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* drivers/rtc/rtc-pcf2127.c: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERODuan Jiong2014-01-241-4/+1
| | | | | | | | | Fix a coccinelle error regarding usage of IS_ERR and PTR_ERR instead of PTR_ERR_OR_ZERO. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/Kconfig: disable RTC_DRV_CMOS on AtariGeert Uytterhoeven2014-01-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | On ARAnyM (emulating an Atari Falcon, which doesn't have an RTC IRQ, as the Second Multi Function Peripheral MFP 68901 is available on Atari TT only), rtc-cmos doesn't work well: - The date is of by 32 years (2045 instead of 2013): rtc_cmos rtc_cmos: setting system clock to 2045-12-02 10:56:17 UTC (2395824977) - The hwclock utility doesn't work: hwclock: ioctl() to /dev/rtc to turn on update interrupts failed unexpectedly, errno=5: Input/output error. As rtc-generic works fine for the RTC part, and nvram works for the NVRAM part, we'll continue on using that. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-cmos.c: remove superfluous name castGeert Uytterhoeven2014-01-241-1/+1
| | | | | | | | | device_driver.name is "const char *" Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add hym8563 rtc-driverHeiko Stuebner2014-01-243-0/+618
| | | | | | | | | | | | | | | | | | The Haoyu Microelectronics HYM8563 provides rtc and alarm functions as well as a clock output of up to 32kHz. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Grant Likely <grant.likely@linaro.org> Cc: Mike Turquette <mturquette@linaro.org> Cc: Richard Weinberger <richard.weinberger@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dt-bindings: add hym8563 bindingHeiko Stuebner2014-01-242-0/+28
| | | | | | | | | | | | | | | | | Add binding documentation for the hym8563 rtc chip. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Grant Likely <grant.likely@linaro.org> Cc: Mike Turquette <mturquette@linaro.org> Cc: Richard Weinberger <richard.weinberger@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-vr41xx.c: use devm_*() functionsJingoo Han2014-01-241-38/+12
| | | | | | | | | | | Use devm_*() functions to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Yoichi Yuasa <yuasa@linux-mips.org> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-twl.c: use devm_*() functionsJingoo Han2014-01-241-25/+13
| | | | | | | | | | | Use devm_*() functions to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Yoichi Yuasa <yuasa@linux-mips.org> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-ds1742.c: add devicetree supportAlexander Shiyan2014-01-242-1/+21
| | | | | | | | | This patch allows the driver to be enabled with devicetree. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-mxc.c: check the return value from clk_prepare_enable()Fabio Estevam2014-01-241-1/+4
| | | | | | | | | clk_prepare_enable() may fail, so let's check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-mxc.c: remove unneeded labelFabio Estevam2014-01-241-4/+1
| | | | | | | | | | There is no need to jump to the 'exit_free_pdata' label when devm_clk_get() fails, as we can directly return the error and simplify the code a bit. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-ds1305.c: remove unnecessary spi_set_drvdata()Jingoo Han2014-01-241-1/+0
| | | | | | | | | | The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-as3722: use devm for rtc and irq registrationLaxman Dewangan2014-01-241-16/+3
| | | | | | | | | | Use devm_* calls for rtc and irq registration and get rid of remove callback for platform driver. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Cc: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs: fix symlinks aren't checked for expiryIan Kent2014-01-242-0/+18
| | | | | | | | | | | | | | | | | | | | | | The autofs4 module doesn't consider symlinks for expire as it did in the older autofs v3 module (so it's actually a long standing regression). The user space daemon has focused on the use of bind mounts instead of symlinks for a long time now and that's why this has not been noticed. But with the future addition of amd map parsing to automount(8), not to mention amd itself (of am-utils), symlink expiry will be needed. The direct and offset mount types can't be symlinks and the tree mounts of version 4 were always real mounts so only indirect mounts need expire symlinks. Since the current users of the autofs4 module haven't reported this as a problem to date this patch probably isn't a candidate for backport to stable. Signed-off-by: Ian Kent <ikent@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs: use IS_ROOT to replace root dentry checksRui Xiang2014-01-241-3/+3
| | | | | | | | | | Use the helper macro !IS_ROOT to replace parent != dentry->d_parent. Just clean up. Signed-off-by: Rui Xiang <rui.xiang@huawei.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs: fix the return value of autofs4_fill_superRui Xiang2014-01-241-5/+8
| | | | | | | | | | | While kzallocing sbi/ino fails, it should return -ENOMEM. And it should return the err value from autofs_prepare_pipe. Signed-off-by: Rui Xiang <rui.xiang@huawei.com> Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs4: translate pids to the right namespace for the daemonMiklos Szeredi2014-01-241-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | The PID and the TGID of the process triggering the mount are sent to the daemon. Currently the global pid values are sent (ones valid in the initial pid namespace) but this is wrong if the autofs daemon itself is not running in the initial pid namespace. So send the pid values that are valid in the namespace of the autofs daemon. The namespace to use is taken from the oz_pgrp pid pointer, which was set at mount time to the mounting process' pid namespace. If the pid translation fails (the triggering process is in an unrelated pid namespace) then the automount fails with ENOENT. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Cc: Eric Biederman <ebiederm@xmission.com> Acked-by: Ian Kent <raven@themaw.net> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* autofs4: allow autofs to work outside the initial PID namespaceSukadev Bhattiprolu2014-01-243-13/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable autofs4 to work in a "container". oz_pgrp is converted from pid_t to struct pid and this is stored at mount time based on the "pgrp=" option or if the option is missing then the current pgrp. The "pgrp=" option is interpreted in the PID namespace of the current process. This option is flawed in that it doesn't carry the namespace information, so it should be deprecated. AFAICS the autofs daemon always sends the current pgrp, which is the default anyway. The oz_pgrp is also set from the AUTOFS_DEV_IOCTL_SETPIPEFD_CMD ioctl. This ioctl sets oz_pgrp to the current pgrp. It is not allowed to change the pid namespace. oz_pgrp is used mainly to determine whether the process traversing the autofs mount tree is the autofs daemon itself or not. This function now compares the pid pointers instead of the pid_t values. One other use of oz_pgrp is in autofs4_show_options. There is shows the virtual pid number (i.e. the one that is valid inside the PID namespace of the calling process) For debugging printk convert oz_pgrp to the value in the initial pid namespace. Signed-off-by: Sukadev Bhattiprolu <sukadev@us.ibm.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Cc: Eric Biederman <ebiederm@xmission.com> Acked-by: Ian Kent <raven@themaw.net> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* init: fix possible format string bugTetsuo Handa2014-01-242-4/+5
| | | | | | | | Use constant format string in case message changes. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* init/main.c: remove unused declaration of tc_init()Geert Uytterhoeven2014-01-241-4/+0
| | | | | | | | Its user was removed in v2.5.2.4. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/ramfs: move ramfs_aops to inode.cAxel Lin2014-01-244-15/+7
| | | | | | | | | | ramfs_aops is identical in file-mmu.c and file-nommu.c. Thus move it to fs/ramfs/inode.c and make it static. Signed-off-by: Axel Lin <axel.lin@ingics.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>
* fs/ramfs/file-nommu.c: make ramfs_nommu_get_unmapped_area() and ↵Axel Lin2014-01-242-9/+8
| | | | | | | | | | | | | ramfs_nommu_mmap() static Since commit 853ac43ab194 ("shmem: unify regular and tiny shmem"), ramfs_nommu_get_unmapped_area() and ramfs_nommu_mmap() are not directly referenced outside of file-nommu.c. Thus make them static. Signed-off-by: Axel Lin <axel.lin@ingics.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>
* fs: binfmt_elf: remove unused defines INTERPRETER_NONE and INTERPRETER_ELFTodor Minchev2014-01-241-3/+0
| | | | | | | | | These two defines are unused since the removal of the a.out interpreter support in the ELF loader in kernel 2.6.25 Signed-off-by: Todor Minchev <todor@minchev.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: prefer ether_addr_copy to memcpy(foo, bar, ETH_ALEN)Joe Perches2014-01-241-0/+10
| | | | | | | | | | | ether_addr_copy was added for kernel version 3.14. It's slightly smaller/faster for some arches. Encourage its use. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: add DT compatible string documentation checksRob Herring2014-01-241-0/+27
| | | | | | | | | | | | | | | This adds a simple check that any compatible strings in DeviceTree dts files are present in Documentation/devicetree/bindings. Vendor prefixes are also checked for existing in vendor-prefixes.txt These should be temporary checks until we have more sophisticated binding schema checking. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Joe Perches <joe@perches.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: only flag FSF address, not gnu.org URLAlexander Duyck2014-01-241-3/+1
| | | | | | | | | | | | | | | | | | | | | | | This change restricts the check for the for the FSF address in the GPL copyright statement so that it only flags the address, not the references to the gnu.org/licenses URL which appears to be used in numerous drivers. The idea is to still allow some reference to an external copy of the GPL in the event that files are copied out of the kernel tree without the COPYING file. So for example this statement will still return an error: You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. However, this statement will not return an error after this patch: You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: add tests for function pointer style misusesJoe Perches2014-01-241-0/+59
| | | | | | | | | | | | | Kernel style uses function pointers in this form: "type (*funcptr)(args...)" Emit warnings when this function pointer form isn't used. Signed-off-by: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Derek Perrin <d.roc16@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: update the FSF/GPL address checkJoe Perches2014-01-241-5/+6
| | | | | | | | | | | | | | | The FSF address check is a bit too verbose looking for the GPL text. Quiet it a bit by requiring --strict for the GPL bit. Also make the address tests match a few uses of abbreviations for street names and make it case insensitive. Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: check for if's with unnecessary parenthesesJoe Perches2014-01-241-0/+14
| | | | | | | | | | | | | | | If statements don't need multiple parentheses around tested comparisons like "if ((foo == bar))". An == comparison maybe a sign of an intended assignment, so emit a slightly different message if so. Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: improve space before tab --fix optionJoe Perches2014-01-241-2/+4
| | | | | | | | | | | | | | | | | | | | This test should remove all the spaces before a tab not just one space. Substitute a tab for each 8 space block before a tab and remove less than 8 spaces before a tab. This SPACE_BEFORE_TAB test is done after CODE_INDENT. If there are spaces used at the beginning of a line that should be converted to tabs, please make sure that the CODE_INDENT test and conversion is done before this SPACE_BEFORE_TAB test and conversion. Reported-by: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Joe Perches <joe@perches.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: add a --fix-inplace optionJoe Perches2014-01-241-1/+9
| | | | | | | | | | | | Add the ability to fix and overwrite existing files/patches instead of creating a new file "<filename>.EXPERIMENTAL-checkpatch-fixes". Suggested-by: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Andy Whitcroft <apw@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: attempt to find missing switch/case break;Joe Perches2014-01-241-0/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | switch case statements missing a break statement are an unfortunately common error. e.g.: commit 4a2c94c9b6c0 ("HID: kye: Add report fixup for Genius Manticore Keyboard") case blocks should end in a break/return/goto/continue. If a fall-through is used, it should have a comment showing that it is intentional. Ideally that comment should be something like: "/* fall-through */" Add a test to look for missing break statements. This looks only at the context lines before an inserted case so it's possible to have false positives when the context contains a close brace and the break is before the brace and not part of the patch context. Looking at recent patches, this is a pretty rare occurrence. The normal kernel style uses a break as the last line of the previous block. Signed-off-by: Joe Perches <joe@perche.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: add warning of future __GFP_NOFAIL useDavid Rientjes2014-01-241-0/+6
| | | | | | | | | | | | gfp.h and page_alloc.c already specify that __GFP_NOFAIL is deprecated and no new users should be added. Add a warning to checkpatch to catch this. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: warn only on "space before semicolon" at end of lineJoe Perches2014-01-241-1/+1
| | | | | | | | | | | | The "space before a non-naked semicolon" test has unwanted output when used in "for ( ;; )" loops. Make the test work only on end-of-line statement termination semicolons. Signed-off-by: Joe Perches <joe@perches.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* checkpatch: more comprehensive split strings warningJoe Perches2014-01-241-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current checkpatch test for split strings does not find several cases that should be found. For instance: /* Else poor success; go back to mode in "active" table */ } else { IWL_DEBUG_RATE(mvm, - "LQ: GOING BACK TO THE OLD TABLE suc=%d cur-tpt=%d old-tpt=%d\n", + "GOING BACK TO THE OLD TABLE: SR %d " + "cur-tpt %d old-tpt %d\n", window->success_ratio, window->average_tpt, lq_sta->last_tpt); does not currently emit a warning. Improve the test to find these cases. Add more exceptions to reduce false positives for assembly and octal/hex string constants. Signed-off-by: Joe Perches <joe@perches.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* firmware/dmi_scan: generalize for use by other archsArd Biesheuvel2014-01-246-15/+24
| | | | | | | | | | | | | | | | This patch makes a couple of changes to the SMBIOS/DMI scanning code so it can be used on other archs (such as ARM and arm64): (a) wrap the calls to ioremap()/iounmap(), this allows the use of a flavor of ioremap() more suitable for random unaligned access; (b) allow the non-EFI fallback probe into hardcoded physical address 0xF0000 to be disabled. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Grant Likely <grant.likely@linaro.org> Cc: Ingo Molnar <mingo@elte.hu> Cc "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* test: check copy_to/from_user boundary validationKees Cook2014-01-245-0/+138
| | | | | | | | | | | | | | | | | | | | To help avoid an architecture failing to correctly check kernel/user boundaries when handling copy_to_user, copy_from_user, put_user, or get_user, perform some simple tests and fail to load if any of them behave unexpectedly. Specifically, this is to make sure there is a way to notice if things like what was fixed in commit 8404663f81d2 ("ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS") ever regresses again, for any architecture. Additionally, adds new "user" selftest target, which loads this module. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* test: add minimal module for verification testingKees Cook2014-01-243-0/+48
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a pair of test modules I'd like to see in the tree. Instead of putting these in lkdtm, where I've been adding various tests that trigger crashes, these don't make sense there since they need to be either distinctly separate, or their pass/fail state don't need to crash the machine. These live in lib/ for now, along with a few other in-kernel test modules, and use the slightly more common "test_" naming convention, instead of "test-". We should likely standardize on the former: $ find . -name 'test_*.c' | grep -v /tools/ | wc -l 4 $ find . -name 'test-*.c' | grep -v /tools/ | wc -l 2 The first is entirely a no-op module, designed to allow simple testing of the module loading and verification interface. It's useful to have a module that has no other uses or dependencies so it can be reliably used for just testing module loading and verification. The second is a module that exercises the user memory access functions, in an effort to make sure that we can quickly catch any regressions in boundary checking (e.g. like what was recently fixed on ARM). This patch (of 2): When doing module loading verification tests (for example, with module signing, or LSM hooks), it is very handy to have a module that can be built on all systems under test, isn't auto-loaded at boot, and has no device or similar dependencies. This creates the "test_module.ko" module for that purpose, which only reports its load and unload to printk. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib/cmdline.c: declare exported symbols immediatelyFelipe Contreras2014-01-241-3/+2
| | | | | | | | | | | | | | | | WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable +EXPORT_SYMBOL(memparse); WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable +EXPORT_SYMBOL(get_option); WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable +EXPORT_SYMBOL(get_options); Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Cc: Levente Kurusa <levex@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib/cmdline.c: fix style issuesFelipe Contreras2014-01-241-5/+4
| | | | | | | | | | | | | | | | | | | | | WARNING: space prohibited between function name and open parenthesis '(' +int get_option (char **str, int *pint) WARNING: space prohibited between function name and open parenthesis '(' + *pint = simple_strtol (cur, str, 0); ERROR: trailing whitespace + $ WARNING: please, no spaces at the start of a line + $ WARNING: space prohibited between function name and open parenthesis '(' + res = get_option ((char **)&str, ints + i); Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* lib/kstrtox.c: remove redundant cleanupFelipe Contreras2014-01-241-1/+0
| | | | | | | | | | We can't reach the cleanup code unless the flag KSTRTOX_OVERFLOW is not set, so there's not no point in clearing a bit that we know is not set. Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com> Acked-by: Levente Kurusa <levex@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: lp8788: remove unnecessary parenthesesJingoo Han2014-01-241-3/+3
| | | | | | | | | | | Remove unnecessary parentheses in order to fix the following checkpatch error. ERROR: return is not a function, parentheses are not required Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: lp855x: remove unnecessary parenthesesJingoo Han2014-01-241-1/+1
| | | | | | | | | | | Remove unnecessary parentheses in order to fix the following checkpatch error. ERROR: return is not a function, parentheses are not required Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: kb3886_bl: fix incorrect placement of __initdata markerJingoo Han2014-01-241-1/+1
| | | | | | | | | | | | | The __initdata marker can be virtually anywhere on the line, EXCEPT right after "struct". The preferred location is before the "=" sign if there is one, or before the trailing ";" otherwise. It also fixes the following chechpatch warning. WARNING: __initdata should be placed after kb3886bl_device_table[] Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: tosa: use devm_lcd_device_register()Jingoo Han2014-01-241-4/+2
| | | | | | | | | Use devm_lcd_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: l4f00242t03: use devm_lcd_device_register()Jingoo Han2014-01-241-4/+2
| | | | | | | | | Use devm_lcd_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: jornada720: use devm_lcd_device_register()Jingoo Han2014-01-241-11/+2
| | | | | | | | | | Use devm_lcd_device_register() to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: tosa: use devm_backlight_device_register()Jingoo Han2014-01-241-4/+3
| | | | | | | | | Use devm_backlight_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: ot200_bl: use devm_backlight_device_register()Jingoo Han2014-01-241-6/+3
| | | | | | | | | Use devm_backlight_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: omap1: use devm_backlight_device_register()Jingoo Han2014-01-241-12/+2
| | | | | | | | | | Use devm_backlight_device_register() to make cleanup paths simpler, and remove unnecessary remove(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* backlight: hp680_bl: use devm_backlight_device_register()Jingoo Han2014-01-241-4/+2
| | | | | | | | | Use devm_backlight_device_register() to make cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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