linux/drivers/staging/dgrp, branch v3.9.5

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2013-02-27T04:16:07Z

Pull vfs pile (part one) from Al Viro: "Assorted stuff - cleaning namei.c up a bit, fixing ->d_name/->d_parent locking violations, etc. The most visible changes here are death of FS_REVAL_DOT (replaced with "has ->d_weak_revalidate()") and a new helper getting from struct file to inode. Some bits of preparation to xattr method interface changes. Misc patches by various people sent this cycle *and* ocfs2 fixes from several cycles ago that should've been upstream right then. PS: the next vfs pile will be xattr stuff." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (46 commits) saner proc_get_inode() calling conventions proc: avoid extra pde_put() in proc_fill_super() fs: change return values from -EACCES to -EPERM fs/exec.c: make bprm_mm_init() static ocfs2/dlm: use GFP_ATOMIC inside a spin_lock ocfs2: fix possible use-after-free with AIO ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path get_empty_filp()/alloc_file() leave both ->f_pos and ->f_version zero target: writev() on single-element vector is pointless export kernel_write(), convert open-coded instances fs: encode_fh: return FILEID_INVALID if invalid fid_type kill f_vfsmnt vfs: kill FS_REVAL_DOT by adding a d_weak_revalidate dentry op nfsd: handle vfs_getattr errors in acl protocol switch vfs_getattr() to struct path default SET_PERSONALITY() in linux/elf.h ceph: prepopulate inodes only when request is aborted d_hash_and_lookup(): export, switch open-coded instances 9p: switch v9fs_set_create_acl() to inode+fid, do it before d_instantiate() 9p: split dropping the acls from v9fs_set_create_acl() ...

new helper: file_inode(file)

2013-02-23T04:31:31Z

Signed-off-by: Al Viro

Merge tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2013-02-21T21:41:04Z

Pull tty/serial patches from Greg Kroah-Hartman: "Here's the big tty/serial driver patches for 3.9-rc1. More tty port rework and fixes from Jiri here, as well as lots of individual serial driver updates and fixes. All of these have been in the linux-next tree for a while." * tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits) tty: mxser: improve error handling in mxser_probe() and mxser_module_init() serial: imx: fix uninitialized variable warning serial: tegra: assume CONFIG_OF TTY: do not update atime/mtime on read/write lguest: select CONFIG_TTY to build properly. ARM defconfigs: add missing inclusions of linux/platform_device.h fb/exynos: include platform_device.h ARM: sa1100/assabet: include platform_device.h directly serial: imx: Fix recursive locking bug pps: Fix build breakage from decoupling pps from tty tty: Remove ancient hardpps() pps: Additional cleanups in uart_handle_dcd_change pps: Move timestamp read into PPS code proper pps: Don't crash the machine when exiting will do pps: Fix a use-after free bug when unregistering a source. pps: Use pps_lookup_dev to reduce ldisc coupling pps: Add pps_lookup_dev() function tty: serial: uartlite: Support uartlite on big and little endian systems tty: serial: uartlite: Fix sparse and checkpatch warnings serial/arc-uart: Miscll DT related updates (Grant's review comments) ... Fix up trivial conflicts, mostly just due to the TTY config option clashing with the EXPERIMENTAL removal.

pps: Move timestamp read into PPS code proper

2013-02-13T18:13:58Z

The PPS (Pulse-Per-Second) line discipline has developed a number of unhealthy attachments to core tty data and functions, ultimately leading to its breakage. The previous patches fixed the crashing. This one reduces coupling further by eliminating the timestamp parameter from the dcd_change ldisc method. This reduces header file linkage and makes the extension more generic, and the timestamp read is delayed only slightly, from just before the ldisc->ops->dcd_change method call to just after. Fix attendant build breakage in drivers/tty/n_tty.c drivers/tty/tty_buffer.c drivers/staging/speakup/selection.c drivers/staging/dgrp/dgrp_*.c Cc: William Hubbs Cc: Chris Brannon Cc: Kirk Reiser Cc: Samuel Thibault Signed-off-by: Peter Hurley Signed-off-by: George Spelvin Acked-by: Rodolfo Giometti Signed-off-by: Greg Kroah-Hartman

staging: dgrp: remove redundant NULL check before unregister_dgrp_device().

2013-02-13T16:46:48Z

unregister_dgrp_device on a NULL pointer is a no-op, so the NULL checks in dgrp_remove_nd() can be removed. Signed-off-by: Cyril Roelandt Signed-off-by: Greg Kroah-Hartman

staging: dgrp: prefix function names with dgrp_ in dgrp_specproc.c

2013-02-08T20:17:52Z

Prefix the functions in dgrp_specproc.c to avoid ambiguity in backtraces, such as the "info_proc_open" in this one: unreferenced object 0xffff88003b6696e0 (size 32): comm "cat", pid 2321, jiffies 4294705179 (age 29.434s) hex dump (first 32 bytes): 40 79 1c 81 ff ff ff ff 60 79 1c 81 ff ff ff ff @y......`y...... 50 79 1c 81 ff ff ff ff b0 62 89 81 ff ff ff ff Py.......b...... backtrace: [] kmemleak_alloc+0x21/0x50 [] kmem_cache_alloc_trace+0x11b/0x190 [] single_open+0x3c/0xc0 [] info_proc_open+0x15/0x20 [] proc_reg_open+0xb7/0x160 [] do_dentry_open+0x1cc/0x280 [] finish_open+0x4a/0x60 [] do_last+0xb07/0xdb0 [] path_openat+0xc2/0x4f0 [] do_filp_open+0x3c/0xa0 [] do_sys_open+0x11c/0x1c0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff Signed-off-by: Tommi Rantala Signed-off-by: Greg Kroah-Hartman

staging: dgrp: use correct release op for /proc/dgrp/info

2013-02-08T20:17:52Z

Trinity (the syscall fuzzer) discovered that reading /proc/dgrp/info was leaking some memory. Fix by using the correct release op in info_proc_file_ops. unreferenced object 0xffff88003b6696e0 (size 32): comm "cat", pid 2321, jiffies 4294705179 (age 29.434s) hex dump (first 32 bytes): 40 79 1c 81 ff ff ff ff 60 79 1c 81 ff ff ff ff @y......`y...... 50 79 1c 81 ff ff ff ff b0 62 89 81 ff ff ff ff Py.......b...... backtrace: [] kmemleak_alloc+0x21/0x50 [] kmem_cache_alloc_trace+0x11b/0x190 [] single_open+0x3c/0xc0 [] info_proc_open+0x15/0x20 [] proc_reg_open+0xb7/0x160 [] do_dentry_open+0x1cc/0x280 [] finish_open+0x4a/0x60 [] do_last+0xb07/0xdb0 [] path_openat+0xc2/0x4f0 [] do_filp_open+0x3c/0xa0 [] do_sys_open+0x11c/0x1c0 [] sys_open+0x1c/0x20 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff Signed-off-by: Tommi Rantala Signed-off-by: Greg Kroah-Hartman

staging: dgrp: check for a valid proc dir entry pointer

2013-01-22T16:58:44Z

while proc_create fails, the register_proc_table can do a derefernce of the null pointer causing to oops the system, instead check for a valid pointer at register and unregister Signed-off-by: Devendra Naga Signed-off-by: Greg Kroah-Hartman

tty: Added a CONFIG_TTY option to allow removal of TTY

2013-01-19T00:15:27Z

The option allows you to remove TTY and compile without errors. This saves space on systems that won't support TTY interfaces anyway. bloat-o-meter output is below. The bulk of this patch consists of Kconfig changes adding "depends on TTY" to various serial devices and similar drivers that require the TTY layer. Ideally, these dependencies would occur on a common intermediate symbol such as SERIO, but most drivers "select SERIO" rather than "depends on SERIO", and "select" does not respect dependencies. bloat-o-meter output comparing our previous minimal to new minimal by removing TTY. The list is filtered to not show removed entries with awk '$3 != "-"' as the list was very long. add/remove: 0/226 grow/shrink: 2/14 up/down: 6/-35356 (-35350) function old new delta chr_dev_init 166 170 +4 allow_signal 80 82 +2 static.__warned 143 142 -1 disallow_signal 63 62 -1 __set_special_pids 95 94 -1 unregister_console 126 121 -5 start_kernel 546 541 -5 register_console 593 588 -5 copy_from_user 45 40 -5 sys_setsid 128 120 -8 sys_vhangup 32 19 -13 do_exit 1543 1526 -17 bitmap_zero 60 40 -20 arch_local_irq_save 137 117 -20 release_task 674 652 -22 static.spin_unlock_irqrestore 308 260 -48 Signed-off-by: Joe Millenbach Reviewed-by: Jamey Sharp Reviewed-by: Josh Triplett Signed-off-by: Greg Kroah-Hartman

TTY: switch tty_flip_buffer_push

2013-01-16T06:30:15Z

Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. Now, the one where most of tty_port_tty_get gets removed: tty_flip_buffer_push. IOW we also closed all the races in drivers not using tty_port_tty_get at all yet. Also we move tty_flip_buffer_push declaration from include/linux/tty.h to include/linux/tty_flip.h to all others while we are changing it anyway. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman