- 29 6月, 2017 1 次提交
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由 Phil Elwell 提交于
The BCM2835 MINI UART has non-standard THRE semantics. Conventionally the bit means that the FIFO is empty (although there may still be a byte in the transmit register), but on 2835 it indicates that the FIFO is not full. This causes interrupts after every byte is transmitted, with the FIFO providing some interrupt latency tolerance. A consequence of this difference is that the usual strategy of writing multiple bytes into the TX FIFO after checking THRE once is unsafe. In the worst case of 7 bytes in the FIFO, writing 8 bytes loses all but the first since by then the FIFO is full. There is an HFIFO ("Hidden FIFO") capability that causes the transmit loop to terminate when both THRE and TEMT are set, i.e. when the TX block is completely idle. This is unnecessarily cautious, potentially causing gaps in transmission. Add a new conditional to the transmit loop, predicated on CAP_MINI, that exits when THRE is no longer set (the FIFO is full). This allows the FIFO to fill quickly but subsequent writes are paced by the transmission rate. Signed-off-by: NPhil Elwell <phil@raspberrypi.org> Acked-by: NEric Anholt <eric@anholt.net> Acked-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 20 6月, 2017 7 次提交
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由 Helmut Klein 提交于
This patch handle the stable UART bindings but also keeps compatibility with the legacy non-stable bindings until all boards uses them. Reviewed-by: NJerome Brunet <jbrunet@baylibre.com> Signed-off-by: NHelmut Klein <hgkr.klein@gmail.com> Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Helmut Klein 提交于
Add the documentation for the device tree binding of Amlogic Meson Serial UART. Signed-off-by: NHelmut Klein <hgkr.klein@gmail.com> Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com> Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Matthias Brugger 提交于
Commit e4fda3a0 ("serial: don't register CIR serial ports") adds a check for PORT_8250_CIR to serial8250_register_8250_port(). But the code isn't needed as the function never takes the branch when the port is CIR serial port. This patch deletes the dead code. Signed-off-by: NMatthias Brugger <mbrugger@suse.com> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Arvind Yadav 提交于
of_device_ids are not supposed to change at runtime. All functions working with of_device_ids provided by <linux/of.h> work with const of_device_ids. So mark the non-const structs as const. Signed-off-by: NArvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Christoph Hellwig 提交于
Use dma_alloc_attrs directly instead of the dma_alloc_noncoherent wrapper. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Andreas Färber 提交于
This implements an earlycon for Actions Semi S500/S900 SoCs. Based on LeMaker linux-actions tree. Signed-off-by: NAndreas Färber <afaerber@suse.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Andreas Färber 提交于
This UART is found on S500 and S900 SoCs. Acked-by: NRob Herring <robh@kernel.org> Signed-off-by: NAndreas Färber <afaerber@suse.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 14 6月, 2017 2 次提交
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由 Alexandre Belloni 提交于
Now that AVR32 is gone, platform_data are not used to initialize the driver anymore, remove that path from the driver. Also remove the now unused struct atmel_uart_data. Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: NRichard Genoud <richard.genoud@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Alexandre Belloni 提交于
atmel_default_console_device was only used by AVR32, in particular arch/avr32/mach-at32ap/at32ap700x.c which is now gone. Remove it from the driver. Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: NRichard Genoud <richard.genoud@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 13 6月, 2017 9 次提交
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由 Johan Hovold 提交于
Drop the now unused alt_speed field from struct tty_struct. Setting an alt_speed using the ASYNC_SPD flags has been deprecated since v2.1.69, and has been broken for all tty drivers but serial-core since v3.10 and commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. Note that serial-core still supports changing speed using TIOCSSERIAL and SPD flags (including "alt-speeds"), but also warns about it being deprecated since pre-git. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Remove three ifdefed and broken implementations of TIOCSSERIAL and TIOCGICOUNT, and parity handling in set_termios which had suffered severe bit rot. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Setting an alt_speed using the ROCKET_SPD flags has been deprecated since v2.1.69, and has been broken since commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. To make things worse commit 6df3526b ("rocket: first pass at termios reporting") in v2.6.25 started reporting back the actual baud rate used, something which also required 38400 to again be set whenever changing a SPD flag. Drop the broken alt-speed handling altogether, and add a ratelimited warning about using TIOCCSERIAL to change speed as being deprecated. Note that the rocket driver has never supported using a custom divisor (ASYNC_SPD_CUST equivalent). Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Setting an alt_speed using the ASYNC_SPD flags has been deprecated since v2.1.69, and has been broken since v3.10 and commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. Drop the broken alt-speed handling altogether, and add a ratelimited warning about using TIOCCSERIAL to to change speed as being deprecated. Note that using ASYNC_SPD_CUST is still supported. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Setting an alt_speed using the ASYNC_SPD flags has been deprecated since v2.1.69, and has been broken since v3.10 and commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*") without anyone noticing. Drop the broken alt-speed handling altogether, and add a ratelimited warning about using TIOCCSERIAL to change speed as being deprecated. Note that using ASYNC_SPD_CUST is still supported. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
This driver was setting the deprecated and broken alt_speed based on port flags, but never provided a means to change the flags or to actually change the speed. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Remove the broken alt_speed code, and warn when trying to set the line speed using TIOCSSERIAL and SPD flags. The use of SPD flags to set the line speed has been deprecated since v2.1.69 and support for alt_speed (e.g. "warp") has even been removed from TTY core in v3.10 by commit 6865ff22 ("TTY: do not warn about setting speed via SPD_*"), effectively breaking all driver implementations of this except for serial core. Also remove the verbose and outdated comment on how to set baud rates. Note that setting a custom divisor will continue to work with the caveat that 38400 must again be selected every time the divisor is changed since v2.6.24 and commit 669a6db1 ("USB: ftd_sio: cleanups and updates for new termios work") which started reporting back the actual baud rate used. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Simplify TIOCSSERIAL flag logic somewhat. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Johan Hovold 提交于
Contrary to what a comment claimed, the ASYNC_SPD flags and custom divisor can be set by a non-privileged user so rate limit the deprecation notice as was intended. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 09 6月, 2017 11 次提交
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由 Aleksa Sarai 提交于
When opening the slave end of a PTY, it is not possible for userspace to safely ensure that /dev/pts/$num is actually a slave (in cases where the mount namespace in which devpts was mounted is controlled by an untrusted process). In addition, there are several unresolvable race conditions if userspace were to attempt to detect attacks through stat(2) and other similar methods [in addition it is not clear how userspace could detect attacks involving FUSE]. Resolve this by providing an interface for userpace to safely open the "peer" end of a PTY file descriptor by using the dentry cached by devpts. Since it is not possible to have an open master PTY without having its slave exposed in /dev/pts this interface is safe. This interface currently does not provide a way to get the master pty (since it is not clear whether such an interface is safe or even useful). Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Valentin Rothberg <vrothberg@suse.com> Signed-off-by: NAleksa Sarai <asarai@suse.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Aleksa Sarai 提交于
In order to avoid future diversions between fs/compat_ioctl.c and drivers/tty/pty.c, define .compat_ioctl callbacks for the relevant tty_operations structs. Since both pty_unix98_ioctl() and pty_bsd_ioctl() are compatible between 32-bit and 64-bit userspace no special translation is required. Signed-off-by: NAleksa Sarai <asarai@suse.de> Reviewed-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Jan Kiszka 提交于
Commtech adapters apparently need the original setting as outputs, see https://marc.info/?l=linux-gpio&m=149557425201323&w=2. Account for that. Fixes: 7dea8165 ("serial: exar: Preconfigure xr17v35x MPIOs as output") Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com> Reviewed-by: NAndy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Andy Shevchenko 提交于
AVR32 is gone. Now it's time to clean up the driver by removing leftovers that was used by AVR32 related code. Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: NRichard Genoud <richard.genoud@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
Only vgacon and sisusbcon did it right, the rest (via generic code) tried underline (usually cyan). Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Greg Kroah-Hartman 提交于
The vt copy_from/to_user cleanups were in a separate branch for others to work off of. Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
Done by copy_{from,to}_user(). Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
Again, a nice linear transfer that simplifies the code. Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
A nice big linear transfer, no need to flip stac/PAN/etc every half-entry. Also, yay __put_user() after checking only read. Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
Only read access is checked before this call. Actually, at the moment this is not an issue, as every in-tree arch does the same manual checks for VERIFY_READ vs VERIFY_WRITE, relying on the MMU to tell them apart, but this wasn't the case in the past and may happen again on some odd arch in the future. If anyone cares about 3.7 and earlier, this is a security hole (untested) on real 80386 CPUs. Signed-off-by: NAdam Borowski <kilobyte@angband.pl> CC: stable@vger.kernel.org # v3.7- Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Adam Borowski 提交于
Linus wants to get rid of these functions, and these uses are especially egregious: they copy a big linear array element by element. Signed-off-by: NAdam Borowski <kilobyte@angband.pl> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 05 6月, 2017 9 次提交
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由 Greg Kroah-Hartman 提交于
We want the tty locking fix in here, so that maybe we can finally get it fixed for real... Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Linus Torvalds 提交于
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由 Richard Narron 提交于
This fixes a problem with reading files larger than 2GB from a UFS-2 file system: https://bugzilla.kernel.org/show_bug.cgi?id=195721 The incorrect UFS s_maxsize limit became a problem as of commit c2a9737f ("vfs,mm: fix a dead loop in truncate_inode_pages_range()") which started using s_maxbytes to avoid a page index overflow in do_generic_file_read(). That caused files to be truncated on UFS-2 file systems because the default maximum file size is 2GB (MAX_NON_LFS) and UFS didn't update it. Here I simply increase the default to a common value used by other file systems. Signed-off-by: NRichard Narron <comet.berkeley@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Will B <will.brokenbourgh2877@gmail.com> Cc: Theodore Ts'o <tytso@mit.edu> Cc: <stable@vger.kernel.org> # v4.9 and backports of c2a9737fSigned-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.linux-nfs.org/projects/trondmy/linux-nfs由 Linus Torvalds 提交于
Pull NFS client bugfixes from Trond Myklebust: "Bugfixes include: - Fix a typo in commit e0926934 ("NFS append COMMIT after synchronous COPY") that breaks copy offload - Fix the connect error propagation in xs_tcp_setup_socket() - Fix a lock leak in nfs40_walk_client_list - Verify that pNFS requests lie within the offset range of the layout segment" * tag 'nfs-for-4.12-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: nfs: Mark unnecessarily extern functions as static SUNRPC: ensure correct error is reported by xs_tcp_setup_socket() NFSv4.0: Fix a lock leak in nfs40_walk_client_list pnfs: Fix the check for requests in range of layout segment xprtrdma: Delete an error message for a failed memory allocation in xprt_rdma_bc_setup() pNFS/flexfiles: missing error code in ff_layout_alloc_lseg() NFS fix COMMIT after COPY
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty由 Linus Torvalds 提交于
Pull tty fix from Greg KH: "Here is a single tty core fix for 4.12-rc4. It reverts a patch that a lot of people reported as causing lockdep and other warnings. Right after I reverted this in my tree, it seems like another "correct" fix might have shown up, but it's too late in the release cycle to be messing with tty core locking, so let's just revert this for now to go back how things always have been and try it again for 4.13. This has not been in linux-next as I only reverted it a few hours ago" * tag 'tty-4.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: Revert "tty: fix port buffer locking"
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input由 Linus Torvalds 提交于
Pull input subsystem fixes from Dmitry Torokhov: - a couple of regression fixes in synaptics and axp20x-pek drivers - try to ease transition from PS/2 to RMI for Synaptics touchpad users by ensuring we do not try to activate RMI mode when RMI SMBus support is not enabled, and nag users a bit to enable it - plus a couple of other changes that seemed worthwhile for this release * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: axp20x-pek - switch to acpi_dev_present and check for ACPI0011 too Input: axp20x-pek - only check for "INTCFD9" ACPI device on Cherry Trail Input: tm2-touchkey - use LEN_ON as boolean value instead of LED_FULL Input: synaptics - tell users to report when they should be using rmi-smbus Input: synaptics - warn the users when there is a better mode Input: synaptics - keep PS/2 around when RMI4_SMB is not enabled Input: synaptics - clear device info before filling in Input: silead - disable interrupt during suspend
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git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux由 Linus Torvalds 提交于
Pull RTC fixlet from Alexandre Belloni: "A single patch, not really a fix but I don't think there is any reason to delay it. Change the mailing list address" * tag 'rtc-4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: MAINTAINERS: update RTC mailing list
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi由 Linus Torvalds 提交于
Pull SCSI fixes from James Bottomley: "This is nine fixes, seven of which are for the qedi driver (new as of 4.10) the other two are a use after free in the cxgbi drivers and a potential NULL dereference in the rdac device handler" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: libcxgbi: fix skb use after free scsi: qedi: Fix endpoint NULL panic during recovery. scsi: qedi: set max_fin_rt default value scsi: qedi: Set firmware tcp msl timer value. scsi: qedi: Fix endpoint NULL panic in qedi_set_path. scsi: qedi: Set dma_boundary to 0xfff. scsi: qedi: Correctly set firmware max supported BDs. scsi: qedi: Fix bad pte call trace when iscsiuio is stopped. scsi: scsi_dh_rdac: Use ctlr directly in rdac_failover_get()
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git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma由 Linus Torvalds 提交于
Pull rdma fixes from Doug Ledford: "For the most part this is just a minor -rc cycle for the rdma subsystem. Even given that this is all of the -rc patches since the merge window closed, it's still only about 25 patches: - Multiple i40iw, nes, iw_cxgb4, hfi1, qib, mlx4, mlx5 fixes - A few upper layer protocol fixes (IPoIB, iSER, SRP) - A modest number of core fixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (26 commits) RDMA/SA: Fix kernel panic in CMA request handler flow RDMA/umem: Fix missing mmap_sem in get umem ODP call RDMA/core: not to set page dirty bit if it's already set. RDMA/uverbs: Declare local function static and add brackets to sizeof RDMA/netlink: Reduce exposure of RDMA netlink functions RDMA/srp: Fix NULL deref at srp_destroy_qp() RDMA/IPoIB: Limit the ipoib_dev_uninit_default scope RDMA/IPoIB: Replace netdev_priv with ipoib_priv for ipoib_get_link_ksettings RDMA/qedr: add null check before pointer dereference RDMA/mlx5: set UMR wqe fence according to HCA cap net/mlx5: Define interface bits for fencing UMR wqe RDMA/mlx4: Fix MAD tunneling when SRIOV is enabled RDMA/qib,hfi1: Fix MR reference count leak on write with immediate RDMA/hfi1: Defer setting VL15 credits to link-up interrupt RDMA/hfi1: change PCI bar addr assignments to Linux API functions RDMA/hfi1: fix array termination by appending NULL to attr array RDMA/iw_cxgb4: fix the calculation of ipv6 header size RDMA/iw_cxgb4: calculate t4_eq_status_entries properly RDMA/iw_cxgb4: Avoid touch after free error in ARP failure handlers RDMA/nes: ACK MPA Reply frame ...
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- 04 6月, 2017 1 次提交
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由 Greg Kroah-Hartman 提交于
This reverts commit 925bb1ce. It causes lots of warnings and problems so for now, let's just revert it. Reported-by: <valdis.kletnieks@vt.edu> Reported-by: NRussell King <linux@armlinux.org.uk> Reported-by: NSergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Reported-by: NGeert Uytterhoeven <geert@linux-m68k.org> Reported-by: NJiri Slaby <jslaby@suse.cz> Reported-by: NAndrey Konovalov <andreyknvl@google.com> Acked-by: NVegard Nossum <vegard.nossum@oracle.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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