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2008-08-02pkt_sched: Make sure RTNL is held in qdisc_root_lock().David S. Miller
It is the only legal environment in which this can be used. Add some commentary explaining the situation. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-02mac80211: Use queue_lock() in ieee80211_ht_agg_queue_remove().David S. Miller
qdisc_root_lock() is only %100 safe to use when the RTNL semaphore is held. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-02pkt_sched: Use qdisc_lock() on already sampled root qdisc.David S. Miller
Based upon a bug report by Jeff Kirsher. Don't use qdisc_root_lock() in these cases as the root qdisc could have been changed, and we'd thus lock the wrong object. Tested by Emil S Tantilov who confirms that this seems to fix the problem. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-02ext4: remove write-only variables from ext4_ordered_write_endEric Sandeen
The variables 'from' and 'to' are not used anywhere. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2008-08-03sh/boards/Makefile typo fixAdrian Bunk
The following build error was caused by an obvious typo: <-- snip --> ... LD arch/sh/mm/built-in.o make[2]: *** No rule to make target `arch/sh/boards/board-shmin..o', needed by `arch/sh/boards/built-in.o'. Stop. <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02[ARM] Fix explicit asm(-arm)?/arch-foo referencesRussell King
No file should be explicitly referencing its own platform headers by specifying an absolute include path. Fix these paths to use standard <asm/arch/...> includes. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-02[ARM] move include/asm-arm to arch/arm/include/asmRussell King
Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/plat* alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-02firewire: Preserve response data alignment bug when it is harmlessDavid Moore
Recently, a bug having to do with the alignment of transaction response data was fixed. However, some apps such as libdc1394 relied on the presence of that bug in order to function correctly. In order to stay compatible with old versions of those apps, this patch preserves the bug in cases where it is harmless to normal operation (such as the single quadlet read) due to a simple duplication of data. This guarantees maximum compatability for those users who are using the old app with the fixed kernel. Signed-off-by: David Moore <dcm@acm.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2008-08-02Fix IHEX firmware generation/loadingMarc Zyngier
Fix both the IHEX firmware generation (len field always null, and EOF marker a byte too short) and loading (struct ihex_binrec needs to be packed to reflect the on-disk structure). Signed-off-by: Marc Zyngier <maz@misterjones.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-02Merge git://git.infradead.org/users/dwmw2/random-2.6Linus Torvalds
* git://git.infradead.org/users/dwmw2/random-2.6: [MTD] Fix !CONFIG_BLOCK compile for mtdsuper.c firmware: silence __fw_modbuild and __fw_modinst 'Nothing to be done' messages
2008-08-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Do not clobber %g7 in setcontext() trap. sparc64: Kill __show_regs(). sparc: Add __KERNEL__ ifdef protection to pt_regs helpers. sparc64: Kill smp_report_regs(). sparc64: Kill VERBOSE_SHOWREGS code. sparc64: Hook up trigger_all_cpu_backtrace(). sparc64: Make global reg dumping even more useful. sparc: Ignore drivers/video/console/promcon_tbl.c conmakehash generated file sparc64: FUTEX_OP_ANDN fix sparc: merge of_platform_{32,64}.h sparc64: Kill isa_bus_type. sparc64: Fix global reg snapshotting on self-cpu.
2008-08-02fat: Fix allow_utime optionOGAWA Hirofumi
FAT has to handle the newly introduced ATTR_TIMES_SET for allow_utime option. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-02mm: dont clear PG_uptodate on truncate/invalidateMiklos Szeredi
Brian Wang reported that a FUSE filesystem exported through NFS could return I/O errors on read. This was traced to splice_direct_to_actor() returning a short or zero count when racing with page invalidation. However this is not FUSE or NFSD specific, other filesystems (notably NFS) also call invalidate_inode_pages2() to purge stale data from the cache. If this happens while such pages are sitting in a pipe buffer, then splice(2) from the pipe can return zero, and read(2) from the pipe can return ENODATA. The zero return is especially bad, since it implies end-of-file or disconnected pipe/socket, and is documented as such for splice. But returning an error for read() is also nasty, when in fact there was no error (data becoming stale is not an error). The same problems can be triggered by "hole punching" with madvise(MADV_REMOVE). Fix this by not clearing the PG_uptodate flag on truncation and invalidation. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-02Add DIP switch readout for HFC-4S IOB4STKarsten Keil
Also the HFC-4S IOB4ST has DIP switches and jumpers to configure the port. Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-02Fix remaining big endian issue of hfcmultiKarsten Keil
The driver was not so bad at big endian at all, only the optimised fifo read/write functions need a fix, with this fix the driver works on a pegasus PPC machine. Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-02mISDN cleanup user interfaceKarsten Keil
The channelmap should have the same size on 32 and 64 bit systems and should not depend on endianess. Thanks to David Woodhouse for spotting this. Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-02mISDN fix main ISDN MakefileKarsten Keil
Compile hardware directory independent from selecting CAPI support. Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-08-02[ARM] Remove explicit dependency for misc.o from compressed/MakefileRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-02rt2x00: Fix compile warningIvo van Doorn
rt2x00usb_vendor_request_large_buff is write-only, so it is safe to make the argument a const. Fixes compile warning: drivers/net/wireless/rt2x00/rt73usb.c: In function 'rt73usb_load_firmware': drivers/net/wireless/rt2x00/rt73usb.c:916: warning: passing argument 5 of 'rt2x00usb_vendor_request_large_buff' discards qualifiers from pointer target typ Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-02[MTD] Fix !CONFIG_BLOCK compile for mtdsuper.cDavid Woodhouse
As reported by Adrian Bunk, commit d5686b444ff3f72808d2b3fbd58672a86cdf38e7 (switch mtd and dm-table to lookup_bdev()) causes the following compile error with CONFIG_BLOCK=n: CC drivers/mtd/mtdsuper.o drivers/mtd/mtdsuper.c: In function `get_sb_mtd': drivers/mtd/mtdsuper.c:184: error: implicit declaration of function 'lookup_bdev' drivers/mtd/mtdsuper.c:184: warning: assignment makes pointer from integer without a cast drivers/mtd/mtdsuper.c:197: error: implicit declaration of function 'bdput' make[3]: *** [drivers/mtd/mtdsuper.o] Error 1 Fix it by putting the block device lookup inside #ifdef CONFIG_BLOCK Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-02firmware: silence __fw_modbuild and __fw_modinst 'Nothing to be done' messagesDavid Woodhouse
People don't like them and think they're errors. Leave the __fw_install one though; when 'make firmware_install' does nothing, it's best to have a 'Nothing to be done for...' message rather than just doing nothing. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-01Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2008-08-02sh: fix LIBGCCAdrian Bunk
Commit f15cbe6f1a4b4d9df59142fc8e4abb973302cf44 (sh: migrate to arch/sh/include/) moved KBUILD_CFLAGS (which is used by LIBGCC) below LIBGCC, causing build errors like the following: <-- snip --> ... LD .tmp_vmlinux1 arch/sh/kernel/built-in.o: In function `module_clk_recalc': clock-sh4.c:(.text+0x80f0): undefined reference to `__udivsi3_i4i' ... make[1]: *** [.tmp_vmlinux1] Error 1 <-- snip --> Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: Revert the location change of auto-generated asm/machtypes.hPaul Mundt
This ended up causing build breakage on O= builds, as reported by Adrian: <-- snip --> ... CC init/main.o In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/include/asm/irq.h:4, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/irq.h:23, from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/include/asm/hardirq.h:5, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/hardirq.h:7, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/asm-generic/local.h:5, from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/include/asm/local.h:4, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/module.h:19, from /home/bunk/linux/kernel-2.6/git/linux-2.6/init/main.c:13: /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/include/asm/machvec.h:15:27: error: asm/machtypes.h: No such file or directory make[2]: *** [init/main.o] Error 1 <-- snip --> So we simply move machtypes.h back to its original place. asm-offsets.h is still generated there regardless, until such a time that we find a better place to stash auto-generated files. Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-01Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Move include/asm-ia64 to arch/ia64/include/asm
2008-08-01embedded: fix vc_translate operator precedenceTim Bird
This fixes a bug in operator precedence in the newly introduced vc_translate macro. Without this fix, the translation of some characters on the kernel console is garbled. This patch was copied to the e-mail list previously for testing. Now, all reports confirm that it works, so this is an official post for application. Signed-off-by: Tim Bird <tim.bird@am.sony.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-08-01Remove EXPORTS of follow_page & zap_page_rangeJack Steiner
Delete 2 EXPORTs that were accidentally sent upstream. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01dual license ftrace.txtSteven Rostedt
I asked legal about the licensing of ftrace.txt, and they told me that, unless the Documentation directory is specifically set up to handle non GPL licenses (which it does not appear to be), then it would be best to put ftrace.txt under the GPL. This patch adds a dual license to ftrace.txt such that it is under both the FDL and the GPL. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01FRV: Wire up new system callsDavid Howells
Wire up for FRV the system calls that were added in the last merge window. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01MN10300: Wire up new system callsDavid Howells
Wire up system calls added in the last merge window for the MN10300 arch. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01try harder to load tty ldisc driverEugeniy Meshcheryakov
Currently function tty_ldisc_get() tries to load an ldisc driver module only when tty_ldisc_try_get() returns -EAGAIN. This happens only if module is being unloaded. If ldisc module is not loaded tty_ldisc_try_get() returns -EINVAL and this case is not handled in tty_ldisc_get(), so request_module() is not called. Attached patch fixes this by calling request_module() if tty_ldisc_try_get() returned any error code. I discovered this when my UMTS modem stopped working with 2.6.27-rc1 because module ppp_async was not loaded. Signed-off-by: Eugeniy Meshcheryakov <eugen@debian.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01Merge branch 'kvm-updates-2.6.27' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm * 'kvm-updates-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: KVM: s390: Fix kvm on IBM System z10 KVM: Advertise synchronized mmu support to userspace KVM: Synchronize guest physical memory map to host virtual memory map KVM: Allow browsing memslots with mmu_lock KVM: Allow reading aliases with mmu_lock
2008-08-01Merge branch 'zero-len' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'zero-len' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6: drivers/media, include/media: delete zero-length files
2008-08-01mm/hugetlb: don't crash when HPAGE_SHIFT is 0Benjamin Herrenschmidt
Some platform decide whether they support huge pages at boot time. On these, such as powerpc, HPAGE_SHIFT is a variable, not a constant, and is set to 0 when there is no such support. The patches to introduce multiple huge pages support broke that causing the kernel to crash at boot time on machines such as POWER3 which lack support for multiple page sizes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01Missing symbol prefix on vmlinux.lds.hYoshinori Sato
ARCH=h8300: init/main.c:781: undefined reference to `___early_initcall_end' Same problem have __start___bug_table __stop___bug_table __tracedata_start __tracedata_end __per_cpu_start __per_cpu_end When defining a symbol in vmlinux.lds, use the VMLINUX_SYMBOL macro. VMLINUX_SYMBOL adds a prefix charactor. You can't just use straight symbol names in common header files as they dont take into consideration weird arch-specific ABI conventions. in the case of Blackfin/h8300, the ABI dictates that any C-visible symbols have an underscore prefixed to them. Thus all symbols in vmlinux.lds.h need to be wrapped in VMLINUX_SYMBOL() so that each arch can put hide this magic in their own files. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: "Mike Frysinger" <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01PNP: fix formatting of dbg_pnp_show_resources() outputBjorn Helgaas
Each resource should be printed on its own line, so start snprintf'ing at the beginning of the buffer every time through the loop. Also, use scnprintf() rather than snprintf() when building up the buffer to print. scnprintf() returns the number of characters actually written into the buffer (not including the trailing NULL). snprintf() returns the number of characters that *would be* written, assuming everything would fit in the buffer. That's nice if we want to resize the buffer to make sure everything fits, but in this case, I just want to keep from overflowing the buffer, and it's OK if the output is truncated. Using snprintf() meant that my "len" could grow to be more than the the buffer size, which makes "sizeof(buf) - len" negative, which causes this alarming WARN_ON: http://marc.info/?l=linux-kernel&m=121736480005656&w=2 More useful snprintf/scnprintf discussion: http://lwn.net/Articles/69419/ Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reported-by: Pete Clements <clem@clem.clem-digital.net> Cc: Rene Herman <rene.herman@keyaccess.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01Remove newline from the description of module parametersNiels de Vos
Some module parameters with only one line have the '\n' at the end of the description. This is not needed nor wanted as after the description the type (i.e. int) is followed by a newline. Some modules contain a multi-line description, these are not affected by this patch. Signed-off-by: Niels de Vos <niels.devos@wincor-nixdorf.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: John W. Linville <linville@tuxdriver.com> Cc: Ed L. Cashin <ecashin@coraid.com> Cc: Dave Airlie <airlied@linux.ie> Cc: Roland Dreier <rolandd@cisco.com> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-01Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata_it821x: Driver updates and reworking libata.h: replace __FUNCTION__ with __func__ ata_piix: subsys 106b:00a3 is apple ich8m too libata-core: make sure that ata_force_tbl is freed in case of an error libata: update atapi disable handling pata_via: add VX800 flag; add function for fixing h/w bugs pata_ali: misplaced pci_dev_put()
2008-08-02net: stnic: Fix up fallout from SH header migration.Paul Mundt
asm/se.h moved to mach-se/mach/se.h, update the path. We could use mach/se.h here also, but it's preferable to be explicit when there's only a single supported mach-type. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: Fix up the audit arch endian specification.Paul Mundt
Presently this was always being set to AUDIT_ARCH_SH, which assumes big endian. Fix this up so that the architecture actually reflects what we're running on. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: Make syscall tracer use tracehook notifiers, add TIF_NOTIFY_RESUME.Paul Mundt
This follows the changes in commits: 7d6d637dac2050f30a1b57b0a3dc5de4a10616ba 4f72c4279eab1e5f3ed1ac4e55d4527617582392 on powerpc. Adding in TIF_NOTIFY_RESUME, and cleaning up the syscall tracing to be more generic. This is an incremental step to turning on tracehook, as well as unifying more of the ptrace and signal code across the 32/64 split. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: ptrace single stepping cleanups.Paul Mundt
This converts the single stepping done by sh/sh64 ptrace implementations to use the generic user_enable/disable_single_step(), and subsequently rips out a lot of ptrace request cases that are now handled generically. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: seccomp support.Paul Mundt
This hooks up the seccomp thread flag and associated callback from the syscall tracer. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02sh: Tidy up the _TIF work masks, and fix syscall trace bug on singlestep.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-02kdump: sh: parse elfcorehdr command line argumentSimon Horman
A quick cut and paste from other architectures to allow SH to parse the elfcorehdr command line argument which is required for both is_kdump_kernel() and vmcore to function. (the former is as yet unused on SH). Tested compilation only Signed-off-by: Simon Horman <horms@verge.net.au> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-08-01Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-pullLinus Torvalds
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-pull: (64 commits) [XFS] Remove vn_revalidate calls in xfs. [XFS] Now that xfs_setattr is only used for attributes set from ->setattr [XFS] xfs_setattr currently doesn't just handle the attributes set through [XFS] fix use after free with external logs or real-time devices [XFS] A bug was found in xfs_bmap_add_extent_unwritten_real(). In a [XFS] fix compilation without CONFIG_PROC_FS [XFS] s/XFS_PURGE_INODE/IRELE/g s/VN_HOLD(XFS_ITOV())/IHOLD()/ [XFS] fix mount option parsing in remount [XFS] Disable queue flag test in barrier check. [XFS] streamline init/exit path [XFS] Fix up problem when CONFIG_XFS_POSIX_ACL is not set and yet we still [XFS] Don't assert if trying to mount with blocksize > pagesize [XFS] Don't update mtime on rename source [XFS] Allow xfs_bmbt_split() to fallback to the lowspace allocator [XFS] Restore the lowspace extent allocator algorithm [XFS] use minleft when allocating in xfs_bmbt_split() [XFS] attrmulti cleanup [XFS] Check for invalid flags in xfs_attrlist_by_handle. [XFS] Fix CI lookup in leaf-form directories [XFS] Use the generic xattr methods. ...
2008-08-01iwl3945: Fix statistics in monitor modeMaxim Levitsky
iwl3945_rx_reply_rx was sending packets too early to mac80211, before updating signal strength/quality. This resulted in garbage power levels. Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-01prism54 - Use offsetof()Takashi Iwai
Use the standard offsetof() macro to fix a compile warning below: CC [M] drivers/net/wireless/prism54/isl_ioctl.o drivers/net/wireless/prism54/isl_ioctl.c: In function 'prism2_ioctl_set_generic_element': drivers/net/wireless/prism54/isl_ioctl.c:2658: warning: cast from pointer to integer of different size Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-01ipw2200 - Fix bad ipw_write8() macroTakashi Iwai
ipw_write8() can't be used alone with a loop because of a wrong definition. CC [M] drivers/net/wireless/ipw2200.o drivers/net/wireless/ipw2200.c: In function 'ipw_ethtool_set_eeprom': drivers/net/wireless/ipw2200.c:10579: warning: array subscript is above array bounds drivers/net/wireless/ipw2200.c: In function 'ipw_load': drivers/net/wireless/ipw2200.c:2663: warning: array subscript is above array bounds Add missing do {} while (0) to fix them. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-08-01rtl8187: Fix lockups due to concurrent access to config routineLarry Finger
Some users of the RTL8187B have experienced difficulties since commit 49292d56352a6ab90d04c3448dd8b6106dfef2d6 that introduced the power management wext hooks. This difficulty has not made much sense until it was realized that it was possible for mac80211 to make a call to the config routine while that routine was already being executed. On this device, it is necessary to loopback the TX when changing channels. Unless this is properly restored, the device will lockup. A mutex now protects the device state, and the private data in several places. The problem was found by Herton Ronaldo Krzesinski <herton@mandriva.com.br>, who also suggested this type of fix. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Acked-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br> Acked-by: Hin-Tak Leung <htl10@users.sourceforge.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
generated by cgit (git 2.34.1) at 2025-09-20 17:08:37 +0000