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2008-08-23pcmcia: deprecate CS_SUCCESSDominik Brodowski
Instead of using own error or success codes, the PCMCIA code should rely on the generic return values. Therefore, replace all occurrences of CS_SUCCESS with 0. CC: netdev@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2008-08-23pcmcia: pcmcia_config_loop() improvement by passing vccDominik Brodowski
By passing the current Vcc setting to the pcmcia_config_loop callback function, we can remove pcmcia_get_configuration_info() calls from many drivers. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2008-08-23pcmcia: pcmcia_config_loop() default CIS entry handlingDominik Brodowski
Many drivers use the default CIS entry within their pcmcia_config_loop() callback function. Therefore, factor the default CIS entry handling out. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2008-08-23pcmcia: pcmcia_config_loop() ConfigIndex unificationDominik Brodowski
Almost all drivers set p_dev->conf.ConfigIndex to cfg->index in the pcmcia_config_loop() callback function. Therefore, factor it out. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2008-08-23pcmcia: use pcmcia_loop_config in bluetooth driversDominik Brodowski
Use the config loop helper in bluetooth pcmcia drivers. CC: Marcel Holtmann <marcel@holtmann.org> CC: linux-bluetooth@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2008-07-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits) iucv: Fix bad merging. net_sched: Add size table for qdiscs net_sched: Add accessor function for packet length for qdiscs net_sched: Add qdisc_enqueue wrapper highmem: Export totalhigh_pages. ipv6 mcast: Omit redundant address family checks in ip6_mc_source(). net: Use standard structures for generic socket address structures. ipv6 netns: Make several "global" sysctl variables namespace aware. netns: Use net_eq() to compare net-namespaces for optimization. ipv6: remove unused macros from net/ipv6.h ipv6: remove unused parameter from ip6_ra_control tcp: fix kernel panic with listening_get_next tcp: Remove redundant checks when setting eff_sacks tcp: options clean up tcp: Fix MD5 signatures for non-linear skbs sctp: Update sctp global memory limit allocations. sctp: remove unnecessary byteshifting, calculate directly in big-endian sctp: Allow only 1 listening socket with SO_REUSEADDR sctp: Do not leak memory on multiple listen() calls sctp: Support ipv6only AF_INET6 sockets. ...
2008-07-20tty: Ldisc revampAlan Cox
Move the line disciplines towards a conventional ->ops arrangement. For the moment the actual 'tty_ldisc' struct in the tty is kept as part of the tty struct but this can then be changed if it turns out that when it all settles down we want to refcount ldiscs separately to the tty. Pull the ldisc code out of /proc and put it with our ldisc code. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-07-18Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
2008-07-15bluetooth/hci_bcsp: fix bitrev KconfigRandy Dunlap
Fix bluetooth hci_bcsp Kconfig to avoid build errors: drivers/built-in.o: In function `bcsp_prepare_pkt': hci_bcsp.c:(.text+0x7e9ac): undefined reference to `bitrev16' drivers/built-in.o: In function `bcsp_recv': hci_bcsp.c:(.text+0x7f276): undefined reference to `bitrev16' hci_bcsp.c:(.text+0x7f293): undefined reference to `bitrev16' make[1]: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Ackey-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-14Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6Linus Torvalds
* 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6: (64 commits) firmware: convert sb16_csp driver to use firmware loader exclusively dsp56k: use request_firmware edgeport-ti: use request_firmware() edgeport: use request_firmware() vicam: use request_firmware() dabusb: use request_firmware() cpia2: use request_firmware() ip2: use request_firmware() firmware: convert Ambassador ATM driver to request_firmware() whiteheat: use request_firmware() ti_usb_3410_5052: use request_firmware() emi62: use request_firmware() emi26: use request_firmware() keyspan_pda: use request_firmware() keyspan: use request_firmware() ttusb-budget: use request_firmware() kaweth: use request_firmware() smctr: use request_firmware() firmware: convert ymfpci driver to use firmware loader exclusively firmware: convert maestro3 driver to use firmware loader exclusively ... Fix up trivial conflicts with BKL removal in drivers/char/dsp56k.c and drivers/char/ip2/ip2main.c manually.
2008-07-10bluetooth: treat firmware data as constDavid Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2008-07-02Bluetooth VHCI: fasync BKL pushdownJonathan Corbet
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20bluetooth-vhci: BKL pushdownArnd Bergmann
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-06-10bluetooth: hci_bcsp.c small cleanups/api usersHarvey Harrison
Use bitrev16 from lib/bitrev.c. Use the get_unaligned_be16 to get the crc from the packet, create a small helper function for this. Fix a shadowed variable sparse warning: drivers/bluetooth/hci_bcsp.c:218:26: warning: symbol 'hdr' shadows an earlier one drivers/bluetooth/hci_bcsp.c:187:5: originally declared here [akpm@linux-foundation.org: select CONFIG_BITREVERSE, noted by akinobu.mita@gmail.com] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-05-02hci_usb.h: fix hard-to-trigger racePavel Machek
If someone tries to _urb_unlink while _urb_queue_head is running, he'll see _urb->queue == NULL and fail to do any locking. Prevent that from happening by strategically placed barriers. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-30tty: add throttle/unthrottle helpersAlan Cox
Something Arjan suggested which allows us to clean up the code nicely Signed-off-by: Alan Cox <alan@redhat.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-30tty: The big operations reworkAlan Cox
- Operations are now a shared const function block as with most other Linux objects - Introduce wrappers for some optional functions to get consistent behaviour - Wrap put_char which used to be patched by the tty layer - Document which functions are needed/optional - Make put_char report success/fail - Cache the driver->ops pointer in the tty as tty->ops - Remove various surplus lock calls we no longer need - Remove proc_write method as noted by Alexey Dobriyan - Introduce some missing sanity checks where certain driver/ldisc combinations would oops as they didn't check needed methods were present [akpm@linux-foundation.org: fix fs/compat_ioctl.c build] [akpm@linux-foundation.org: fix isicom] [akpm@linux-foundation.org: fix arch/ia64/hp/sim/simserial.c build] [akpm@linux-foundation.org: fix kgdb] Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-19hci_usb: remove code obfuscationPavel Machek
_urb_free is an alias for kfree... making code longer & harder to read. Remove it. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-04-19hci_usb: do not initialize static variables to 0Pavel Machek
hci_usb: do not initialize static variables to 0. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) [SCTP]: Fix local_addr deletions during list traversals. net: fix build with CONFIG_NET=n [TCP]: Prevent sending past receiver window with TSO (at last skb) rt2x00: Add new D-Link USB ID rt2x00: never disable multicast because it disables broadcast too libertas: fix the 'compare command with itself' properly drivers/net/Kconfig: fix whitespace for GELIC_WIRELESS entry [NETFILTER]: nf_queue: don't return error when unregistering a non-existant handler [NETFILTER]: nfnetlink_queue: fix EPERM when binding/unbinding and instance 0 exists [NETFILTER]: nfnetlink_log: fix EPERM when binding/unbinding and instance 0 exists [NETFILTER]: nf_conntrack: replace horrible hack with ksize() [NETFILTER]: nf_conntrack: add \n to "expectation table full" message [NETFILTER]: xt_time: fix failure to match on Sundays [NETFILTER]: nfnetlink_log: fix computation of netlink skb size [NETFILTER]: nfnetlink_queue: fix computation of allocated size for netlink skb. [NETFILTER]: nfnetlink: fix ifdef in nfnetlink_compat.h [NET]: include <linux/types.h> into linux/ethtool.h for __u* typedef [NET]: Make /proc/net a symlink on /proc/self/net (v3) RxRPC: fix rxrpc_recvmsg()'s returning of msg_name net/enc28j60: oops fix ...
2008-03-07bluetooth: Add another Broadcom deviceKarsten Keil
This adds another Broadcom BCM2045 based device to the blacklist, with these settings the micro dongle works on my system. Signed-off-by: Karsten Keil <kkeil@suse.de> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-05bluetooth: CONWISE Technology based adapters with buggy SCO support ↵SDiZ
(bugzilla #9027) From: SDiZ <sdiz@sdiz.net> Fix the CONWISE Technology based adapters with buggy SCO support issue (bugzilla #9027) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-12hci_ldisc: fix null pointer derefDavid Newall
Arjan: With the help of kerneloops.org I've spotted a nice little interaction between the TTY layer and the bluetooth code, however the tty layer is not something I'm all too familiar with so I rather ask than brute-force fix the code incorrectly. The raw details are at: http://www.kerneloops.org/search.php?search=uart_flush_buffer What happens is that, on closing the bluetooth tty, the tty layer goes into the release_dev() function, which first does a bunch of stuff, then sets the file->private_data to NULL, does some more stuff and then calls the ldisc close function. Which in this case, is hci_uart_tty_close(). Now, hci_uart_tty_close() calls hci_uart_close() which clears some internal bit, and then calls hci_uart_flush()... which calls back to the tty layers' uart_flush_buffer() function. (in drivers/bluetooth/hci_tty.c around line 194) Which then WARN_ON()'s because that's not allowed/supposed to be called this late in the shutdown of the port.... Should the bluetooth driver even call this flush function at all?? David: This seems to be what happens: Hci_uart_close() flushes using hci_uart_flush(). Subsequently, in hci_dev_do_close(), (one step in hci_unregister_dev()), hci_uart_flush() is called again. The comment in uart_flush_buffer(), relating to the WARN_ON(), indicates you can't flush after the port is closed; which sounds reasonable. I think hci_uart_close() should set hdev->flush to NULL before returning. Hci_dev_do_close() does check for this. The code path is rather involved and I'm not entirely clear of all steps, but I think that's what should be done. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits) [PKT_SCHED]: vlan tag match [NET]: Add if_addrlabel.h to sanitized headers. [NET] rtnetlink.c: remove no longer used functions [ICMP]: Restore pskb_pull calls in receive function [INET]: Fix accidentally broken inet(6)_hash_connect's port offset calculations. [NET]: Remove further references to net-modules.txt bluetooth rfcomm tty: destroy before tty_close() bluetooth: blacklist another Broadcom BCM2035 device drivers/bluetooth/btsdio.c: fix double-free drivers/bluetooth/bpa10x.c: fix memleak bluetooth: uninlining bluetooth: hidp_process_hid_control remove unnecessary parameter dealing tun: impossible to deassert IFF_ONE_QUEUE or IFF_NO_PI hamradio: fix dmascc section mismatch [SCTP]: Fix kernel panic while received AUTH chunk with BAD shared key identifier [SCTP]: Fix kernel panic while received AUTH chunk while enabled auth [IPV4]: Formatting fix for /proc/net/fib_trie. [IPV6]: Fix sysctl compilation error. [NET_SCHED]: Add #ifdef CONFIG_NET_EMATCH in net/sched/cls_flow.c (latest git broken build) [IPV4]: Fix compile error building without CONFIG_FS_PROC ...
2008-02-05pcmcia: replace kio_addr_t with unsigned int everywhereOlof Johansson
Remove kio_addr_t, and replace it with unsigned int. No known architecture needs more than 32 bits for IO addresses and ports and having a separate type for it is just messy. Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05bluetooth: blacklist another Broadcom BCM2035 deviceAndy Shevchenko
This device is recognized as bluetooth, but still not works. Signed-off-by: Andy Shevchenko <andy@smile.org.ua> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-05drivers/bluetooth/btsdio.c: fix double-freeAdrian Bunk
This patch fixes a double-free spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-05drivers/bluetooth/bpa10x.c: fix memleakAdrian Bunk
This patch fixea a memleak spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-03drivers/bluetooth/: Spelling fixesJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
2008-01-10[BLUETOOTH]: Always send explicit hci_ll wake-up acks.Ohad Ben-Cohen
In the (rare) event of simultaneous mutual wake up requests, do send the chip an explicit wake-up ack. This is required for Texas Instruments's BRF6350 chip. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-22[Bluetooth] Add generic driver for Bluetooth USB devicesMarcel Holtmann
This patch adds a new generic driver for Bluetooth USB devices. This driver is still experimental at this point, but it is cleaner and easier to maintain than the current Bluetooth USB driver. It is a much better starting point for power management improvements. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Add generic driver for Bluetooth SDIO devicesMarcel Holtmann
This patch adds a generic driver for Bluetooth SDIO devices. It supports Type-A and Type-B devices. Signed-off-by: David Vrabel <david.vrabel@csr.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Eliminate checks for impossible conditions in IRQ handlerJeff Garzik
Our info structure and info->hdev is always passed to the IRQ handler, so we don't have to worry about these checks in every interrupt. Leave a BUG_ON() just to help unwary programmers, but these could probably be removed as well. Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Add UART driver for Texas Instruments' BRF63xx chipsOhad Ben-Cohen
Add support for Texas Instruments' HCI Low Level (HCILL) Bluetooth protocol, which is a power management extension to H4. The HCILL is widely used by TI's BRF63xx Bluetooth chips. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Change BPA 100/105 driver to use USB anchorsMarcel Holtmann
With the new support for USB anchors the driver can become more simpler and also cleaner. This patch switches to the usage of USB anchors for all URBs. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-10-22[Bluetooth] Switch from OGF+OCF to using only opcodesMarcel Holtmann
The Bluetooth HCI commands are divided into logical OGF groups for easier identification of their purposes. While this still makes sense for the written specification, its makes the code only more complex and harder to read. So instead of using separate OGF and OCF values to identify the commands, use a common 16-bit opcode that combines both values. As a side effect this also reduces the complexity of OGF and OCF calculations during command header parsing. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-09-09[Bluetooth] Add missing stat.byte_rx counter modificationMarcel Holtmann
With the support for hci_recv_fragment() the call to increase the stat.byte_rx counter got accidentally removed. This patch fixes it. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-07-11[Bluetooth] Remove the redundant non-seekable llseek methodRobert P. J. Day
Remove the llseek method given that the open method already calls nonseekable_open(). Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-07-11[Bluetooth] Use hci_recv_fragment() within HCI USB driverMarcel Holtmann
This patch modifies the HCI USB driver to use the new helper function for reassembling HCI data packets and events. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-24[Bluetooth] Always send HCI_Reset for Broadcom devicesMarcel Holtmann
In case of Broadcom based Bluetooth devices, it is safe to always send HCI_Reset as first command. This gives the advantage that all HID Proxy versions will automatically work and don't need any additional quirks anymore. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-10[Bluetooth] Fix unintentional fall-through in HCI line disciplineMarcel Holtmann
A trivial fix to (what looks like) an unintentional fall-through in the HCI line discipline. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-10[Bluetooth] Fix NULL pointer dereference in HCI line disciplineMarcel Holtmann
Normally a serial Bluetooth device is opened, TIOSETD'ed to N_HCI line discipline, HCIUARTSETPROTO'ed and finally closed. In case the device fails to HCIUARTSETPROTO, closing it produces a NULL pointer dereference. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-10[Bluetooth] Add HCIUARTGETDEVICE support for HCI line disciplineMarcel Holtmann
Adding HCIUARTGETDEVICE makes it possible to get the HCI device number that is attached to a given serial device. This is required during the initialization process of some Bluetooth chips. Signed-off-by: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-05[Bluetooth] Correct SCO buffer for another Broadcom based dongleMarcel Holtmann
The SCO buffer size values for Bluetooth chips from Broadcom are wrong and the USB Bluetooth driver has to set a quirk to correct these SCO buffer size values. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-05-05[Bluetooth] Add support for Targus ACB10US USB dongleMarcel Holtmann
This patch adds the vendor and product id of the Targus ACB10US dongle and sets a flag to send HCI_Reset as the first command. Signed-off-by: Marcel Holtmann <marcel@holtmann.org
2007-04-25[SK_BUFF]: Introduce skb_copy_from_linear_data{_offset}Arnaldo Carvalho de Melo
To clearly state the intent of copying from linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-04-25[BLUETOOTH]: Introduce skb->data accessor methods for hci_{acl,event,sco}_hdrArnaldo Carvalho de Melo
For consistency with other skb data accessors, reducing the number of direct accesses to skb->data. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2007-02-26[Bluetooth] Make use of MODULE_FIRMWAREMarcel Holtmann
Some Bluetooth drivers need one or more binary firmware images. Export these image names via the MODULE_FIRMWARE tag. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] mark struct file_operations const 3Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>