- 10 1月, 2012 25 次提交
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由 Robert Jarzmik 提交于
Add documentation for MSystems disk-on-chip docg3 chips sysfs entries, which enable and disable protection areas, giving or disabling access to the chip's memory. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Dan Carpenter 提交于
If doc_probe_device() returned an ERR_PTR, then we accidentally saved that to docg3_floors[floor] = mtd; which gets derefenced in the error handling when we call doc_release_device(). I've reworked the error handling to take care of that and hopefully make it a little simpler. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Acked-by: NRobert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Lars-Peter Clausen 提交于
In ancient times it was necessary to manually initialize the bus field of an spi_driver to spi_bus_type. These days this is done in spi_driver_register(), so we can drop the manual assignment. The patch was generated using the following coccinelle semantic patch: // <smpl> @@ identifier _driver; @@ struct spi_driver _driver = { .driver = { - .bus = &spi_bus_type, }, }; // </smpl> Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
As each docg3 chip has 2 protection areas (DPS0 and DPS1), and because theses areas can prevent user access to the chip data, add for each floor the sysfs entries which insert the protection key into the right DPS. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Docg3 chips can work in 3 modes : normal MLC mode, fast mode and reliable mode. Normally, as docg3 is a MLC chip, it should be configured to work in normal mode. In both normal mode, each page is distinct. This means that writing to page 12 of blocks 14,15 writes only to that page, and reading from page 12 of blocks 14,15 reads only from that page. In reliable and fast modes, pages are coupled by pairs, and are clones one of each other. This means that the available capacity of the chip is halved. Pages are coupled in each block, and page of index 2*n contains the same data as page 2*n+1 of the same block. In fast mode, the reads occur a bit faster, but are a bit less reliable that in normal mode. When reading from page 2*n, the chip reads bytes from both page 2*n and page 2*n+1, makes a logical and for each byte, and returns the result. As programming a page means "clearing bits", even if a bit was not cleared on one page because the flash is worn out, the other page has the bit cleared, and the result of the "AND" gives a correct result. When writing to page 2*n, the chip writes data to both page 2*n and page 2*n+1. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add functions to powerdown and powerup from suspend, in order to save power. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Credit for discovering the BCH algorith parameters, and bit reversing algorithm is to be give to Mike Dunn and Ivan Djelic. The BCH correction code relied upon the BCH library, where all data and ECC is bit-reversed. The BCH library works correctly when each input byte is bit-reversed, and accordingly ECC output is also bit-reversed. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Map the developped write and erase functions into the mtd structure. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add erase capability to the docg3 driver. The erase block is made of 2 physical blocks, as both share all 64 pages. That makes an erase block of at least 64 kBytes. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add write capability to the docg3 driver. The writes are possible on a single page (512 bytes + 16 bytes), even if that page is split on 2 physical pages on 2 blocks (each on one plane). Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add OOB buffer area to store the OOB data until the actual page is written, so that it can be completed by hardware ECC generator. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add the required registers and commands to erase and write flash pages / blocks. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add OOB layout description for docg3, so that userspace can use this information to setup the data for write_oob(). Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Add support for multiple floors, ie. cascaded docg3 chips. There might be 4 docg3 chips cascaded, sharing the same address space, and providing up to 4 times the storage capacity of a unique chip. Each floor will be seen as an independant mtd device. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Fix the docg3 reads to be able to cope with all possible data buffer / oob buffer / file mode combinations from docg3_read_oob(). This especially ensures that raw reads do not use ECC corrections, and AUTOOOB and PLACEOOB do use ECC correction. The approach is to empty docg3_read() and make it a wrapper to docg3_read_oob(). As docg3_read_oob() handles all the funny cases (no data buffer but oob buffer, data buffer but no oob buffer, ...), docg3_read() is just a special use of docg3_read_oob(). Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
BCH registers are contiguous, not on every byte. Fix the register definitions. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
The protection areas boundaries were on 16bit registers, not 8bit. This is consistent with block numbers, which can extend up to 4096 on bigger chips (and is 2048 on the docg3). Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Writeb was incorrectly traced as a 16 bits write, instead of a 8 bits write. Fix it by tracing the correct width. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Robert Jarzmik 提交于
Change the NOP debug log verbosity to very verbose to unburden log analysis. Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr> Reviewed-by: NIvan Djelic <ivan.djelic@parrot.com> Reviewed-by: NMike Dunn <mikedunn@newsguy.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Shubhrajyoti D 提交于
Making MTD_NAND_OMAP2 depend on ARCH_OMAP2PLUS instead of oring with ARCH2/3/4. Reported-by: NRussell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NShubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Aaron Sierra 提交于
This patch allows each CFI device map to use its own endianness. The globally defined CFI endianness (CONFIG_MTD_CFI_NOSWAP, CONFIG_MTD_CFI_BE_BYTE_SWAP or CONFIG_MTD_CFI_LE_BYTE_SWAP) becomes the default value which can be overridden by a driver for a particular device. Signed-off-by: NAaron Sierra <asierra@xes-inc.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Brian Norris 提交于
Some error paths in mtd_blkdevs were fixed in the following commit: commit 94735ec4 mtd: mtd_blkdevs: fix error path in blktrans_open But on these error paths, the block device's `dev->open' count is already incremented before we check for errors. This meant that, while the error path was handled correctly on the first time through blktrans_open(), the device is erroneously considered already open on the second time through. This problem can be seen, for instance, when a UBI volume is simultaneously mounted as a UBIFS partition and read through its corresponding gluebi mtdblockX device. This results in blktrans_open() passing its error checks (with `dev->open > 0') without actually having a handle on the device. Here's a summarized log of the actions and results with nandsim: # modprobe nandsim # modprobe mtdblock # modprobe gluebi # modprobe ubifs # ubiattach /dev/ubi_ctrl -m 0 ... # ubimkvol /dev/ubi0 -N test -s 16MiB ... # mount -t ubifs ubi0:test /mnt # ls /dev/mtdblock* /dev/mtdblock0 /dev/mtdblock1 # cat /dev/mtdblock1 > /dev/null cat: can't open '/dev/mtdblock4': Device or resource busy # cat /dev/mtdblock1 > /dev/null CPU 0 Unable to handle kernel paging request at virtual address fffffff0, epc == 8031536c, ra == 8031f280 Oops[#1]: ... Call Trace: [<8031536c>] ubi_leb_read+0x14/0x164 [<8031f280>] gluebi_read+0xf0/0x148 [<802edba8>] mtdblock_readsect+0x64/0x198 [<802ecfe4>] mtd_blktrans_thread+0x330/0x3f4 [<8005be98>] kthread+0x88/0x90 [<8000bc04>] kernel_thread_helper+0x10/0x18 Cc: stable@kernel.org [3.0+] Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Brian Norris 提交于
Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Brian Norris 提交于
Macronix MX30LF1208AA is a 512 Mbit NAND with device code 0xF0. Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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由 Brian Norris 提交于
Macronix is produing SLC NAND MX30LF1208AA, so add their manufacturer code to the manufacturer lists. Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@linux.intel.com> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com>
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- 24 12月, 2011 9 次提交
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: VFS: Fix race between CPU hotplug and lglocks
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git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux由 Linus Torvalds 提交于
for linus: writeback reason binary tracing format fix * tag 'writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux: writeback: show writeback reason with __print_symbolic
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild由 Linus Torvalds 提交于
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kconfig: adapt update-po-config to new UML layout
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media由 Linus Torvalds 提交于
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: [media] omap3isp: Fix crash caused by subdevs now having a pointer to devnodes
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: Btrfs: call d_instantiate after all ops are setup Btrfs: fix worker lock misuse in find_worker
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Fix MSIQ HV call ordering in pci_sun4v_msiq_build_irq().
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: netfilter: xt_connbytes: handle negation correctly net: relax rcvbuf limits rps: fix insufficient bounds checking in store_rps_dev_flow_table_cnt() net: introduce DST_NOPEER dst flag mqprio: Avoid panic if no options are provided bridge: provide a mtu() method for fake_dst_ops
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- 23 12月, 2011 6 次提交
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由 Florian Westphal 提交于
"! --connbytes 23:42" should match if the packet/byte count is not in range. As there is no explict "invert match" toggle in the match structure, userspace swaps the from and to arguments (i.e., as if "--connbytes 42:23" were given). However, "what <= 23 && what >= 42" will always be false. Change things so we use "||" in case "from" is larger than "to". This change may look like it breaks backwards compatibility when "to" is 0. However, older iptables binaries will refuse "connbytes 42:0", and current releases treat it to mean "! --connbytes 0:42", so we should be fine. Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
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由 Al Viro 提交于
This closes races where btrfs is calling d_instantiate too soon during inode creation. All of the callers of btrfs_add_nondir are updated to instantiate after the inode is fully setup in memory. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NChris Mason <chris.mason@oracle.com>
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由 Chris Mason 提交于
Dan Carpenter noticed that we were doing a double unlock on the worker lock, and sometimes picking a worker thread without the lock held. This fixes both errors. Signed-off-by: NChris Mason <chris.mason@oracle.com> Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
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由 Eric Dumazet 提交于
skb->truesize might be big even for a small packet. Its even bigger after commit 87fb4b7b (net: more accurate skb truesize) and big MTU. We should allow queueing at least one packet per receiver, even with a low RCVBUF setting. Reported-by: NMichal Simek <monstr@monstr.eu> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Xi Wang 提交于
Setting a large rps_flow_cnt like (1 << 30) on 32-bit platform will cause a kernel oops due to insufficient bounds checking. if (count > 1<<30) { /* Enforce a limit to prevent overflow */ return -EINVAL; } count = roundup_pow_of_two(count); table = vmalloc(RPS_DEV_FLOW_TABLE_SIZE(count)); Note that the macro RPS_DEV_FLOW_TABLE_SIZE(count) is defined as: ... + (count * sizeof(struct rps_dev_flow)) where sizeof(struct rps_dev_flow) is 8. (1 << 30) * 8 will overflow 32 bits. This patch replaces the magic number (1 << 30) with a symbolic bound. Suggested-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NXi Wang <xi.wang@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Eric Dumazet 提交于
Chris Boot reported crashes occurring in ipv6_select_ident(). [ 461.457562] RIP: 0010:[<ffffffff812dde61>] [<ffffffff812dde61>] ipv6_select_ident+0x31/0xa7 [ 461.578229] Call Trace: [ 461.580742] <IRQ> [ 461.582870] [<ffffffff812efa7f>] ? udp6_ufo_fragment+0x124/0x1a2 [ 461.589054] [<ffffffff812dbfe0>] ? ipv6_gso_segment+0xc0/0x155 [ 461.595140] [<ffffffff812700c6>] ? skb_gso_segment+0x208/0x28b [ 461.601198] [<ffffffffa03f236b>] ? ipv6_confirm+0x146/0x15e [nf_conntrack_ipv6] [ 461.608786] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.614227] [<ffffffff81271d64>] ? dev_hard_start_xmit+0x357/0x543 [ 461.620659] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.626440] [<ffffffffa0379745>] ? br_parse_ip_options+0x19a/0x19a [bridge] [ 461.633581] [<ffffffff812722ff>] ? dev_queue_xmit+0x3af/0x459 [ 461.639577] [<ffffffffa03747d2>] ? br_dev_queue_push_xmit+0x72/0x76 [bridge] [ 461.646887] [<ffffffffa03791e3>] ? br_nf_post_routing+0x17d/0x18f [bridge] [ 461.653997] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.659473] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.665485] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.671234] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.677299] [<ffffffffa0379215>] ? nf_bridge_update_protocol+0x20/0x20 [bridge] [ 461.684891] [<ffffffffa03bb0e5>] ? nf_ct_zone+0xa/0x17 [nf_conntrack] [ 461.691520] [<ffffffffa0374760>] ? br_flood+0xfa/0xfa [bridge] [ 461.697572] [<ffffffffa0374812>] ? NF_HOOK.constprop.8+0x3c/0x56 [bridge] [ 461.704616] [<ffffffffa0379031>] ? nf_bridge_push_encap_header+0x1c/0x26 [bridge] [ 461.712329] [<ffffffffa037929f>] ? br_nf_forward_finish+0x8a/0x95 [bridge] [ 461.719490] [<ffffffffa037900a>] ? nf_bridge_pull_encap_header+0x1c/0x27 [bridge] [ 461.727223] [<ffffffffa0379974>] ? br_nf_forward_ip+0x1c0/0x1d4 [bridge] [ 461.734292] [<ffffffff81291c4d>] ? nf_iterate+0x41/0x77 [ 461.739758] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.746203] [<ffffffff81291cf6>] ? nf_hook_slow+0x73/0x111 [ 461.751950] [<ffffffffa03748cc>] ? __br_deliver+0xa0/0xa0 [bridge] [ 461.758378] [<ffffffffa037533a>] ? NF_HOOK.constprop.4+0x56/0x56 [bridge] This is caused by bridge netfilter special dst_entry (fake_rtable), a special shared entry, where attaching an inetpeer makes no sense. Problem is present since commit 87c48fa3 (ipv6: make fragment identifications less predictable) Introduce DST_NOPEER dst flag and make sure ipv6_select_ident() and __ip_select_ident() fallback to the 'no peer attached' handling. Reported-by: NChris Boot <bootc@bootc.net> Tested-by: NChris Boot <bootc@bootc.net> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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