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* watchdog: rt2880_wdt: fix return value check in rt288x_wdt_probe()Wei Yongjun2013-11-171-1/+1
| | | | | | | | | In case of error, the function devm_request_and_ioremap() returns NULL pointer not ERR_PTR(). Fix it by using devm_ioremap_resource() instead of devm_request_and_ioremap(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: watchdog_core: Fix a trivial typoSachin Kamat2013-11-171-1/+1
| | | | | | | | Fixed a trivial typo. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: dw: Enable OF support for DW watchdog timerDinh Nguyen2013-11-172-0/+31
| | | | | | | | | | | | | | | | | | Add device tree support to the DW watchdog timer. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Pavel Machek <pavel@denx.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: devicetree@vger.kernel.org Cc: linux-watchdog@vger.kernel.org
* watchdog: Get rid of MODULE_ALIAS_MISCDEV statementsJean Delvare2013-11-1787-112/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I just can't find any value in MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) and MODULE_ALIAS_MISCDEV(TEMP_MINOR) statements. Either the device is enumerated and the driver already has a module alias (e.g. PCI, USB etc.) that will get the right driver loaded automatically. Or the device is not enumerated and loading its driver will lead to more or less intrusive hardware poking. Such hardware poking should be limited to a bare minimum, so the user should really decide which drivers should be tried and in what order. Trying them all in arbitrary order can't do any good. On top of that, loading that many drivers at once bloats the kernel log. Also many drivers will stay loaded afterward, bloating the output of "lsmod" and wasting memory. Some modules (cs5535_mfgpt which gets loaded as a dependency) can't even be unloaded! If defining char-major-10-130 is needed then it should happen in user-space. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Mike Frysinger <vapier.adi@gmail.com> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Zwane Mwaikambo <zwane@arm.linux.org.uk> Cc: Jim Cromie <jim.cromie@gmail.com>
* watchdog: ts72xx_wdt: Propagate return value from timeout_to_regvalGuenter Roeck2013-11-171-1/+1
| | | | | | | timeout_to_regval() returns a valid error code. Might as well use it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: pcwd_usb: Use allocated buffer for usb_control_msgGuenter Roeck2013-11-171-1/+7
| | | | | | | | | | | | | usb_control_msg() must use a dma-capable buffer. This fixes the following error reported by smatch: drivers/watchdog/pcwd_usb.c:257 usb_pcwd_send_command() error: doing dma on the stack (buf) Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: sp805_wdt: Remove unnecessary amba_set_drvdata()Michal Simek2013-11-171-1/+0
| | | | | | | | | | | | | Driver core clears the driver data to NULL after device_release or on probe failure, so just remove it from here. Driver core change: "device-core: Ensure drvdata = NULL when no driver is bound" (sha1: 0998d0631001288a5974afc0b2a5f568bcdecb4d) Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: sirf: add watchdog driver of CSR SiRFprimaII and SiRFatlasVIXianglong Du2013-11-175-0/+249
| | | | | | | | | | | | | | | On CSR SiRFprimaII and SiRFatlasVI, the 6th timer can act as a watchdog timer when the Watchdog mode is enabled. watchdog occur when TIMER watchdog counter matches the value software pre-set, when this event occurs, the effect is the same as the system software reset. Signed-off-by: Xianglong Du <Xianglong.Du@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Cc: Romain Izard <romain.izard.pro@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: Remove redundant of_match_ptrSachin Kamat2013-11-173-3/+3
| | | | | | | | | | | | | | | | | | | | | | of_match_ptr() is a macro used to avoid undefined reference error if CONFIG_OF is used to selectively compile in or out the data structure. It is defined as follows: #ifdef CONFIG_OF #define of_match_ptr(ptr) ptr #else #define of_match_ptr(ptr) NULL #endif In the case of this series, none of the drivers use CONFIG_OF macro to compile out the data structure (i.e., the data structure is always defined). Hence the use of of_match_ptr() does not make any sense. Thus removing it to make the code look simpler for readability. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: ts72xx_wdt: cleanup return codes in ioctlDan Carpenter2013-11-171-20/+16
| | | | | | | | | | | | | | | | | | There seems to be some confusion here which functions return positive numbers and which return negative error codes. copy_to_user() returns the number of bytes remaining to be copied but we want to return -EFAULT. The rest is just clean up. get_user() actually returns zero on success and -EFAULT on error so we can preserve the error code. The timeout_to_regval() function returns -EINVAL on failure, but we can propogate that back instead of hardcoding -EINVAL ourselves. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> --
* documentation/devicetree: Move DT bindings from gpio to watchdogJohannes Thumshirn2013-11-171-0/+0
| | | | | | | | | | | | | | | | I accidently put the devicetree bindings for the MEN A21 watchdog driver in Documentation/devicetree/bindings/gpio instead of Documentation/devicetree/bindings/watchdog, this patch addresses this error. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de> Acked-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ian.campbell@citrix.com> Cc: Rob Landley <rob@landley.net>
* watchdog: add ralink watchdog driverJohn Crispin2013-11-174-0/+235
| | | | | | | | | | | | Add a driver for the watchdog timer found on Ralink SoC Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-watchdog@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: devicetree-discuss@lists.ozlabs.org
* watchdog: Add MOXA ART watchdog driverJonas Jensen2013-11-174-0/+191
| | | | | | | | | | | | | This patch adds a watchdog driver for the main hardware watchdog timer found on MOXA ART SoCs. The MOXA ART SoC provides one writable timer register, restarting the hardware once it reaches zero. The register is auto decremented every APB clock cycle. Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: kempld_wdt: Add __user annotationJingoo Han2013-11-171-2/+2
| | | | | | | | | | | | | | | Added __user annotation to fix the following sparse warnings. Also, it makes 'kempld_prescaler' static because it is used only in this file. drivers/watchdog/kempld_wdt.c:70:11: warning: symbol 'kempld_prescaler' was not declared. Should it be static? drivers/watchdog/kempld_wdt.c:364:23: warning: incorrect type in initializer (different address spaces) drivers/watchdog/kempld_wdt.c:364:23: expected int const [noderef] <asn:1>*register __p drivers/watchdog/kempld_wdt.c:364:23: got int *<noident> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: dw_wdt: Add __user annotationJingoo Han2013-11-171-2/+2
| | | | | | | | | | | | | | | | Added __user annotation to fix the following sparse warnings. drivers/watchdog/dw_wdt.c:206:38: warning: incorrect type in argument 1 (different address spaces) drivers/watchdog/dw_wdt.c:206:38: expected void [noderef] <asn:1>*to drivers/watchdog/dw_wdt.c:206:38: got struct watchdog_info *<noident> drivers/watchdog/dw_wdt.c:211:24: warning: incorrect type in initializer (different address spaces) drivers/watchdog/dw_wdt.c:211:24: expected int const [noderef] <asn:1>*register __p drivers/watchdog/dw_wdt.c:211:24: got int *<noident> Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Jamie Iles <jamie@jamieiles.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: use dev_get_platdata()Jingoo Han2013-11-177-12/+10
| | | | | | | | | Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: imx2_wdt: expose module alias for loading from device-treeNiels de Vos2013-11-171-0/+1
| | | | | | | | | Enable auto loading by udev when imx2_wdt is compiled as a module. Signed-off-by: Niels de Vos <ndevos@redhat.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: dw_wdt: use clk_prepare_enable and clk_disable_unprepareHeiko Stübner2013-11-171-5/+5
| | | | | | | | | This is necessary to make the driver work with platforms using the common clock framework. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: dw_wdt: convert to SIMPLE_DEV_PM_OPSHeiko Stübner2013-11-171-8/+3
| | | | | | | | | | The dw_wdt only provides PM_SLEEP operations, so convert the driver to use SIMPLE_DEV_PM_OPS instead of populating the struct manually. This has the added effect of simplifying the CONFIG_PM ifdefs. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds2013-11-1617-74/+358
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull CIFS fixes from Steve French: "A set of cifs fixes most important of which is Pavel's fix for some problems with handling Windows reparse points and also the security fix for setfacl over a cifs mount to Samba removing part of the ACL. Both of these fixes are for stable as well. Also added most of copychunk (copy offload) support to cifs although I expect a final patch in that series (to fix handling of larger files) in a few days (had to hold off on that in order to incorporate some additional code review feedback). Also added support for O_DIRECT on forcedirectio mounts (needed in order to run some of the server benchmarks over cifs and smb2/smb3 mounts)" * 'for-linus' of git://git.samba.org/sfrench/cifs-2.6: [CIFS] Warn if SMB3 encryption required by server setfacl removes part of ACL when setting POSIX ACLs to Samba [CIFS] Set copychunk defaults CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1 cifs: Use data structures to compute NTLMv2 response offsets [CIFS] O_DIRECT opens should work on directio mounts cifs: don't spam the logs on unexpected lookup errors cifs: change ERRnomem error mapping from ENOMEM to EREMOTEIO CIFS: Fix symbolic links usage
| * [CIFS] Warn if SMB3 encryption required by serverSteve French2013-11-152-0/+20
| | | | | | | | | | | | | | We do not support SMB3 encryption yet, warn if server responds that SMB3 encryption is mandatory. Signed-off-by: Steve French <smfrench@gmail.com>
| * setfacl removes part of ACL when setting POSIX ACLs to SambaSteve French2013-11-151-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setfacl over cifs mounts can remove the default ACL when setting the (non-default part of) the ACL and vice versa (we were leaving at 0 rather than setting to -1 the count field for the unaffected half of the ACL. For example notice the setfacl removed the default ACL in this sequence: steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir ; setfacl -m default:user:test:rwx,user:test:rwx /mnt/test-dir getfacl: Removing leading '/' from absolute path names user::rwx group::r-x other::r-x default:user::rwx default:user:test:rwx default:group::r-x default:mask::rwx default:other::r-x steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir getfacl: Removing leading '/' from absolute path names user::rwx user:test:rwx group::r-x mask::rwx other::r-x CC: Stable <stable@kernel.org> Signed-off-by: Steve French <smfrench@gmail.com> Acked-by: Jeremy Allison <jra@samba.org>
| * [CIFS] Set copychunk defaultsSteve French2013-11-152-1/+12
| | | | | | | | | | | | | | | | | | | | | | Patch 2 of the copy chunk series (the final patch will use these to handle copies of files larger than the chunk size. We set the same defaults that Windows and Samba expect for CopyChunk. Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: David Disseldorp <ddiss@samba.org>
| * CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1Steve French2013-11-144-1/+210
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This first patch adds the ability for us to do a server side copy (ie fast copy offloaded to the server to perform, aka refcopy) "cp --reflink" of one file to another located on the same server. This is much faster than traditional copy (which requires reading and writing over the network and extra memcpys). This first version is not going to be copy files larger than about 1MB (to Samba) until I add support for multiple chunks and for autoconfiguring the chunksize. It includes: 1) processing of the ioctl 2) marshalling and sending the SMB2/SMB3 fsctl over the network 3) simple parsing of the response It does not include yet (these will be in followon patches to come soon): 1) support for multiple chunks 2) support for autoconfiguring and remembering the chunksize 3) Support for the older style copychunk which Samba 4.1 server supports (because this requires write permission on the target file, which cp does not give you, apparently per-posix). This may require a distinct tool (other than cp) and other ioctl to implement. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: Use data structures to compute NTLMv2 response offsetsTim Gardner2013-11-112-17/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | A bit of cleanup plus some gratuitous variable renaming. I think using structures instead of numeric offsets makes this code much more understandable. Also added a comment about current time range expected by the server. Acked-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Shirish Pargaonkar <spargaonkar@suse.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * [CIFS] O_DIRECT opens should work on directio mountsSteve French2013-11-111-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Opens on current cifs/smb2/smb3 mounts with O_DIRECT flag fail even when caching is disabled on the mount. This was reported by those running SMB2 benchmarks who need to be able to pass O_DIRECT on many of their open calls to reduce caching effects, but would also be needed by other applications. When mounting with forcedirectio ("cache=none") cifs and smb2/smb3 do not go through the page cache and thus opens with O_DIRECT flag should work (when posix extensions are negotiated we even are able to send the flag to the server). This patch fixes that in a simple way. The 9P client has a similar situation (caching is often disabled) and takes the same approach to O_DIRECT support ie works if caching disabled, but if client caching enabled it fails with EINVAL. A followon idea for a future patch as Pavel noted, could be that files opened with O_DIRECT could cause us to change inode->i_fop on the fly from cifs_file_strict_ops to cifs_file_direct_ops which would allow us to support this on non-forcedirectio mounts (cache=strict and cache=loose) as well. Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: don't spam the logs on unexpected lookup errorsJeff Layton2013-11-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Andrey reported that he was seeing cifs.ko spam the logs with messages like this: CIFS VFS: Unexpected lookup error -26 He was listing the root directory of a server and hitting an error when trying to QUERY_PATH_INFO against hiberfil.sys and pagefile.sys. The right fix would be to switch the lookup code over to using FIND_FIRST, but until then we really don't need to report this at a level of KERN_ERR. Convert this message over to FYI level. Reported-by: "Andrey Shernyukov" <andreysh@nioch.nsc.ru> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * cifs: change ERRnomem error mapping from ENOMEM to EREMOTEIOJeff Layton2013-11-112-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes, the server will report an error that basically indicates that it's running out of resources. These include these under SMB1: NT_STATUS_NO_MEMORY NT_STATUS_SECTION_TOO_BIG NT_STATUS_TOO_MANY_PAGING_FILES ...and this one under SMB2: STATUS_NO_MEMORY Currently, this gets mapped to ENOMEM by the client, but that's confusing as an ENOMEM error is typically an indicator that the client is out of memory. Change these errors to instead map to EREMOTEIO to indicate that the problem is actually server-side and not on the client. Reported-by: "ISHIKAWA,chiaki" <ishikawa@yk.rim.or.jp> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Steve French <smfrench@gmail.com>
| * CIFS: Fix symbolic links usagePavel Shilovsky2013-11-116-49/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now we treat any reparse point as a symbolic link and map it to a Unix one that is not true in a common case due to many reparse point types supported by SMB servers. Distinguish reparse point types into two groups: 1) that can be accessed directly through a reparse point (junctions, deduplicated files, NFS symlinks); 2) that need to be processed manually (Windows symbolic links, DFS); and map only Windows symbolic links to Unix ones. Cc: <stable@vger.kernel.org> Acked-by: Jeff Layton <jlayton@redhat.com> Reported-and-tested-by: Joao Correia <joaomiguelcorreia@gmail.com> Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
* | Merge tag 'nfs-for-3.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds2013-11-165-24/+48
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client bugfixes: - Stable fix for data corruption when retransmitting O_DIRECT writes - Stable fix for a deep recursion/stack overflow bug in rpc_release_client - Stable fix for infinite looping when mounting a NFSv4.x volume - Fix a typo in the nfs mount option parser - Allow pNFS layouts to be compiled into the kernel when NFSv4.1 is * tag 'nfs-for-3.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: nfs: fix pnfs Kconfig defaults NFS: correctly report misuse of "migration" mount option. nfs: don't retry detect_trunking with RPC_AUTH_UNIX more than once SUNRPC: Avoid deep recursion in rpc_release_client SUNRPC: Fix a data corruption issue when retransmitting RPC calls
| * | nfs: fix pnfs Kconfig defaultsChristoph Hellwig2013-11-151-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | Defaulting to m seem to prevent building the pnfs layout modules into the kernel. Default to the value of CONFIG_NFS_V4 make sure they are built in for built-in NFSv4 support and modular for a modular NFSv4. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFS: correctly report misuse of "migration" mount option.NeilBrown2013-11-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current test on valid use of the "migration" mount option can never report an error as it will only do so if mnt->version !=4 && mnt->minor_version != 0 (and some other condition), but if that test would succeed, then the previous test has already gone-to out_minorversion_mismatch. So change the && to an || to get correct semantics. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | nfs: don't retry detect_trunking with RPC_AUTH_UNIX more than onceJeff Layton2013-11-131-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, when we try to mount and get back NFS4ERR_CLID_IN_USE or NFS4ERR_WRONGSEC, we create a new rpc_clnt and then try the call again. There is no guarantee that doing so will work however, so we can end up retrying the call in an infinite loop. Worse yet, we create the new client using rpc_clone_client_set_auth, which creates the new client as a child of the old one. Thus, we can end up with a *very* long lineage of rpc_clnts. When we go to put all of the references to them, we can end up with a long call chain that can smash the stack as each rpc_free_client() call can recurse back into itself. This patch fixes this by simply ensuring that the SETCLIENTID call will only be retried in this situation if the last attempt did not use RPC_AUTH_UNIX. Note too that with this change, we don't need the (i > 2) check in the -EACCES case since we now have a more reliable test as to whether we should reattempt. Cc: stable@vger.kernel.org # v3.10+ Cc: Chuck Lever <chuck.lever@oracle.com> Tested-by/Acked-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Avoid deep recursion in rpc_release_clientTrond Myklebust2013-11-121-12/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In cases where an rpc client has a parent hierarchy, then rpc_free_client may end up calling rpc_release_client() on the parent, thus recursing back into rpc_free_client. If the hierarchy is deep enough, then we can get into situations where the stack simply overflows. The fix is to have rpc_release_client() loop so that it can take care of the parent rpc client hierarchy without needing to recurse. Reported-by: Jeff Layton <jlayton@redhat.com> Reported-by: Weston Andros Adamson <dros@netapp.com> Reported-by: Bruce Fields <bfields@fieldses.org> Link: http://lkml.kernel.org/r/2C73011F-0939-434C-9E4D-13A1EB1403D7@netapp.com Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix a data corruption issue when retransmitting RPC callsTrond Myklebust2013-11-081-7/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following scenario can cause silent data corruption when doing NFS writes. It has mainly been observed when doing database writes using O_DIRECT. 1) The RPC client uses sendpage() to do zero-copy of the page data. 2) Due to networking issues, the reply from the server is delayed, and so the RPC client times out. 3) The client issues a second sendpage of the page data as part of an RPC call retransmission. 4) The reply to the first transmission arrives from the server _before_ the client hardware has emptied the TCP socket send buffer. 5) After processing the reply, the RPC state machine rules that the call to be done, and triggers the completion callbacks. 6) The application notices the RPC call is done, and reuses the pages to store something else (e.g. a new write). 7) The client NIC drains the TCP socket send buffer. Since the page data has now changed, it reads a corrupted version of the initial RPC call, and puts it on the wire. This patch fixes the problem in the following manner: The ordering guarantees of TCP ensure that when the server sends a reply, then we know that the _first_ transmission has completed. Using zero-copy in that situation is therefore safe. If a time out occurs, we then send the retransmission using sendmsg() (i.e. no zero-copy), We then know that the socket contains a full copy of the data, and so it will retransmit a faithful reproduction even if the RPC call completes, and the application reuses the O_DIRECT buffer in the meantime. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org
* | | Merge tag 'sound-fix-3.13-rc1' of ↵Linus Torvalds2013-11-1624-76/+803
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Two peaks in diffstat are for the audio EQ init of IDT codecs and the EMU2004 usb mixer addition, both of which are pretty device-specific, so safe to apply. The rest are a bunch of small fixes, most of them are regression fixes" * tag 'sound-fix-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits) ALSA: hda - load EQ params into IDT codec on HP bNB13 systems ASoC: cs42l52: Correct MIC CTL mask ASoC: wm8962: Turn on regcache_cache_only before disabling regulator ALSA: jack: Unregister input device at disconnection ALSA: pcsp: Fix the order of input device unregistration ASoC: fsl: imx-pcm-fiq: omit fiq counter to avoid harm in unbalanced situations ASoC: blackfin: Fix missing break ALSA: usb-audio: add front jack channel selector for EMU0204 ALSA: hda - Don't clear the power state at snd_hda_codec_reset() ASoC: arizona: Fix typo in name of EQ coefficient controls ALSA: hda - Control EAPD for Master volume on Lenovo N100 ALSA: hda - Don't turn off EAPD for headphone on Lenovo N100 ALSA: isa: not allocating enough space ALSA: snd-aoa: two copy and paste bugs ASoC: wm8997: Correct typo in ISRC mux routes ALSA: hda - Check keep_eapd_on before inv_eapd ALSA: hda - Fix Line Out automute on Realtek multifunction jacks ALSA: msnd: Avoid duplicated driver name ALSA: compress_core: don't return -EBADFD from poll if paused ALSA: hda - hdmi: Fix wrong baseline length in ATI/AMD generated ELD ...
| * \ \ Merge tag 'asoc-v3.13-4' of ↵Takashi Iwai2013-11-167-26/+34
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v3.13 A few fixes in drivers, the i.MX and wm8962 fixes are for a pretty nasty issues for users of those drivers if they run into them.
| | * \ \ Merge remote-tracking branch 'asoc/fix/wm8962' into asoc-linusMark Brown2013-11-151-0/+2
| | |\ \ \
| | | * | | ASoC: wm8962: Turn on regcache_cache_only before disabling regulatorNicolin Chen2013-11-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's safer to turn on regcache_cache_only before disabling regulator since the driver will turn off the regcache_cache_only after enabling regulator. If we remain cache_only false, some command like 'amixer cset' would get failure if being run before wm8962_resume(). Signed-off-by: Nicolin Chen <b42378@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
| | * | | | Merge remote-tracking branch 'asoc/fix/fsl' into asoc-linusMark Brown2013-11-1520-124/+209
| | |\ \ \ \
| | | * | | | ASoC: fsl: imx-pcm-fiq: omit fiq counter to avoid harm in unbalanced situationsOskar Schirmer2013-11-141-12/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unbalanced calls to snd_imx_pcm_trigger() may result in endless FIQ activity and thus provoke eternal sound. While on the first glance, the switch statement looks pretty symmetric, the SUSPEND/RESUME pair is not: the suspend case comes along snd_pcm_suspend_all(), which for fsl/imx-pcm-fiq is called only at snd_soc_suspend(), but the resume case originates straight from the SNDRV_PCM_IOCTL_RESUME. This way userland may provoke an unbalanced resume, which might cause the fiq_enable counter to increase and never return to zero again, so eventually imx_pcm_fiq is never disabled. Simply removing the fiq_enable will solve the problem, as long as one never goes play and capture game simultaneously, but beware trying both at once, the early TRIGGER_STOP will cut off the other activity prematurely. So now playing and capturing is scrutinized separately, instead of by counting. Signed-off-by: Oskar Schirmer <oskar@scara.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
| | * | | | | Merge remote-tracking branch 'asoc/fix/dma' into asoc-linusMark Brown2013-11-151-1/+3
| | |\ \ \ \ \
| | * \ \ \ \ \ Merge remote-tracking branch 'asoc/fix/cs42l52' into asoc-linusMark Brown2013-11-151-1/+1
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| | | * | | | | | ASoC: cs42l52: Correct MIC CTL maskBrian Austin2013-11-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mask for CS42L52_MIC_CTL_TYPE_MASK was wrong keeping the mic config from being set correctly. Signed-off-by: Brian Austin <brian.austin@cirrus.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
| | * | | | | | | Merge remote-tracking branch 'asoc/fix/blackfin' into asoc-linusMark Brown2013-11-151-0/+1
| | |\ \ \ \ \ \ \
| | | * | | | | | | ASoC: blackfin: Fix missing breakTakashi Iwai2013-11-131-0/+1
| | | | |_|_|/ / / | | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes: 4b2ffc205cb9 ('ASoC: Blackfin I2S: add 8-bit sample support') Reported-by: David Binderman Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org
| | * | | | | | | Merge remote-tracking branch 'asoc/fix/arizona' into asoc-linusMark Brown2013-11-15133-3037/+4209
| | |\ \ \ \ \ \ \ | | | |_|/ / / / / | | |/| | | | | |
| | | * | | | | | ASoC: arizona: Fix typo in name of EQ coefficient controlsRichard Fitzgerald2013-11-133-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| | | * | | | | | ASoC: wm8997: Correct typo in ISRC mux routesCharles Keepax2013-11-121-1/+1
| | | |/ / / / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@linaro.org>
| * | | | | | | ALSA: hda - load EQ params into IDT codec on HP bNB13 systemsVitaliy Kulikov2013-11-151-1/+531
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds linear EQ filtering for integrated speaker protection Signed-off-by: Vitaliy Kulikov <vitaliy.kulikov@idt.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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