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Josh Boyer <jwboyer@redhat.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: David Howells <dhowell@redhat.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29fs/fscache/stats.c: fix memory leakAnurup m1-1/+1
There is a kernel memory leak observed when the proc file /proc/fs/fscache/stats is read. The reason is that in fscache_stats_open, single_open is called and the respective release function is not called during release. Hence fix with correct release function - single_release(). Addresses https://bugzilla.kernel.org/show_bug.cgi?id=57101 Signed-off-by: Anurup m <anurup.m@huawei.com> Cc: shyju pv <shyju.pv@huawei.com> Cc: Sanil kumar <sanil.kumar@huawei.com> Cc: Nataraj m <nataraj.m@huawei.com> Cc: Li Zefan <lizefan@huawei.com> Cc: David Howells <dhowells@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29drivers/video/mmp: remove legacy hw definitionsZhou Zhu1-478/+1
Removed legacy hw definitions in hw/mmp_ctrl.h. These definitions are for earlier soc versions and are not supported in this driver. Signed-off-by: Zhou Zhu <zzhu3@marvell.com> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: Lisa Du <cldu@marvell.com> Cc: Guoqing Li <ligq@marvell.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29drivers/video/ep93xx-fb.c: fix section mismatch and use module_platform_driverH Hartley Sweeten1-15/+3
Remove the __init tags from the ep93xxfb_calc_fbsize() and ep93xxfb_alloc_videomem() functions to fix the section mismatch warnings. Use module_platform_driver() to remove the init/exit boilerplate. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ryan Mallon <rmallon@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29drivers/video/exynos/exynos_mipi_dsi.c: convert to devm_ioremap_resource()Sachin Kamat1-4/+4
Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Donghwa Lee <dh09.lee@samsung.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29drivers/video: add Hyper-V Synthetic Video Frame Buffer DriverHaiyang Zhang4-0/+850
This is the driver for the Hyper-V Synthetic Video, which supports screen resolution up to Full HD 1920x1080 on Windows Server 2012 host, and 1600x1200 on Windows Server 2008 R2 or earlier. It also solves the double mouse cursor issue of the emulated video mode. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Cc: Olaf Hering <olaf@aepfle.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29drivers/video/console/fbcon_cw.c: fix compiler warning in cw_update_attrDevendra Naga1-2/+1
With make W=1 we get drivers/video/console/fbcon_cw.c: In function `cw_update_attr': drivers/video/console/fbcon_cw.c:30:8: warning: variable `t' set but not used [-Wunused-but-set-variable] fixed by removing as since its used nowhere Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29matroxfb: convert struct i2c_msg initialization to C99 formatShubhrajyoti Datta1-2/+14
Convert the struct i2c_msg initialization to C99 format. This makes maintaining and editing the code simpler. Also helps once other fields like transferred are added in future. Thanks to Julia Lawall for automating the conversion. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Julia Lawall <julia@diku.dk> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29kernel/audit_tree.c: tree will leak memory when failure occurs in audit_trim_trees()Chen Gang1-1/+1
audit_trim_trees() calls get_tree(). If a failure occurs we must call put_tree(). [akpm@linux-foundation.org: run put_tree() before mutex_lock() for small scalability improvement] Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29kernel/auditfilter.c: tree and watch will memory leak when failure occursChen Gang1-0/+4
In audit_data_to_entry() when a failure occurs we must check and free the tree and watch to avoid a memory leak. test: plan: test command: "auditctl -a exit,always -w /etc -F auid=-1" (on fedora17, need modify auditctl to let "-w /etc" has effect) running: under fedora17 x86_64, 2 CPUs 3.20GHz, 2.5GB RAM. let 15 auditctl processes continue running at the same time. monitor command: watch -d -n 1 "cat /proc/meminfo | awk '{print \$2}' \ | head -n 4 | xargs \ | awk '{print \"used \",\$1 - \$2 - \$3 - \$4}'" result: for original version: will use up all memory, within 3 hours. kill all auditctl, the memory still does not free. for new version (apply this patch): after 14 hours later, not find issues. Signed-off-by: Chen Gang <gang.chen@asianux.com> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29audit: remove unnecessary #if CONFIG_AUDITGao feng1-2/+0
The files which include kernel/audit.h are complied only when CONFIG_AUDIT is set. Just like audit_pid, there is no need to surround audit_ever_enabled with CONFIG_AUDIT. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29audit: remove duplicate export of audit_enabledGao feng1-1/+0
audit_enabled has already been exported in include/linux/audit.h. and kernel/audit.h includes include/linux/audit.h, no need to export aduit_enabled again in kernel/audit.h Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29audit: don't check if kauditd is valid every timeGao feng1-6/+6
We only need to check if kauditd is valid after we start it, if kauditd is invalid, we will set kauditd_task to NULL. So next time, we will start kauditd again. It means if kauditd_task is not NULL,it must be valid. Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> Cc: Eric Paris <eparis@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29kernel/auditsc.c: use kzalloc instead of kmalloc+memsetRakib Mullick1-10/+4
In audit_alloc_context() use kzalloc instead of kmalloc+memset. Also rename audit_zero_context() to audit_set_context(), to represent it's inner workings properly. [akpm@linux-foundation.org: remove audit_set_context() altogether - fold it into its caller] Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29kthread: kill task_get_live_kthread()Oleg Nesterov1-13/+7
task_get_live_kthread() looks confusing and unneeded. It does get_task_struct() but only kthread_stop() needs this, it can be called even if the calller doesn't have a reference when we know that this kthread can't exit until we do kthread_stop(). kthread_park() and kthread_unpark() do not need get_task_struct(), the callers already have the reference. And it can not help if we can race with the exiting kthread anyway, kthread_park() can hang forever in this case. Change kthread_park() and kthread_unpark() to use to_live_kthread(), change kthread_stop() to do get_task_struct() by hand and remove task_get_live_kthread(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29kthread: introduce to_live_kthread()Oleg Nesterov1-10/+16
"k->vfork_done != NULL" with a barrier() after to_kthread(k) in task_get_live_kthread(k) looks unclear, and sub-optimal because we load ->vfork_done twice. All we need is to ensure that we do not return to_kthread(NULL). Add a new trivial helper which loads/checks ->vfork_done once, this also looks more understandable. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Namhyung Kim <namhyung@kernel.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-28Linux 3.9Linus Torvalds1-1/+1
2013-04-27vm: add no-mmu vm_iomap_memory() stubLinus Torvalds1-0/+10
I think we could just move the full vm_iomap_memory() function into util.h or similar, but I didn't get any reply from anybody actually using nommu even to this trivial patch, so I'm not going to touch it any more than required. Here's the fairly minimal stub to make the nommu case at least potentially work. It doesn't seem like anybody cares, though. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-26efivars: only check for duplicates on the registered listMatt Fleming1-5/+7
variable_is_present() accesses '__efivars' directly, but when called via gsmi_init() Michel reports observing the following crash, BUG: unable to handle kernel NULL pointer dereference at (null) IP: variable_is_present+0x55/0x170 Call Trace: register_efivars+0x106/0x370 gsmi_init+0x2ad/0x3da do_one_initcall+0x3f/0x170 The reason for the crash is that '__efivars' hasn't been initialised nor has it been registered with register_efivars() by the time the google EFI SMI driver runs. The gsmi code uses its own struct efivars, and therefore, a different variable list. Fix the above crash by passing the registered struct efivars to variable_is_present(), so that we traverse the correct list. Reported-by: Michel Lespinasse <walken@google.com> Tested-by: Michel Lespinasse <walken@google.com> Cc: Mike Waychison <mikew@google.com> Cc: Matthew Garrett <matthew.garrett@nebula.com> Cc: Seiji Aguchi <seiji.aguchi@hds.com> Signed-off-by: Matt Fleming <matt.fleming@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-26pinctrl: move subsystem mutex to pinctrl_dev structPatrice Chotard5-164/+176
This mutex avoids deadlock in case of use of multiple pin controllers. Before this modification, by using a global mutex, deadlock appeared when, for example, a call to pinctrl_pins_show() locked the pinctrl_mutex, called the ops->pin_dbg_show of a particular pin controller. If this pin controller needs I2C access to retrieve configuration information and I2C driver is using pinctrl to drive its pins, a call to pinctrl_select_state() try to lock again pinctrl_mutex which leads to a deadlock. Notice that the mutex grab from the two direction functions was moved into pinctrl_gpio_direction(). For several cases, we can't replace pinctrl_mutex by pctldev->mutex, because at this stage, pctldev is not accessible : - pinctrl_get()/pinctrl_put() - pinctrl_register_maps() So add respectively pinctrl_list_mutex and pinctrl_maps_mutex in order to protect pinctrl_list and pinctrl_maps list instead. Reintroduce pinctrldev_list_mutex in find_pinctrl_by_of_node(), pinctrl_find_and_add_gpio_range() pinctrl_request_gpio(), pinctrl_free_gpio(), pinctrl_gpio_direction(), pinctrl_devices_show(), pinctrl_register() and pinctrl_unregister() to protect pinctrldev_list. Changes v2->v3: - Fix a missing EXPORT_SYMBOL_GPL() for pinctrl_select_state(). Changes v1->v2: - pinctrl_select_state_locked() is removed, all lock mechanism is located inside pinctrl_select_state(). When parsing the state->setting list, take the per-pin-controller driver lock. (Patrice). - Introduce pinctrldev_list_mutex to protect pinctrldev_list in all functions which parse or modify pictrldev_list. (Patrice). - move find_pinctrl_by_of_node() from pinctrl/devicetree.c to pinctrl/core.c in order to protect pinctrldev_list. (Patrice). - Sink mutex:es into some functions and remove some _locked variants down to where the lists are actually accessed to make things simpler. (Linus) - Drop *all* mutexes completely from pinctrl_lookup_state() and pinctrl_select_state() - no relevant mutex was taken and it was unclear what this was protecting against. (Linus) Reported by : Seraphin Bonnaffe <seraphin.bonnaffe@stericsson.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-26pinctrl/pinconfig: fix misplaced gotoLaurent Meunier1-1/+1
This update contains a basic fix that went unseen through test and review. Signed-off-by: Laurent Meunier <laurent.meunier@st.com> Reviewed-by: Patrice Chotard <patrice.chotard@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-26TTY: fix atime/mtime regressionJiri Slaby1-2/+16
In commit b0de59b5733d ("TTY: do not update atime/mtime on read/write") we removed timestamps from tty inodes to fix a security issue and waited if something breaks. Well, 'w', the utility to find out logged users and their inactivity time broke. It shows that users are inactive since the time they logged in. To revert to the old behaviour while still preventing attackers to guess the password length, we update the timestamps in one-minute intervals by this patch. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-26aio: fix possible invalid memory access when DEBUG is enabledZhao Hongjiang1-1/+1
dprintk() shouldn't access @ring after it's unmapped. Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-26s390/pci: use pci_scan_root_busSebastian Ott1-33/+17
The pci config space accessors on s390 are (now) smart enough to figure out if a pci function is available. So instead of calling pci_create_root_bus and then pci_scan_single_device for each available function just call pci_scan_root_bus and let the pci core do the scanning (via config reads on all possible functions) and device creation. Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390/scm_blk: fix memleak in init functionSebastian Ott1-2/+1
If the allocation of a single request fails the already allocated requests will not be freed. Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390/scm_blk: allow more cluster size valuesSebastian Ott1-2/+4
Allow 0 and powers of 2 between 2 and 128 for write_cluster_size. Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390/cio: fix irq statisticsSebastian Ott1-0/+1
When we fetch an interrupt on the CCW console using tsch (via ccw_device_wait_idle formerly known as wait_cons_dev) we increment the irq count for the affected interruption class but it is not accounted as an IO interrupt. This is broken since commit b603d258a43b4e7339660bdd3b5c25eacd603e54 "s390: remove superfluous tpi from wait_cons_dev" Fix it so that the sum of the individual interrupts per class matches the number of IO interrupts again. Reported-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390/memory hotplug: prevent offline of active memory incrementsHeiko Carstens1-1/+3
In case a machine supports memory hotplug all active memory increments present at IPL time have been initialized with a "usecount" of 1. This is wrong if the memory increment size is larger than the memory section size of the memory hotplug code. If that is the case the usecount must be initialized with the number of memory sections that fit into one memory increment. Otherwise it is possible to put a memory increment into standby state even if there are still active sections. Afterwards addressing exceptions might happen which cause the kernel to panic. However even worse, if a memory increment was put into standby state and afterwards into active state again, it's contents would have been zeroed, leading to memory corruption. This was only an issue for machines that support standby memory and have at least 256GB memory. This is broken since commit fdb1bb15 "[S390] sclp/memory hotplug: fix initial usecount of increments". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: stable@vger.kernel.org # 2.6.39+ Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390: remove small stack config optionHeiko Carstens3-28/+0
We've seen repeatedly that 8KB stack size on 64 bit kernels is not sufficient. So simply remove the config option. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390: system call path micro optimizationMartin Schwidefsky6-13/+24
Add a pointer to the system call table to the thread_info structure. The TIF_31BIT bit is set or cleared by SET_PERSONALITY exactly once for the lifetime of a process. With the pointer to the correct system call table in thread_info the system call code in entry64.S path can drop the check for TIF_31BIT which saves a couple of instructions. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26s390: lowcore stack pointer offsetsMartin Schwidefsky4-48/+46
Store the stack pointers in the lowcore for the kernel stack, the async stack and the panic stack with the offset required for the first user. This avoids an unnecessary add instruction on the system call path. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-04-26lockdep: Consolidate bug messages into a single print_lockdep_off() functionDave Jones1-15/+13
Also add some missing printk levels. Signed-off-by: Dave Jones <davej@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20130425174002.GA26769@redhat.com [ Tweaked the messages a bit. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-26lockdep: Print out additional debugging advice when we hit lockdep BUGsDave Jones1-0/+5
We occasionally get reports of these BUGs being hit, and the stack trace doesn't necessarily always tell us what we need to know about why we are hitting those limits. If users start attaching /proc/lock_stats to reports we may have more of a clue what's going on. Signed-off-by: Dave Jones <davej@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20130423163403.GA12839@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-04-26fbdev: fix check for fb_mmap's mmio availabilityTomi Valkeinen1-0/+5
Commit fc9bbca8f650e5f738af8806317c0a041a48ae4a (vm: convert fb_mmap to vm_iomap_memory() helper) made fbmem.c use vm_iomap_memory, but also accidentally removed the check for mmio's availability. Add the check back. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2013-04-26fbdev: improve fb_mmap bounds checksTomi Valkeinen4-5/+18
Improve fb_mmap bounds checks in gbefb, smscufx, udlfb and vfb drivers to prevent possible uint overflows. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Steve Glendinning <steve.glendinning@smsc.com> Cc: Bernie Thompson <bernie@plugable.com>
2013-04-26fbdev/ps3fb: use vm_iomap_memory()Tomi Valkeinen1-12/+6
Use vm_iomap_memory() instead of [io_]remap_pfn_range(). vm_iomap_memory() gives us much simpler API to map memory to userspace, and reduces possibilities for bugs. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
2013-04-25parisc: use spin_lock_irqsave/spin_unlock_irqrestore for PTE updatesJohn David Anglin2-26/+26
User applications running on SMP kernels have long suffered from instability and random segmentation faults. This patch improves the situation although there is more work to be done. One of the problems is the various routines in pgtable.h that update page table entries use different locking mechanisms, or no lock at all (set_pte_at). This change modifies the routines to all use the same lock pa_dbit_lock. This lock is used for dirty bit updates in the interruption code. The patch also purges the TLB entries associated with the PTE to ensure that inconsistent values are not used after the page table entry is updated. The UP and SMP code are now identical. The change also includes a minor update to the purge_tlb_entries function in cache.c to improve its efficiency. Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25parisc: disable -mlong-calls compiler option for kernel modulesHelge Deller1-2/+4
CONFIG_MLONGCALLS was introduced in commit ec758f98328da3eb933a25dc7a2eed01ef44d849 to overcome linker issues when linking huge linux kernels, e.g. with many modules linked in. But in the kernel module loader there is no support yet for the new relocation types, which is why modules built with -mlong-calls can't be loaded. Furthermore, for modules long calls are not really necessary, since we already use stub sections which resolve long distance calls. So, let's just disable this compiler option when compiling kernel modules. Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25parisc: uaccess: fix compiler warnings caused by __put_user castingWill Deacon1-10/+4
When targetting 32-bit processors, __put_user emits a pair of stw instructions for the 8-byte case. If the type of __val is a pointer, the marshalling code casts it to the wider integer type of u64, resulting in the following compiler warnings: kernel/signal.c: In function 'copy_siginfo_to_user': kernel/signal.c:2752:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] kernel/signal.c:2752:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] [...] This patch fixes the warnings by removing the marshalling code and using the correct output modifiers in the __put_{user,kernel}_asm64 macros so that GCC will allocate the right registers without the need to extract the two words explicitly. Cc: Helge Deller <deller@gmx.de> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25parisc: Change kunmap macro to static inline functionJohn David Anglin1-1/+4
Change kunmap macro to static inline function to fix build error compiling drivers/base/dma-buf.c. Without the change, the following error can occur: CC drivers/base/dma-buf.o drivers/base/dma-buf.c: In function 'dma_buf_kunmap': drivers/base/dma-buf.c:427:46: error: macro "kunmap" passed 3 arguments, but takes just 1 I believe parisc is the only arch to implement kunmap using a macro. Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25parisc: Provide __ucmpdi2 to resolve undefined references in 32 bit builds.John David Anglin3-1/+29
The Debian experimental linux source package (3.8.5-1) build fails with the following errors: ... MODPOST 2016 modules ERROR: "__ucmpdi2" [fs/btrfs/btrfs.ko] undefined! ERROR: "__ucmpdi2" [drivers/md/dm-verity.ko] undefined! The attached patch resolves this problem. It is based on the s390 implementation of ucmpdi2.c. Signed-off-by: John David Anglin <dave.anglin@bell.net> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Signed-off-by: Helge Deller <deller@gmx.de>
2013-04-25USB: ehci-msm: USB_MSM_OTG needs USB_PHYArnd Bergmann1-0/+1
The Kconfig entry for USB_EHCI_MSM unconditionally selects USB_MSM_OTG, which is now only visible when USB_PHY is also enabled. This adds an appropriate dependency and enables USB_PHY in the msm defconfig, avoiding the Kbuild warning: warning: (USB_EHCI_MSM) selects USB_MSM_OTG which has unmet direct dependencies (USB_SUPPORT && USB_PHY && (USB || USB_GADGET) && ARCH_MSM) Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Cc: Pavankumar Kondeti <pkondeti@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25USB: OHCI: avoid conflicting platform driversArnd Bergmann1-18/+118
Like the EHCI driver, OHCI supports a large number of different platform glue drivers by directly including them, which causes problems with conflicting macro definitions in some cases. As more ARM architecture specific back-ends are required to coexist in a single build, we should split those out into separate drivers. Unfortunately, the infrastructure for that is still under development, so to give us more time, this uses a separate *_PLATFORM_DRIVER macro for each ARM specific OHCI backend, just like we already do on PowerPC and some of the other ARM platforms. In linux-3.10, only the SPEAr and CNS3xxx back-ends would actually conflict without this patch, but over time we would get more of them, so this is a way to avoid having to patch the driver every time it breaks. We should still split out all back-ends into separate loadable modules, but that work is only needed to improve code size and cleanliness after this patch, not for correctness. While we're here, this fixes the incorrectly sorted error path for the OMAP1 and OMAP3 backends to ensure we always unregister the exact set of drivers that were registered before erroring out. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25USB: OMAP: ISP1301 needs USB_PHYArnd Bergmann3-1/+3
The Kconfig entry for USB_OMAP unconditionally selects USB_ISP1301, which is now only visible when USB_PHY is also enabled. This adds an appropriate dependency and enables USB_PHY in the omap1 defconfig, avoiding these build warnings: warning: (USB_OHCI_HCD && USB_OMAP) selects ISP1301_OMAP which has unmet direct dependencies (USB_SUPPORT && USB_PHY && I2C && ARCH_OMAP_OTG) Also fix a Makefile typo while we're at it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-25USB: lpc32xx: ISP1301 needs USB_PHYArnd Bergmann2-0/+2
The Kconfig entry for USB_LPC32XX unconditionally selects USB_ISP1301, which is now only visible when USB_PHY is also enabled. This adds an appropriate dependency and enables USB_PHY in the msm defconfig, avoiding these build errors: warning: (USB_LPC32XX) selects USB_ISP1301 which has unmet direct dependencies (USB_SUPPORT && USB_PHY && (USB || USB_GADGET) && I2C) drivers/built-in.o: In function `usb_hcd_nxp_probe': drivers/usb/host/ohci-nxp.c:224: undefined reference to `isp1301_get_client' drivers/built-in.o: In function `lpc32xx_udc_probe': drivers/usb/gadget/lpc32xx_udc.c:3071: undefined reference to `isp1301_get_client' Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Cc: Roland Stigge <stigge@antcom.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-24sparc64: Fix missing put_cpu_var() in tlb_batch_add_one() when not batching.David S. Miller1-1/+2
Reported-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-24Revert "gpio: pxa: set initcall level to module init"Linus Walleij1-1/+6
This reverts commit 6c7e660a27da7494c670bfba21cfeba30457656c. The commit causes breakage on several older PXA machines. Reported-by: Mike Dunn <mikedunn@newsguy.com> Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-04-24vfio-pci: Use cached MSI/MSI-X capabilitiesBjorn Helgaas1-3/+3
We now cache the MSI/MSI-X capability offsets in the struct pci_dev, so no need to find the capabilities again. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2013-04-24vfio-pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASKBjorn Helgaas1-2/+2
PCI_MSIX_FLAGS_BIRMASK is mis-named because the BIR mask is in the Table Offset register, not the flags ("Message Control" per spec) register. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Alex Williamson <alex.williamson@redhat.com>
2013-04-24USB: ftdi_sio: enable two UART ports on ST Microconnect LiteAdrian Thomasset1-7/+11
The FT4232H used in the ST Micro Connect Lite has four hi-speed UART ports. The first two ports are reserved for the JTAG interface. We enable by default ports 2 and 3 as UARTs (where port 2 is a conventional RS-232 UART) Signed-off-by: Adrian Thomasset <adrian.thomasset@st.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>