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2013-02-28ARM: mvebu: Update defconfig to select SPI supportEzequiel Garcia1-0/+2
Cc: Thomas Petazzoni <[email protected]> Cc: Lior Amsalem <[email protected]> Acked-by: Gregory Clement <[email protected]> Signed-off-by: Ezequiel Garcia <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: support for the new Armada XP development board(DB-MV784MP-GP)Gregory CLEMENT2-0/+102
This is the new Armada XP evaluation board from Marvell. It comes with a RS232 port over USB, a SATA link, an internal SSD, 4 Ethernet Gigabit links. Support for USB (Host and device), SDIO, PCIe will be added as drivers when they become available for Armada XP in mainline. Tested-by: Simon Guinot <[email protected]> Tested-by: Florian Fainelli <[email protected]> Signed-off-by: Gregory CLEMENT <[email protected]> Tested-by: Ezequiel Garcia <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: update defconfig with local timer supportGregory CLEMENT1-1/+0
Now that we have support for local timers, enable it by default Signed-off-by: Gregory CLEMENT <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28clocksource: time-armada-370-xp: add local timer supportGregory CLEMENT1-38/+112
On the SOCs Armada 370 and Armada XP, each CPU comes with two private timers. This patch use the timer 0 of each CPU as local timer for the clockevent if CONFIG_LOCAL_TIMER is selected. In the other case, use only the private Timer 0 of CPU 0. Signed-off-by: Gregory CLEMENT <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: Add support for local interruptGregory CLEMENT1-4/+11
MPIC allows the use of private interrupt for each CPUs. The 28th first interrupts are per-cpu. This patch adds support to use them. Signed-off-by: Gregory CLEMENT <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: Update defconfig to select USB supportEzequiel Garcia1-1/+4
Cc: Lior Amsalem <[email protected]> Cc: Thomas Petazzoni <[email protected]> Cc: Gregory CLEMENT <[email protected]> Tested-by: Nobuhiro Iwamatsu <[email protected]> Tested-by: Florian Fainelli <[email protected]> Signed-off-by: Ezequiel Garcia <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28ARM: kirkwood: convert Guruplug Server Plus to use the device treeWilly Tarreau7-0/+151
Add a device tree entry for the Guruplug Server Plus board. This port was based both on the work done on the dreamplug and the dockstar. It builds, boots and works on my Guruplug Server Plus. Signed-off-by: Willy Tarreau <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: add DTS file for Marvell RD-A370-A1 boardFlorian Fainelli2-0/+62
This patch adds the DTS file to support the Marvell RD-A370-A1 (Reference Design board) also known as RD-88F6710 board. It is almost entirely similar to the DB-A370 board except that the first Ethernet PHY is SGMII-wired and the second is a switch which is RGMII-wired. Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: Improve the SMP support of the interrupt controllerGregory CLEMENT2-1/+73
This patch makes the interrupt controller driver more SMP aware for the Armada XP SoCs. It adds the support for the per-CPU irq. It also adds the implementation for the set_affinity hook. Patch initialy wrote by Yehuda Yitschak and reworked by Gregory CLEMENT. Signed-off-by: Yehuda Yitschak <[email protected]> Signed-off-by: Gregory CLEMENT <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28ARM: Dove: split legacy and DT setupArnd Bergmann4-86/+110
In the beginning of DT for Dove it was reasonable to have it close to non-DT code. With improved DT support, it became more and more difficult to not break non-DT while changing DT code. This patch splits up DT board setup and introduces a DOVE_LEGACY config to allow to remove legacy code for DT-only kernels. Signed-off-by: Sebastian Hesselbarth <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28ARM: dove: update dove_defconfig with a few useful optionsOlof Johansson1-20/+8
This refreshes the dove_defconfig, and adds: PRINTK_TIME DEVTMPFS EXT4 They're quite useful, and allows booting a cubox ubuntu rootfs on SD card, since that by default uses ext4. The rest of the churn is due to options and defaults moving around, no functional difference. Signed-off-by: Olof Johansson <[email protected]> Cc: Sebastian Hesselbarth <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28ARM: Kirkwood: Remove redundent SDIO clock aliasAndrew Lunn1-5/+0
Now that SDIO is instantiated via DT, and the SDIO DT node has a clocks property, we no longer need a C coded clock alias. Remove it. Signed-off-by: Andrew Lunn <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28ARM: Kirkwood: Remove redundent USB clock aliasAndrew Lunn1-4/+0
Now that USB is instantiated via DT, and the USB DT node has a clocks property, we no longer need a C coded clock alias. Remove it. Signed-off-by: Andrew Lunn <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: add LEDs support to defconfig fileThomas Petazzoni1-0/+5
The OpenBlocks AX3-4 platform has several LEDs, so it sounds wise to enable LED support in mvebu_defconfig. We anticipate that more platforms using Marvell EBU SoCs will have LEDs in the future. Signed-off-by: Thomas Petazzoni <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: enable btmrvl driver in mvebu_defconfigThomas Petazzoni1-0/+3
The Globalscale Mirabox platform, based on the Armada 370 from Marvell, has a SD8787 Wireless/Bluetooth chip connected on the SDIO interface. Now that the mvsdio has a Device Tree binding, and the necessary Device Tree informations have been added at the SoC and board level, let's enable the btmrvl driver for the Bluetooth part of the SD8787 chip. For now, the driver gets probed correctly, detects the device but apparently fails to push the firmware to the device: Bluetooth: vendor=0x2df, device=0x911a, class=255, fn=2 Bluetooth: FW failed to be active in time! Bluetooth: Downloading firmware failed! Bluetooth: vendor=0x2df, device=0x911b, class=255, fn=3 Bluetooth: FW failed to be active in time! Bluetooth: Downloading firmware failed! This will have to be investigated separately. Signed-off-by: Thomas Petazzoni <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: enable mwifiex driver in mvebu_defconfigThomas Petazzoni1-0/+3
The Globalscale Mirabox platform, based on the Armada 370 from Marvell, has a SD8787 Wireless chip connected on the SDIO interface. Now that the mvsdio has a Device Tree binding, and the necessary Device Tree informations have been added at the SoC and board level, let's enable the mwifiex driver for the Wireless part of the SD8787 chip. For now, the driver gets probed correctly, detects a device and shows the network interfaces. However, scanning Wifi networks doesn't work for now, with a 'CMD_RESP: cmd 0x6 error, result=0x1' message. This will have to be investigated separately. Signed-off-by: Thomas Petazzoni <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: enable SDIO support in mvebu_defconfigThomas Petazzoni1-0/+2
Now that the mvsdio driver has gained Device Tree support and the necessary Device Tree informations has been added for Armada 370 and Armada XP platforms, we enable the MMC subsystem and the mvsdio driver in mvebu_defconfig. Signed-off-by: Thomas Petazzoni <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28arm: mvebu: Update defconfig with Marvell RTC supportGregory CLEMENT1-0/+1
The RTC class driver is already part of the mvebu_defconfig but the Marvell internal RTC not yet. Now that its support is added for mvebu let's update the config file. Signed-off-by: Gregory CLEMENT <[email protected]> Tested-by: Florian Fainelli <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Jason Cooper <[email protected]>
2013-02-28Merge branch 'timer/cleanup' into late/mvebu2Arnd Bergmann531-1510/+939
Basing the mvebu patches on top of the timer cleanup avoids some nasty merges. Signed-off-by: Arnd Bergmann <[email protected]>
2013-02-28Merge 'mmc/upstream' into late/mvebu2Arnd Bergmann250-1180/+2095
These patches from the mmc tree were merged into v3.9 already and the later mvebu patches depend on them. Signed-off-by: Arnd Bergmann <[email protected]>
2013-02-28SUNRPC: make AF_LOCAL connect synchronousJ. Bruce Fields1-8/+27
It doesn't appear that anyone actually needs to connect asynchronously. Also, using a workqueue for the connect means we lose the namespace information from the original process. This is a problem since there's no way to explicitly pass in a filesystem namespace for resolution of an AF_LOCAL address. Acked-by: Trond Myklebust <[email protected]> Signed-off-by: J. Bruce Fields <[email protected]>
2013-02-27Merge branch 'akpm' (final batch from Andrew)Linus Torvalds429-3493/+5226
Merge third patch-bumb from Andrew Morton: "This wraps me up for -rc1. - Lots of misc stuff and things which were deferred/missed from patchbombings 1 & 2. - ocfs2 things - lib/scatterlist - hfsplus - fatfs - documentation - signals - procfs - lockdep - coredump - seqfile core - kexec - Tejun's large IDR tree reworkings - ipmi - partitions - nbd - random() things - kfifo - tools/testing/selftests updates - Sasha's large and pointless hlist cleanup" * emailed patches from Andrew Morton <[email protected]>: (163 commits) hlist: drop the node parameter from iterators kcmp: make it depend on CHECKPOINT_RESTORE selftests: add a simple doc tools/testing/selftests/Makefile: rearrange targets selftests/efivarfs: add create-read test selftests/efivarfs: add empty file creation test selftests: add tests for efivarfs kfifo: fix kfifo_alloc() and kfifo_init() kfifo: move kfifo.c from kernel/ to lib/ arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS w1: add support for DS2413 Dual Channel Addressable Switch memstick: move the dereference below the NULL test drivers/pps/clients/pps-gpio.c: use devm_kzalloc Documentation/DMA-API-HOWTO.txt: fix typo include/linux/eventfd.h: fix incorrect filename is a comment mtd: mtd_stresstest: use prandom_bytes() mtd: mtd_subpagetest: convert to use prandom library mtd: mtd_speedtest: use prandom_bytes mtd: mtd_pagetest: convert to use prandom library mtd: mtd_oobtest: convert to use prandom library ...
2013-02-27hlist: drop the node parameter from iteratorsSasha Levin218-1494/+987
I'm not sure why, but the hlist for each entry iterators were conceived list_for_each_entry(pos, head, member) The hlist ones were greedy and wanted an extra parameter: hlist_for_each_entry(tpos, pos, head, member) Why did they need an extra pos parameter? I'm not quite sure. Not only they don't really need it, it also prevents the iterator from looking exactly like the list iterator, which is unfortunate. Besides the semantic patch, there was some manual work required: - Fix up the actual hlist iterators in linux/list.h - Fix up the declaration of other iterators based on the hlist ones. - A very small amount of places were using the 'node' parameter, this was modified to use 'obj->member' instead. - Coccinelle didn't handle the hlist_for_each_entry_safe iterator properly, so those had to be fixed up manually. The semantic patch which is mostly the work of Peter Senna Tschudin is here: @@ iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host; type T; expression a,c,d,e; identifier b; statement S; @@ -T b; <+... when != b ( hlist_for_each_entry(a, - b, c, d) S | hlist_for_each_entry_continue(a, - b, c) S | hlist_for_each_entry_from(a, - b, c) S | hlist_for_each_entry_rcu(a, - b, c, d) S | hlist_for_each_entry_rcu_bh(a, - b, c, d) S | hlist_for_each_entry_continue_rcu_bh(a, - b, c) S | for_each_busy_worker(a, c, - b, d) S | ax25_uid_for_each(a, - b, c) S | ax25_for_each(a, - b, c) S | inet_bind_bucket_for_each(a, - b, c) S | sctp_for_each_hentry(a, - b, c) S | sk_for_each(a, - b, c) S | sk_for_each_rcu(a, - b, c) S | sk_for_each_from -(a, b) +(a) S + sk_for_each_from(a) S | sk_for_each_safe(a, - b, c, d) S | sk_for_each_bound(a, - b, c) S | hlist_for_each_entry_safe(a, - b, c, d, e) S | hlist_for_each_entry_continue_rcu(a, - b, c) S | nr_neigh_for_each(a, - b, c) S | nr_neigh_for_each_safe(a, - b, c, d) S | nr_node_for_each(a, - b, c) S | nr_node_for_each_safe(a, - b, c, d) S | - for_each_gfn_sp(a, c, d, b) S + for_each_gfn_sp(a, c, d) S | - for_each_gfn_indirect_valid_sp(a, c, d, b) S + for_each_gfn_indirect_valid_sp(a, c, d) S | for_each_host(a, - b, c) S | for_each_host_safe(a, - b, c, d) S | for_each_mesh_entry(a, - b, c, d) S ) ...+> [[email protected]: drop bogus change from net/ipv4/raw.c] [[email protected]: drop bogus hunk from net/ipv6/raw.c] [[email protected]: checkpatch fixes] [[email protected]: fix warnings] [[email protected]: redo intrusive kvm changes] Tested-by: Peter Senna Tschudin <[email protected]> Acked-by: Paul E. McKenney <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Cc: Wu Fengguang <[email protected]> Cc: Marcelo Tosatti <[email protected]> Cc: Gleb Natapov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27kcmp: make it depend on CHECKPOINT_RESTORECyrill Gorcunov1-3/+1
Since kcmp syscall has been implemented (initially on x86 architecture) a number of other archs wire it up as well: xtensa, sparc, sh, s390, mips, microblaze, m68k (not taking into account those who uses <asm-generic/unistd.h> for syscall numbers definitions). But the Makefile, which turns kcmp.o generation on still depends on former config-x86. Thus get rid of this limitation and make kcmp.o depend on CHECKPOINT_RESTORE option. Signed-off-by: Cyrill Gorcunov <[email protected]> Cc: Pavel Emelyanov <[email protected]> Cc: Andrey Vagin <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27selftests: add a simple docJeremy Kerr1-0/+42
This change adds a little documentation to the tests under tools/testing/selftests/, based on akpm's explanation. [[email protected]: move from Documentation to tools/testing/selftests/README.txt] Signed-off-by: Jeremy Kerr <[email protected]> Cc: Dave Young <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27tools/testing/selftests/Makefile: rearrange targetsAndrew Morton1-1/+7
Do it one-per-line to reduce patch conflict pain. Cc: Dave Young <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27selftests/efivarfs: add create-read testJeremy Kerr3-1/+46
Test that reads from a newly-created efivarfs file (with no data written) will return EOF. Signed-off-by: Jeremy Kerr <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Lingzhu Xiang <[email protected]> Cc: Dave Young <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27selftests/efivarfs: add empty file creation testJeremy Kerr1-0/+13
Signed-off-by: Jeremy Kerr <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Lingzhu Xiang <[email protected]> Cc: Dave Young <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27selftests: add tests for efivarfsJeremy Kerr4-1/+195
This change adds a few initial efivarfs tests to the tools/testing/selftests directory. The open-unlink test is based on code from Lingzhu Xiang. Signed-off-by: Jeremy Kerr <[email protected]> Cc: Matt Fleming <[email protected]> Cc: Lingzhu Xiang <[email protected]> Cc: Dave Young <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27kfifo: fix kfifo_alloc() and kfifo_init()Stefani Seibold1-4/+2
Fix kfifo_alloc() and kfifo_init() to alloc at least the requested number of elements. Since the kfifo operates on power of 2 the request size will be rounded up to the next power of two. Signed-off-by: Stefani Seibold <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27kfifo: move kfifo.c from kernel/ to lib/Stefani Seibold3-2/+2
Move kfifo.c from kernel/ to lib/ Signed-off-by: Stefani Seibold <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUSStephen Rothwell26-10/+30
Change it to CONFIG_HAVE_VIRT_TO_BUS and set it in all architecures that already provide virt_to_bus(). Signed-off-by: Stephen Rothwell <[email protected]> Reviewed-by: James Hogan <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: H Hartley Sweeten <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Paul Mundt <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: James Bottomley <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27w1: add support for DS2413 Dual Channel Addressable SwitchMariusz Bialonczyk4-5/+189
Also fixes some whitespace inconsistency in Kconfig and w1_family.h when DS2408 chip support was added. Signed-off-by: Mariusz Bialonczyk <[email protected]> Acked-by: Evgeniy Polyakov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27memstick: move the dereference below the NULL testWei Yongjun1-1/+2
The dereference should be moved below the NULL test. spatch with a semantic match is used to found this. (http://coccinelle.lip6.fr/) Signed-off-by: Wei Yongjun <[email protected]> Cc: Maxim Levitsky <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27drivers/pps/clients/pps-gpio.c: use devm_kzallocJulia Lawall1-4/+2
devm_kzalloc allocates memory that is released when a driver detaches. This patch uses devm_kzalloc for data that is allocated in the probe function of a platform device and is only freed in the remove function. Signed-off-by: Julia Lawall <[email protected]> Cc: Rodolfo Giometti <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27Documentation/DMA-API-HOWTO.txt: fix typoAndrew Morton1-1/+1
Noted by Jesper Cc: Jesper Juhl <[email protected]> Cc: Konrad Rzeszutek Wilk <[email protected]> Cc: Shuah Khan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27include/linux/eventfd.h: fix incorrect filename is a commentMartin Sustrik1-1/+1
Comment in eventfd.h referred to 'include/asm-generic/fcntl.h' while the correct path is 'include/uapi/asm-generic/fcntl.h'. Signed-off-by: Martin Sustrik <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_stresstest: use prandom_bytes()Akinobu Mita1-2/+1
Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_subpagetest: convert to use prandom libraryAkinobu Mita1-30/+12
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_speedtest: use prandom_bytesAkinobu Mita1-8/+1
Use prandom_bytes instead of equivalent local function. Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_pagetest: convert to use prandom libraryAkinobu Mita1-30/+13
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_oobtest: convert to use prandom libraryAkinobu Mita1-33/+16
This removes home-brewed pseudo-random number generator and use prandom library. Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27mtd: mtd_nandecctest: use prandom_bytes instead of get_random_bytes()Akinobu Mita1-1/+1
Using prandom_bytes() is enough. Because this data is only used for testing, not used for cryptographic use. Signed-off-by: Akinobu Mita <[email protected]> Cc: Artem Bityutskiy <[email protected]> Cc: David Woodhouse <[email protected]> Cc: "Theodore Ts'o" <[email protected]> Cc: Adrian Hunter <[email protected]> Cc: David Laight <[email protected]> Cc: Eilon Greenstein <[email protected]> Cc: Michel Lespinasse <[email protected]> Cc: Robert Love <[email protected]> Cc: Valdis Kletnieks <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27kernel/utsname.c: fix wrong comment about clone_uts_ns()Yuanhan Liu1-1/+1
Fix the wrong comment about the return value of clone_uts_ns() Signed-off-by: Yuanhan Liu <[email protected]> Acked-by: Serge Hallyn <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27nbd: fix sparse warningAlex Elder1-0/+1
I just fixed this in "drivers/block/rbd.c" and I noticed that "drivers/block/nbd.c" has the same problem. Fix a warning issued by sparse by adding some lockdep annotations to indicate the queue lock gets dropped (because it's held when do_nbd_request() is called) and re-acquired within the function. Signed-off-by: Alex Elder <[email protected]> Cc: Paul Clements <[email protected]> Cc: Paul Clements <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27nbd: update documentation and link to mailinglistWouter Verhelst2-34/+5
Documentation/blockdev/nbd.txt contained some documentation which was horribly outdated and probably still dates from the original patch that added NBD support to the kernel. This patch removes the useless and outdated bits. The tools on nbd.sf.net are fully documented in manpages, which is where documentation for the non-kernel bits should live. Additionally, add a reference to the MAINTAINERS file for the nbd-general mailinglist that is used for discussion of the userland tools and the kernel module already. Signed-off-by: Wouter Verhelst <[email protected]> Cc: Paul Clements <[email protected]> Cc: Paolo Bonzini <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27nbd: show read-only state in sysfsPaolo Bonzini1-0/+3
Pass the read-only flag to set_device_ro, so that it will be visible to the block layer and in sysfs. Signed-off-by: Paolo Bonzini <[email protected]> Cc: Paul Clements <[email protected]> Cc: Alex Bligh <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27nbd: fsync and kill block device on shutdownPaolo Bonzini1-0/+10
There are two problems with shutdown in the NBD driver. 1: Receiving the NBD_DISCONNECT ioctl does not sync the filesystem. This patch adds the sync operation into __nbd_ioctl()'s NBD_DISCONNECT handler. This is useful because BLKFLSBUF is restricted to processes that have CAP_SYS_ADMIN, and the NBD client may not possess it (fsync of the block device does not sync the filesystem, either). 2: Once we clear the socket we have no guarantee that later reads will come from the same backing storage. The patch adds calls to kill_bdev() in __nbd_ioctl()'s socket clearing code so the page cache is cleaned, lest reads that hit on the page cache will return stale data from the previously-accessible disk. Example: # qemu-nbd -r -c/dev/nbd0 /dev/sr0 # file -s /dev/nbd0 /dev/stdin: # UDF filesystem data (version 1.5) etc. # qemu-nbd -d /dev/nbd0 # qemu-nbd -r -c/dev/nbd0 /dev/sda # file -s /dev/nbd0 /dev/stdin: # UDF filesystem data (version 1.5) etc. While /dev/sda has: # file -s /dev/sda /dev/sda: x86 boot sector; etc. Signed-off-by: Paolo Bonzini <[email protected]> Acked-by: Paul Clements <[email protected]> Cc: Alex Bligh <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27nbd: support FLUSH requestsAlex Bligh2-3/+22
Currently, the NBD device does not accept flush requests from the Linux block layer. If the NBD server opened the target with neither O_SYNC nor O_DSYNC, however, the device will be effectively backed by a writeback cache. Without issuing flushes properly, operation of the NBD device will not be safe against power losses. The NBD protocol has support for both a cache flush command and a FUA command flag; the server will also pass a flag to note its support for these features. This patch adds support for the cache flush command and flag. In the kernel, we receive the flags via the NBD_SET_FLAGS ioctl, and map NBD_FLAG_SEND_FLUSH to the argument of blk_queue_flush. When the flag is active the block layer will send REQ_FLUSH requests, which we translate to NBD_CMD_FLUSH commands. FUA support is not included in this patch because all free software servers implement it with a full fdatasync; thus it has no advantage over supporting flush only. Because I [Paolo] cannot really benchmark it in a realistic scenario, I cannot tell if it is a good idea or not. It is also not clear if it is valid for an NBD server to support FUA but not flush. The Linux block layer gives a warning for this combination, the NBD protocol documentation says nothing about it. The patch also fixes a small problem in the handling of flags: nbd->flags must be cleared at the end of NBD_DO_IT, but the driver was not doing that. The bug manifests itself as follows. Suppose you two different client/server pairs to start the NBD device. Suppose also that the first client supports NBD_SET_FLAGS, and the first server sends NBD_FLAG_SEND_FLUSH; the second pair instead does neither of these two things. Before this patch, the second invocation of NBD_DO_IT will use a stale value of nbd->flags, and the second server will issue an error every time it receives an NBD_CMD_FLUSH command. This bug is pre-existing, but it becomes much more important after this patch; flush failures make the device pretty much unusable, unlike Signed-off-by: Paolo Bonzini <[email protected]> Signed-off-by: Alex Bligh <[email protected]> Acked-by: Paul Clements <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2013-02-27kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code blockYuanhan Liu1-1/+2
Put get/get_uts() into CONFIG_PROC_SYSCTL code block as they are used only when CONFIG_PROC_SYSCTL is enabled. Signed-off-by: Yuanhan Liu <[email protected]> Cc: "Eric W. Biederman" <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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