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* ptrace: task_clear_jobctl_trapping()->wake_up_bit() needs mb()Oleg Nesterov2014-06-071-0/+1
| | | | | | | | | | __wake_up_bit() checks waitqueue_active() and thus the caller needs mb() as wake_up_bit() documents, fix task_clear_jobctl_trapping(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ptrace: fix fork event messages across pid namespacesMatthew Dempsky2014-06-072-3/+39
| | | | | | | | | | | | | | | | | | | | | | | | | When tracing a process in another pid namespace, it's important for fork event messages to contain the child's pid as seen from the tracer's pid namespace, not the parent's. Otherwise, the tracer won't be able to correlate the fork event with later SIGTRAP signals it receives from the child. We still risk a race condition if a ptracer from a different pid namespace attaches after we compute the pid_t value. However, sending a bogus fork event message in this unlikely scenario is still a vast improvement over the status quo where we always send bogus fork event messages to debuggers in a different pid namespace than the forking process. Signed-off-by: Matthew Dempsky <mdempsky@chromium.org> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Julien Tinnes <jln@chromium.org> Cc: Roland McGrath <mcgrathr@chromium.org> Cc: Jan Kratochvil <jan.kratochvil@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>
* Documentation/memory-barriers.txt: fix important typo re memory barriersAlexey Dobriyan2014-06-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Examples introducing neccesity of RMB+WMP pair reads as A=3 READ B www rrrrrr B=4 READ A Note the opposite order of reads vs writes. But the first example without barriers reads as A=3 READ A B=4 READ B There are 4 outcomes in the first example. But if someone new to the concept tries to insert barriers like this: A=3 READ A www rrrrrr B=4 READ B he will still get all 4 possible outcomes, because "READ A" is first. All this can be utterly confusing because barrier pair seems to be superfluous. In short, fixup first example to match latter examples with barriers. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Documentation/filesystems/seq_file.txt: create_proc_entry deprecatedFabian Frederick2014-06-071-0/+9
| | | | | | | | | | | | | Linked article in seq_file.txt still uses create_proc_entry which was removed in commit 80e928f7ebb9 ("proc: Kill create_proc_entry()"). This patch adds information for kernel 3.10 and above Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Documentation/SubmittingPatches: describe the Fixes: tagJacob Keller2014-06-071-1/+21
| | | | | | | | | | | | | Update the SubmittingPatches process to include howto about the new 'Fixes:' tag to be used when a patch fixes an issue in a previous commit (found by git-bisect for example). Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/fat/inode.c: clean up string initializations (char[] instead of char *)Manuel Schölling2014-06-071-1/+1
| | | | | | | | | | | | Initializations like 'char *foo = "bar"' will create two variables: a static string and a pointer (foo) to that static string. Instead 'char foo[] = "bar"' will declare a single variable and will end up in shorter assembly (according to Jeff Garzik on the KernelJanitor's TODO list). Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/fat/: add support for DOS 1.x formatted volumesConrad Meyer2014-06-073-77/+274
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add structure for parsed BPB information, struct fat_bios_param_block, and move all of the deserialization and validation logic from fat_fill_super() into fat_read_bpb(). Add a 'dos1xfloppy' mount option to infer DOS 2.x BIOS Parameter Block defaults from block device geometry for ancient floppies and floppy images, as a fall-back from the default BPB parsing logic. When fat_read_bpb() finds an invalid FAT filesystem and dos1xfloppy is set, fall back to fat_read_static_bpb(). fat_read_static_bpb() validates that the entire BPB is zero, and that the floppy has a DOS-style 8086 code bootstrapping header. Then it fills in default BPB values from media size and a table.[0] Media size is assumed to be static for archaic FAT volumes. See also: [1]. Fixes kernel.org bug #42617. [0]: https://en.wikipedia.org/wiki/File_Allocation_Table#Exceptions [1]: http://www.win.tue.nl/~aeb/linux/fs/fat/fat-1.html [hirofumi@mail.parknet.co.jp: fix missed error code] Signed-off-by: Conrad Meyer <cse.cem@gmail.com> Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Tested-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hpfs: increase pr_warn levelFabian Frederick2014-06-078-47/+47
| | | | | | | | | | This patch applies a suggestion by Mikulas Patocka asking to increase all pr_warn without commented ones to pr_err Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hpfs: use __func__ for loggingFabian Frederick2014-06-072-12/+12
| | | | | | | | | Normalize function display fx() using __func__ Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hpfs: use pr_fmt for loggingFabian Frederick2014-06-0710-51/+56
| | | | | | | | | Also remove redundant level names (warning:...) Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hpfs: convert printk to pr_foo()Fabian Frederick2014-06-0710-67/+89
| | | | | | | | | | | | No level printk in hptfs_error converted to pr_err (others to pr_warn or pr_info) This patch also fixes if/then/else checkpatch warnings Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/ufs/balloc.c: remove err parameter in ufs_add_fragmentsFabian Frederick2014-06-071-3/+3
| | | | | | | | | | err is used in ufs_new_fragments (ufs_add_fragments only callsite) not in ufs_add_fragments. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Evgeniy Dushistov <dushistov@mail.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: fix compiler warning on PowerPCChristian Kujau2014-06-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a99b7069aab8 ("hfsplus: Fix undefined __divdi3 in hfsplus_init_header_node()") introduced do_div() to xattr.c and the warning below too. As Geert remarked: "tmp" is "loff_t" which is "__kernel_loff_t", which is "long long", i.e. signed, while include/asm-generic/div64.h compares its type with "uint64_t". As inode sizes are positive, it should be safe to change the type of "tmp" to "u64". In file included from arch/powerpc/include/asm/div64.h:1:0, from include/linux/kernel.h:124, from include/asm-generic/bug.h:13, from arch/powerpc/include/asm/bug.h:127, from include/linux/bug.h:4, from include/linux/thread_info.h:11, from include/asm-generic/preempt.h:4, from arch/powerpc/include/generated/asm/preempt.h:1, from include/linux/preempt.h:18, from include/linux/spinlock.h:50, from include/linux/wait.h:8, from include/linux/fs.h:6, from fs/hfsplus/hfsplus_fs.h:19, from fs/hfsplus/xattr.c:9: fs/hfsplus/xattr.c: In function 'hfsplus_init_header_node': include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default] (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ ^ fs/hfsplus/xattr.c:86:2: note: in expansion of macro 'do_div' do_div(tmp, node_size); ^ Signed-off-by: Christian Kujau <lists@nerdbynature.de> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Sergei Antonov <saproj@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus: fix pr_foo() and hfs_dbg formatsFabian Frederick2014-06-073-6/+6
| | | | | | | Signed-off-by: Fabian Frederick <fabf@skynet.be> Suggested-By: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: coding style fix for declarations in hfsplus_fs.hSergei Antonov2014-06-071-96/+107
| | | | | | | | | | | | | | | | Some function declarations in hfsplus_fs.h were with argument names, some without, and some were mixed. This patch adds argument names everywhere, sorts function in order they go in .c files, and moves hfs_part_find() to a proper section. Auto-formatting and sorting was done with: cfunctions *.c | indent -linux | sed "s| \* | \*|" Signed-off-by: Sergei Antonov <saproj@gmail.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus/wrapper.c: replace shift loop by ilog2Fabian Frederick2014-06-071-3/+1
| | | | | | | | | | Replace while blocksize;shift by ilog2 Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Vyacheslav Dubeyko <slava@dubeyko.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>
* hfsplus: fix "unused node is not erased" errorSergei Antonov2014-06-076-7/+28
| | | | | | | | | | | | | | | | | | | | | | | | | Zero newly allocated extents in the catalog tree if volume attributes tell us to. Not doing so we risk getting the "unused node is not erased" error. See kHFSUnusedNodeFix flag in Apple's source code for reference. There was a previous commit clearing the node when it is freed: commit 899bed05e9f6 ("hfsplus: fix issue with unzeroed unused b-tree nodes"). But it did not handle newly allocated extents (this patch fixes it). And it zeroed nodes in all trees unconditionally which is an overkill. This patch adds a condition and also switches to 'tree->node_size' as a simpler method of getting the length to zero. Signed-off-by: Sergei Antonov <saproj@gmail.com> Cc: Anton Altaparmakov <aia21@cam.ac.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Kyle Laracey <kalaracey@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus/wrapper.c: replace min/casting by min_tFabian Frederick2014-06-071-3/+3
| | | | | | | | | Also add * before function comments (it was not detected by kernel-doc) Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus/options.c: replace seq_printf by seq_putsFabian Frederick2014-06-071-5/+4
| | | | | | | | | Replace seq_printf where possible Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/hfsplus/bnode.c: replace min/casting by min_tFabian Frederick2014-06-071-17/+15
| | | | | | | | | Also fixes some pr_ formats Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: emit proper file type from readdirSergei Antonov2014-06-071-1/+19
| | | | | | | | | | | | | | | | hfsplus_readdir() incorrectly returned DT_REG for symbolic links and special files. Return DT_REG, DT_LNK, DT_FIFO, DT_CHR, DT_BLK, DT_SOCK, or DT_UNKNOWN according to mode field in catalog record. Programs relying on information from readdir will now work correctly with HFS+. Signed-off-by: Sergei Antonov <saproj@gmail.com> Cc: Anton Altaparmakov <aia21@cam.ac.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: remove unused routine hfsplus_attr_build_key_uniHin-Tak Leung2014-06-072-28/+0
| | | | | | | | | | | | | | | | The directory/file catalog b-tree equivalent, hfsplus_build_key_uni(), is used by hfsplus_find_cat() for internal referencing between catalog records. There is no corresponding usage for attributes - attribute records do not refer to one another. Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Sougata Santra <sougata@tuxera.com> Cc: Anton Altaparmakov <anton@tuxera.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: correct usage of HFSPLUS_ATTR_MAX_STRLEN for non-English attributesHin-Tak Leung2014-06-075-66/+94
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | HFSPLUS_ATTR_MAX_STRLEN (=127) is the limit of attribute names for the number of unicode character (UTF-16BE) storable in the HFS+ file system. Almost all the current usage of it is wrong, in relation to NLS to on-disk conversion. Except for one use calling hfsplus_asc2uni (which should stay the same) and its uses in calling hfsplus_uni2asc (which was corrected in the earlier patch in this series concerning usage of hfsplus_uni2asc), all the other uses are of the forms: - char buffer[size] - bound check: "if (namespace_adjusted_input_length > size) return failure;" Conversion between on-disk unicode representation and NLS char strings (in whichever direction) always needs to accommodate the worst-case NLS conversion, so all char buffers of that size need to have a NLS_MAX_CHARSET_SIZE x . The bound checks are all wrong, since they compare nls_length derived from strlen() to a unicode length limit. It turns out that all the bound-checks do is to protect hfsplus_asc2uni(), which can fail if the input is too large. There is only one usage of it as far as attributes are concerned, in hfsplus_attr_build_key(). It is in turn used by hfsplus_find_attr(), hfsplus_create_attr(), hfsplus_delete_attr(). Thus making sure that errors from hfsplus_asc2uni() is caught in hfsplus_attr_build_key() and propagated is sufficient to replace all the bound checks. Unpropagated errors from hfsplus_asc2uni() in the file catalog code was addressed recently in an independent patch "hfsplus: fix longname handling" by Sougata Santra. Before this patch, trying to set a 55 CJK character (in a UTF-8 locale, > 127/3=42) attribute plus user prefix fails with: $ setfattr -n user.`cat testing-string` -v `cat testing-string` \ testing-string setfattr: testing-string: Operation not supported and retrieving a stored long attributes is particular ugly(!): find /mnt/* -type f -exec getfattr -d {} \; getfattr: /mnt/testing-string: Input/output error with console log: [268008.389781] hfsplus: unicode conversion failed After the patch, both of the above works. FYI, the test attribute string is prepared with: echo -e -n \ "\xe9\x80\x99\xe6\x98\xaf\xe4\xb8\x80\xe5\x80\x8b\xe9\x9d\x9e\xe5" \ "\xb8\xb8\xe6\xbc\xab\xe9\x95\xb7\xe8\x80\x8c\xe6\xa5\xb5\xe5\x85" \ "\xb6\xe4\xb9\x8f\xe5\x91\xb3\xe5\x92\x8c\xe7\x9b\xb8\xe7\x95\xb6" \ "\xe7\x84\xa1\xe8\xb6\xa3\xe3\x80\x81\xe4\xbb\xa5\xe5\x8f\x8a\xe7" \ "\x84\xa1\xe7\x94\xa8\xe7\x9a\x84\xe3\x80\x81\xe5\x86\x8d\xe5\x8a" \ "\xa0\xe4\xb8\x8a\xe6\xaf\xab\xe7\x84\xa1\xe6\x84\x8f\xe7\xbe\xa9" \ "\xe7\x9a\x84\xe6\x93\xb4\xe5\xb1\x95\xe5\xb1\xac\xe6\x80\xa7\xef" \ "\xbc\x8c\xe8\x80\x8c\xe5\x85\xb6\xe5\x94\xaf\xe4\xb8\x80\xe5\x89" \ "\xb5\xe5\xbb\xba\xe7\x9b\xae\xe7\x9a\x84\xe5\x83\x85\xe6\x98\xaf" \ "\xe7\x82\xba\xe4\xba\x86\xe6\xb8\xac\xe8\xa9\xa6\xe4\xbd\x9c\xe7" \ "\x94\xa8\xe3\x80\x82" | tr -d ' ' (= "pointlessly long attribute for testing", elaborate Chinese in UTF-8 enoding). However, it is not possible to set double the size (110 + 5 is still under 127) in a UTF-8 locale: $setfattr -n user.`cat testing-string testing-string` -v \ `cat testing-string testing-string` testing-string setfattr: testing-string: Numerical result out of range 110 CJK char in UTF-8 is 330 bytes - the generic get/set attribute system call code in linux/fs/xattr.c imposes a 255 byte limit. One can use a combination of iconv to encode content, changing terminal locale for viewing, and an nls=cp932/cp936/cp949/cp950 mount option to fully use 127-unicode attribute in a double-byte locale. Also, as an additional information, it is possible to (mis-)use unicode half-width/full-width forms (U+FFxx) to write attributes which looks like english but not actually ascii. Thanks Anton Altaparmakov for reviewing the earlier ideas behind this change. [akpm@linux-foundation.org: fix build] [akpm@linux-foundation.org: fix build] Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net> Cc: Anton Altaparmakov <anton@tuxera.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Sougata Santra <sougata@tuxera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* hfsplus: fix worst-case unicode to char conversion of file names and attributesHin-Tak Leung2014-06-072-5/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a series of 3 patches which corrects issues in HFS+ concerning the use of non-english file names and attributes. Names and attributes are stored internally as UTF-16 units up to a fixed maximum size, and convert to and from user-representation by NLS. The code incorrectly assume that NLS string lengths are equal to unicode lengths, which is only true for English ascii usage. This patch (of 3): The HFS Plus Volume Format specification (TN1150) states that file names are stored internally as a maximum of 255 unicode characters, as defined by The Unicode Standard, Version 2.0 [Unicode, Inc. ISBN 0-201-48345-9]. File names are converted by the NLS system on Linux before presented to the user. 255 CJK characters converts to UTF-8 with 1 unicode character to up to 3 bytes, and to GB18030 with 1 unicode character to up to 4 bytes. Thus, trying in a UTF-8 locale to list files with names of more than 85 CJK characters results in: $ ls /mnt ls: reading directory /mnt: File name too long The receiving buffer to hfsplus_uni2asc() needs to be 255 x NLS_MAX_CHARSET_SIZE bytes, not 255 bytes as the code has always been. Similar consideration applies to attributes, which are stored internally as a maximum of 127 UTF-16BE units. See XNU source for an up-to-date reference on attributes. Strictly speaking, the maximum value of NLS_MAX_CHARSET_SIZE = 6 is not attainable in the case of conversion to UTF-8, as going beyond 3 bytes requires the use of surrogate pairs, i.e. consuming two input units. Thanks Anton Altaparmakov for reviewing an earlier version of this change. This patch fixes all callers of hfsplus_uni2asc(), and also enables the use of long non-English file names in HFS+. The getting and setting, and general usage of long non-English attributes requires further forthcoming work, in the following patches of this series. [akpm@linux-foundation.org: fix build] Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net> Reviewed-by: Anton Altaparmakov <anton@tuxera.com> Cc: Vyacheslav Dubeyko <slava@dubeyko.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Sougata Santra <sougata@tuxera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/coda: use __func__Fabian Frederick2014-06-075-33/+34
| | | | | | | | | | Replace all function names by __func__ in pr_foo() Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/coda: logging prefix uniformizationFabian Frederick2014-06-075-8/+14
| | | | | | | | | | | | - Add pr_fmt based on module name. - Remove Coda: coda: from pr_foo() Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/coda: replace printk by pr_foo()Fabian Frederick2014-06-076-47/+48
| | | | | | | | | | No level printk converted to pr_warn or pr_info Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Jan Harkes <jaharkes@cs.cmu.edu> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/befs: kernel-doc fixesFabian Frederick2014-06-073-11/+11
| | | | | | | | | Fix some comment errors. Signed-off-by: Fabian Frederick <fabf@skynet.be> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/befs/linuxvfs.c: remove positive test on sector_tFabian Frederick2014-06-071-8/+0
| | | | | | | | sector_t is unsigned. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/befs/btree.c: replace strncpy by strlcpy + coding style fixingFabian Frederick2014-06-071-4/+3
| | | | | | | | | | | | - strncpy + end of string assignement replaced by strlcpy - Fix endif }; - Fix typo Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* fs/befs/linuxvfs.c: replace strncpy by strlcpyFabian Frederick2014-06-071-3/+2
| | | | | | | | strncpy + end of string assignment replaced by strlcpy Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-pxa.c: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. 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-sa1100.c: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. 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-omap.c: enable RTC_IRQWAKEEN bits when Alarm is setLokesh Vutla2014-06-071-34/+33
| | | | | | | | | | | | | | | | | | | | | | When RTC CLKTRCTRL bit is configured in HW_AUTO, module goes to sleep in IDLE state. The Alarm SWakeup event can be used to wakeup the RTC when it is in IDLE state. In order to do so, the alarm needs to be set and enabled before RTC enters the IDLE state. Also the wakeup generation for alarm/timer event needs to be set (bits [1:0] in RTC_IRQWAKEEN register). Currently RTC_IRQWAKEEN bits are set only in suspend/resume paths. With this ALARM interrupts are not generated when it enters IDLE state. So programming the RTC_IRQWAKEEN bits when ever ALARM is set. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.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>
* ARM: at91: fix at91_sysirq_mask_rtc for sam9x5 SoCsBoris BREZILLON2014-06-071-9/+13
| | | | | | | | | | | | | | | | | | | | | sam9x5 SoCs have the following errata: "RTC: Interrupt Mask Register cannot be used Interrupt Mask Register read always returns 0." Hence we should not rely on what IMR claims about already masked IRQs and just disable all IRQs. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Reported-by: Bryan Evenson <bevenson@melinkcorp.com> Reviewed-by: Johan Hovold <johan@hovold.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Bryan Evenson <bevenson@melinkcorp.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Mark Roszko <mark.roszko@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: rtc-at91rm9200: fix infinite wait for ACKUPD irqBoris BREZILLON2014-06-071-2/+14
| | | | | | | | | | | | | | | | | | | | | | | | The rtc user must wait at least 1 sec between each time/calandar update (see atmel's datasheet chapter "Updating Time/Calendar"). Use the 1Hz interrupt to update the at91_rtc_upd_rdy flag and wait for the at91_rtc_wait_upd_rdy event if the rtc is not ready. This patch fixes a deadlock in an uninterruptible wait when the RTC is updated more than once every second. AFAICT the bug is here from the beginning, but I think we should at least backport this fix to 3.10 and the following longterm and stable releases. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Reported-by: Bryan Evenson <bevenson@melinkcorp.com> Tested-by: Bryan Evenson <bevenson@melinkcorp.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-hym8563.c: add optional clock-output-names propertyHeiko Stuebner2014-06-072-0/+6
| | | | | | | | | | This enables the setting of a custom clock name for the clock provided by the hym8563 rtc. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-bfin.c: do not abort when requesting irq failsMike Frysinger2014-06-071-9/+7
| | | | | | | | | | | | | The RTC framework does not let you return an error once a call to devm_rtc_device_register has succeeded. Avoid doing that when the IRQ request fails as we can still support reading/writing the clock without the IRQ. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Reported-by: Ales Novak <alnovak@suse.cz> 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-omap.c: add support for enabling 32khz clockSekhar Nori2014-06-071-1/+15
| | | | | | | | | | | | | | | | | | Newer versions of OMAP RTC IP such as those found in AM335x and DRA7x need an explicit enable of 32khz functional clock which ticks the RTC. AM335x support was working so far because of settings done in U-Boot. However, the DRA7x U-Boot does no such enable of 32khz clock and this patch is need to get the RTC to work on DRA7x at least. In general, it is better to not depend on settings done in U-Boot. Thanks to Lokesh Vutla for noticing this. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-omap.c: use BIT() macroSekhar Nori2014-06-071-21/+21
| | | | | | | | | | | | | | | | | Use BIT() macro for RTC_HAS_<FEATURE> defines instead of hand-writing bit masks. Use BIT() macros for register bit field definitions. While at it, fix indentation done using spaces. No functional change in this patch. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc/rtc-omap.c: remove multiple device id checksSekhar Nori2014-06-071-4/+9
| | | | | | | | | | | | | | | | Remove multiple superfluous device id checks. Since an id_table is present in the driver probe() should never encounter an empty device id entry. In case of OF style match, of_match_device() returns an matching entry. For paranoia sake, check for device id entry once and fail probe() if none is found. This is much better than checking for it multiple times. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: da9063: RTC driverOpensource [Steve Twiss]2014-06-073-0/+344
| | | | | | | | | | | | | | | Add the RTC driver for DA9063. [akpm@linux-foundation.org: coding-style tweaks] Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Lee Jones <lee.jones@linaro.org> Cc: Mark Brown <broonie@linaro.org> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc: add support for Microchip MCP795Josef Gajdusek2014-06-073-0/+208
| | | | | | | | | | | Add driver for SPI RTC Microchip MCP795. Only supports saving/loading time from the chip (i. e. no alarms/power events/ID). Signed-off-by: Josef Gajdusek <atx@atx.name> Cc: Jingoo Han <jg1.han@samsung.com> Acked-by: 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-ds1343.c: fix potential race conditionRaghavendra Ganiga2014-06-071-14/+24
| | | | | | | | | | | | | | | | Avoid the potential race condition by avoiding bailing out of driver in probe after registering with rtc subsystem Also the set_alarm , read_alarm and alarm_irq_enable returns error if irq registration fails in probe. Also the sysfs will not create entry for alarm if irq registration fails in probe. Signed-off-by: Raghavendra Chandra Ganiga <ravi23ganiga@gmail.com> Acked-by: 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: fix build errorRaghavendra Ganiga2014-06-071-0/+1
| | | | | | | | | | | | | | Fix the following build errors reported by kbuild test robot by selecting REGMAP_SPI in Kconfig file drivers/built-in.o: In function `ds1343_probe': rtc-ds1343.c:(.text+0x1baf8f): undefined reference to `devm_regmap_init_spi' Signed-off-by: Raghavendra Chandra Ganiga <ravi23ganiga@gmail.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/rtc: add support for maxim dallas rtc ds1343 and ds1344Raghavendra Ganiga2014-06-073-0/+690
| | | | | | | | Signed-off-by: Raghavendra Chandra Ganiga <ravi23ganiga@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
* rtc: rtc-palmas: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. 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>
* rtc: rtc-mv: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. 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>
* rtc: isl12057: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. 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>
* rtc: rtc-hym8563: make of_device_id array constJingoo Han2014-06-071-1/+1
| | | | | | | | | | Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Heiko Stbner <heiko@sntech.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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