- 18 7月, 2014 1 次提交
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由 Nobuhiro Iwamatsu 提交于
Currently, the decimal point is discarded calculation of BRR. Therefore, it can not calculate a value close to the correct value. This patch fixes this problem by using DIV_ROUND_CLOSEST. Signed-off-by: NNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 13 7月, 2014 3 次提交
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由 Thomas Gleixner 提交于
The uarts only work when the parent is ras_ahb_clk. The stale 3.5 based ST tree does this in the board file. Add it to the clk init function. Not pretty, but the mess there is amazing anyway. Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NMike Turquette <mturquette@linaro.org>
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由 Thomas Gleixner 提交于
The control register is at offset 0x10, not 0x0. This is wreckaged since commit 5df33a62 (SPEAr: Switch to common clock framework). Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NMike Turquette <mturquette@linaro.org>
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由 Rasmus Villemoes 提交于
In 2c964a2f "drivers: tty: Merge alloc_tty_struct and initialize_tty_struct", I messed up the refactorization of pty_common_install, causing use-after-free and NULL pointer derefs on various error paths. This should fix it. Reported-by: NJulia Lawall <julia.lawall@lip6.fr> Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 12 7月, 2014 12 次提交
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由 Roger Quadros 提交于
If probe fails then we need to call pm_runtime_disable() to balance out the previous pm_runtime_enable() call. Else it will cause unbalanced pm_runtime_enable() call in the succeding probe call. This anomaly was observed when the call to devm_phy_create() failed with -EPROBE_DEFER. Balance out the pm_runtime_enable() call in .remove() as well. Signed-off-by: NRoger Quadros <rogerq@ti.com> Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Roger Quadros 提交于
Prevent resources from being freed twice in case device_add() call fails within phy_create(). Also use ida_simple_remove() instead of ida_remove() as we had used ida_simple_get() to allocate the ida. Cc: 3.13+ <stable@vger.kernel.org> # 3.13+ Signed-off-by: NRoger Quadros <rogerq@ti.com> Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Sjoerd Simons 提交于
Allow phy-exynos-usb2 to be autoloaded based on devicetree information. Tested on Odroid X2 with its USB subsystem build as modules. Signed-off-by: NSjoerd Simons <sjoerd.simons@collabora.co.uk> Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Himangi Saraogi 提交于
devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure. A simplified version of the semantic match that finds this problem is as follows: // <smpl> @@ expression e,e1; statement S; @@ *e = devm_ioremap_resource(...); if (!e1) S // </smpl> Signed-off-by: NHimangi Saraogi <himangi774@gmail.com> Acked-by: NJulia Lawall <julia.lawall@lip6.fr> Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Maxime Ripard 提交于
The driver depend on the reset framework in a mandatory way. Make sure reset_control_get is defined by adding this dependency in Kconfig Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com> Reported-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NKishon Vijay Abraham I <kishon@ti.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Michal Sojka 提交于
This adds support for Infineon TriBoard TC1798 [1]. Only interface 1 is used as serial line (see [2], Figure 8-6). [1] http://www.infineon.com/cms/de/product/microcontroller/development-tools-software-and-kits/tricore-tm-development-tools-software-and-kits/starterkits-and-evaluation-boards/starter-kit-tc1798/channel.html?channel=db3a304333b8a7ca0133cfa3d73e4268 [2] http://www.infineon.com/dgdl/TriBoardManual-TC1798-V10.pdf?folderId=db3a304412b407950112b409ae7c0343&fileId=db3a304333b8a7ca0133cfae99fe426aSigned-off-by: NMichal Sojka <sojkam1@fel.cvut.cz> Cc: Johan Hovold <johan@kernel.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Rasmus Villemoes 提交于
The two functions alloc_tty_struct and initialize_tty_struct are always called together. Merge them into alloc_tty_struct, updating its prototype and the only two callers of these functions. Signed-off-by: NRasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Geert Uytterhoeven 提交于
Commit 16052827 ("dmaengine/dma_slave: introduce inline wrappers") changed the code to use the new API, but forgot to update an error message. Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be> Cc: Jiri Kosina <trivial@kernel.org> Cc: linux-serial@vger.kernel.org -- v2: - New Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Vineet Gupta 提交于
| drivers/tty/serial/arc_uart.c:516:2: warning: (near initialization for 'arc_serial_pops.poll_put_char') [enabled by default] This partially undoes "serial/arc: use uart_console_write() helper" by restoring the prototpye of poll helper and use a different one in uart_console_write() Signed-off-by: NVineet Gupta <vgupta@synopsys.com> Reported-by: Nkbuild test robot <fengguang.wu@intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Daniel Thompson 提交于
This driver does not currently use uart_console_write() and instead provides is own LF to LFCR conversion in it's console_write() method. We should use the library function instead. Cmopile tested only (with ARCH=arm). Signed-off-by: NDaniel Thompson <daniel.thompson@linaro.org> Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Jiri Slaby <jslaby@suse.cz> Cc: linux-serial@vger.kernel.org Cc: nios2-dev@lists.rocketboards.org Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Uwe Kleine-König 提交于
Olof Johansson pointed out that usually the company name is picked as namespace prefix to specific properties. So expect "energymicro,location" but fall back to the previously introduced name "efm32,location". Cc: Olof Johansson <olof@lixom.net> Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Fix breakage introduced by commit c557d392, 'serial: Test for no tx data on tx restart'. Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 11 7月, 2014 24 次提交
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由 Peter Hurley 提交于
Replace open-coded test for empty tx ring buffer with equivalent helper function, uart_circ_empty(). No functional change. Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Commit 717f3bba, 'serial_core: Fix conditional start_tx on ring buffer not empty' exposes an incorrect assumption in several drivers' start_tx methods; the tx ring buffer can, in fact, be empty when restarting tx while performing flow control. Affected drivers: sunsab.c ip22zilog.c pmac_zilog.c sunzilog.c m32r_sio.c imx.c Other in-tree serial drivers either are not affected or already test for empty tx ring buffer before transmitting. Test for empty tx ring buffer in start_tx() method, after transmitting x_char (if applicable). Reported-by: NAaro Koskinen <aaro.koskinen@iki.fi> Cc: Seth Bollinger <sethb@digi.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> # 3.15 Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stephen Boyd 提交于
To support big-endian CPUs use the string versions of the io read/write macros on the TX/RX fifos and the non-raw variants of the readl/writel macros throughout. This way we don't byteswap the characters coming from the fifos but we properly deal with the little-endian nature of the serial hardware while controlling it. Signed-off-by: NStephen Boyd <sboyd@codeaurora.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Dan Carpenter 提交于
The TXX9_SIFCR_TDIL_MASK define is cut and pasted twice so we can delete the second instance. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
blackfin uart port drivers mistakenly set the struct uart_port flags bit UPF_BUG_THRE (which only has meaning to the 8250 core) while trying to set ASYNC_CTS_FLOW. Uart port drivers can override termios settings based on actual hardware support in their .set_termios method; the serial core sets the appropriate port flags based on the overrides. Overriding only the initial termios settings is accomplished by only perform those overrides if the old termios parameter is NULL. CC: Sonic Zhang <sonic.zhang@analog.com> CC: adi-buildroot-devel@lists.sourceforge.net Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Uart port drivers may reconfigure termios settings based on available hardware support; set/clear ASYNC_CTS_FLOW and ASYNC_CHECK_CD _after_ calling the port driver's .set_termios method. Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
tty_port_close_start() already validates the port counts and issues a diagnostic if validation fails. Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Since at least before 2.6.30, it has not been possible to observe a hung up file pointer in a tty driver's open() method unless/until the driver open() releases the tty_lock() (eg., before blocking). This is because tty_open() adds the file pointer while holding the tty_lock() _and_ doesn't release the lock until after calling the tty driver's open() method. [ Before tty_lock(), this was lock_kernel(). ] Since __tty_hangup() first waits on the tty_lock() before enumerating and hanging up the open file pointers, either __tty_hangup() will wait for the tty_lock() or tty_open() will not yet have added the file pointer. For example, CPU 0 | CPU 1 | tty_open | __tty_hangup .. | .. tty_lock | .. tty_reopen | tty_lock / blocks .. | tty_add_file(tty, filp) | .. | tty->ops->open(tty, filp) | tty_port_open | tty_port_block_til_ready | .. | while (1) | .. | tty_unlock | / unblocks schedule | for each filp on tty->tty_files | f_ops = tty_hung_up_fops; | .. | tty_unlock tty_lock | .. | tty_unlock | Note that since tty_port_block_til_ready() and similar drop the tty_lock while blocking, when woken, the file pointer must then be tested for having been hung up. Also, fix bit-rotted drivers that used extra_count to track the port->count bump. CC: Mikael Starvik <starvik@axis.com> CC: Samuel Ortiz <samuel@sortiz.org> CC: "David S. Miller" <davem@davemloft.net> Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Acked-by: NJesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
Fix ASYNC_* constant usage that should be the corresponding UPF_* constant. CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: devicetree@vger.kernel.org Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
tty->closing cannot be set on ipw_open() because the ipwireless tty driver does not call any functions that set tty->closing. CC: Jiri Kosina <jkosina@suse.cz> Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Acked-by: NDavid Sterba <dsterba@suse.cz> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
tty->closing informs the line discipline that the hardware will be shutting down imminently, and to disable further input other than soft flow control (but to still allow additional output). However, the tty lock is the necessary lock for preventing concurrent changes to tty->closing. As shown by the call-tree audit [1] of functions that modify tty->closing, the tty lock is already held for those functions. [1] Call-tree audit of functions that modify tty->closing * does not include call tree to tty_port_close(), tty_port_close_start(), or tty_port_close_end() which is already documented in 'tty: Document locking for tty_port_close{,start,end}' that shows callers to those 3 functions hold the tty lock tty_release() tty->ops->close() --+ | __tty_hangup() | tty->ops->close() --+ | mp_close():drivers/staging/sb105x/sb_pci_mp.c dngc_tty_close():drivers/staging/dgnc/dgnc_tty.c dgap_tty_close():drivers/staging/dgap/dgap_tty.c dgrp_tty_close():drivers/staging/dgrp/dgrp_tty.c rp_close():drivers/tty/rocket.c hvsi_close():drivers/tty/hvc/hvsi.c rs_close():drivers/tty/serial/68328serial.c rs_close():drivers/tty/serial/crisv10.c uart_close():drivers/tty/serial/serial_core.c isdn_tty_close():drivers/isdn/i4l/isdn_tty.c tty3215_close():drivers/s390/char/con3215.c tty_open() tty_ldisc_setup() ----+ | __tty_hangup() | tty_ldisc_hangup() ---+ | tty_set_ldisc() --------+ tty_ldisc_restore() --+ | +- tty_ldisc_open() ld->ops->open() --+ | +- n_tty_open() Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
The tty lock is held when the tty driver's hangup() method is called (from the lone call-site, __tty_hangup()). The call-tree audit [1] of tty_port_hangup() is a closed graph of the callers of tty_port_hangup(); ie., all callers originate only from __tty_hangup(). Of these callers, none drop the tty lock prior to calling tty_port_hangup(). [1] Call-tree audit of tty_port_hangup() __tty_hangup() tty->ops->hangup() --+ | rs_hangup():arch/ia64/hp/sim/simserial.c line_hangup():arch/um/drivers/line.c gdm_tty_hangup():drivers/staging/gdm724x/gdm_tty.c fwtty_hangup():drivers/staging/fwserial/fwserial.c acm_tty_hangup():drivers/usb/class/cdc-acm.c serial_hangup():drivers/usb/serial/usb-serial.c ipoctal_hangup():drivers/ipack/devices/ipoctal.c cy_hangup():drivers/tty/cyclades.c isicom_hangup():drivers/tty/isicom.c rp_hangup():drivers/tty/rocket.c dashtty_hangup():drivers/tty/metag_da.c moxa_hangup():drivers/tty/moxa.c gsmtty_hangup():drivers/tty/n_gsm.c goldfish_tty_hangup():drivers/tty/goldfish.c ehv_bc_tty_hangup():drivers/tty/ehv_bytechan.c mxser_hangup():drivers/tty/mxser.c kgdb_nmi_tty_hangup():drivers/tty/serial/kgdb_nmi.c ifx_spi_hangup():drivers/tty/serial/ifx6x60.c ntty_hangup():drivers/tty/nozomi.c capinc_tty_hangup():drivers/isdn/capi/capi.c mgslpc_hangup():drivers/char/pcmcia/synclink_cs.c sdio_uart_hangup():drivers/mmc/card/sdio_uart.c rfcomm_tty_hangup():net/bluetooth/rfcomm/tty.c | +- tty_port_hangup() Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
The tty lock is held when the tty driver's open() method is called (from tty_open()). The call-tree audit [1] of tty_port_block_til_ready() is a closed graph of the callers of tty_port_block_til_ready(); ie., all callers originate only from tty_open(). Of these callers, none drop the tty lock. Also, document tty_port_block_til_ready() may drop and reacquire the tty lock when blocking, which means the tty or tty_port may have changed state. [1] Call-tree audit of tty_port_block_til_ready() * does not include call tree of tty_port_open() which is already documented in 'tty: Document locking from tty_port_open()' tty_open() tty->ops->open() --+ | cy_open():drivers/tty/cyclades.c rp_open():drivers/tty/rocket.c rs_open():drivers/tty/amiserial.c moxa_open():drivers/tty/moxa.c gsmtty_open():drivers/tty/n_gsm.c rs_open():drivers/tty/serial/68328serial.c uart_open():drivers/tty/serial/serial_core.c isdn_tty_open():drivers/isdn/i4l/isdn_tty.c mgslpc_open():drivers/char/pcmcia/synclink_cs.c | +- tty_port_block_til_ready() Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
The tty lock is held when the tty driver's open method is called (from the lone call-site, tty_open()). The call-tree audit [1] of tty_port_open() is a closed graph of the callers of tty_port_open(); ie., all callers originate from only tty_open(). Of these callers, none drop the tty lock. Also, document that tty_port_block_til_ready() may drop and reacquire the tty lock when blocking, which means the tty or tty_port may have changed state. [1] Call-tree audit of tty_port_open() tty_open() tty->ops->open() --+ | rs_open():arch/ia64/hp/sim/simserial.c *line_open():arch/um/drivers/line.c gdm_tty_open():drivers/staging/gdm724x/gdm_tty.c fwtty_open():drivers/staging/fwserial/fwserial.c acm_tty_open():drivers/usb/class/cdc-acm.c serial_open():drivers/usb/serial/usb-serial.c pti_tty_driver_open():drivers/misc/pti.c ipoctal_open():drivers/ipack/devices/ipoctal.c isicom_open():drivers/tty/isicom.c dashtty_open():drivers/tty/metag_da.c goldfish_tty_open():drivers/tty/goldfish.c ehv_bc_tty_open():drivers/tty/ehv_bytechan.c mxser_open():drivers/tty/mxser.c kgdb_nmi_tty_open():drivers/tty/serial/kgdb_nmi.c ifx_spi_open():drivers/tty/serial/ifx6x60.c smd_tty_open():drivers/tty/serial/msm_smd_tty.c ntty_open():drivers/tty/nozomi.c capinc_tty_open():drivers/isdn/capi/capi.c tpk_open():drivers/char/ttyprintk.c sdio_uart_open():drivers/mmc/card/sdio_uart.c rfcomm_tty_open():net/bluetooth/rfcomm/tty.c | +- tty_port_open() * line_open() is the .open method for 2 um drivers declared in ./arch/um/drivers/stdio_console.c and in ./arch/um/drivers/ssl.c, and not called directly Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
The tty lock is held when the tty driver's .close method is called (from the two lone call-sites of tty_release() and __tty_hangup()). The call-tree audit[1] of tty_port_close(), tty_port_close_start, and tty_port_close_end() is a closed graph of the callers of these 3 functions; ie., all callers originate from only tty_release() or __tty_hangup(). Of these callers, none drop the tty lock. Also, document tty_port_close_start() may drop and reacquire the tty lock in tty_wait_until_sent_from_close(), which means the tty or tty_port may have changed state (but not reopened or hung up). [1] Call-tree audit of tty_port_close, tty_port_close_start, and tty_port_close_end() tty_release() tty->ops->close() --+ | __tty_hangup() | tty->ops->close() --+ | +- rp_close():drivers/tty/rocket.c -------------------+ +- uart_close():drivers/tty/serial/serial_core.c -----+ | +- tty_port_close_start() | | +- close():drivers/tty/synclinkmp.c ------------------+ +- rs_close():drivers/tty/amiserial.c ----------------+ +- gsmtty_close():drivers/tty/n_gsm.c ----------------+ +- mxser_close():drivers/tty/mxser.c -----------------+ +- close():drivers/tty/synclink_gt.c -----------------+ +- mgsl_close():drivers/tty/synclink.c ---------------+ +- isdn_tty_close():drivers/isdn/i4l/isdn_tty.c ------+ +- mgslpc_close():drivers/char/pcmcia/synclink_cs.c --+ +- ircomm_tty_close():net/irda/ircomm/ircomm_tty.c ---+ | | rs_close():arch/ia64/hp/sim/simserial.c | *line_close():arch/um/drivers/line.c | gdm_tty_close():drivers/staging/gdm724x/gdm_tty.c fwtty_close():drivers/staging/fwserial/fwserial.c acm_tty_close():drivers/usb/class/cdc-acm.c serial_close():drivers/usb/serial/usb-serial.c pti_tty_driver_close():drivers/misc/pti.c ipoctal_close():drivers/ipack/devices/ipoctal.c cy_close():drivers/tty/cyclades.c isicom_close():drivers/tty/isicom.c dashtty_close():drivers/tty/metag_da.c moxa_close():drivers/tty/moxa.c goldfish_tty_close():drivers/tty/goldfish.c ehv_bc_tty_close():drivers/tty/ehv_bytechan.c kgdb_nmi_tty_close():drivers/tty/serial/kgdb_nmi.c ifx_spi_close():drivers/tty/serial/ifx6x60.c smd_tty_close():drivers/tty/serial/msm_smd_tty.c ntty_close():drivers/tty/nozomi.c capinc_tty_close():drivers/isdn/capi/capi.c tpk_close():drivers/char/ttyprintk.c sdio_uart_close():drivers/mmc/card/sdio_uart.c | rfcomm_tty_close():net/bluetooth/rfcomm/tty.c | | | +- tty_port_close():drivers/tty/tty_port.c -----------+ | +- tty_port_close_start() +- tty_port_close_end() * line_close() is the .close method for 2 um drivers, declared in ./arch/um/drivers/stdio_console.c and in ./arch/um/drivers/ssl.c, and not called directly Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Stefan Agner 提交于
The DMA burst size must match the transmit FIFO depth in order to make sure all character are transmitted. This patch calculates DMA burst size by using FIFO depth rather than use the hardcoded 16 bytes. This is required since some UARTs (e.g. UART2 on Vybrid) have a FIFO depth of 8 bytes. Signed-off-by: NStefan Agner <stefan@agner.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Arun Kumar K 提交于
Adds IDs for MUX clocks to be used by power domain for MFC for doing re-parenting while pd on/off. Signed-off-by: NArun Kumar K <arun.kk@samsung.com> Signed-off-by: NShaik Ameer Basha <shaik.ameer@samsung.com> Acked-by: NTomasz Figa <t.figa@samsung.com> Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
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由 Stefan Agner 提交于
The DMA RX timeout calculation is done based on FIFO buffer size and port timeout when setting up DMA. However, both variables are not necessarily initialized at DMA initialization time, which can lead to a division by zero. Move the timeout calculation to set_termios where both variables are initialized. Signed-off-by: NStefan Agner <stefan@agner.ch> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Peter Hurley 提交于
When a tty is opened for the serial console, the termios c_cflag settings are inherited from the console line settings. However, if the tty is subsequently closed, the termios settings are lost. This results in a garbled console if the console is later suspended and resumed. Preserve the termios c_cflag for the serial console when the tty is shutdown; this reflects the most recent line settings. Fixes: Bugzilla #69751, 'serial console does not wake from S3' Reported-by: NValerio Vanni <valerio.vanni@inwind.it> Acked-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NPeter Hurley <peter@hurleysoftware.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Pradeep Goudagunta 提交于
The Rx dma descriptor allocated without the DMA_ACK flags so that once after tarnsfer done or terminated, client can ack the descriptor to free it for later use. If the Rx DMA is terminated for some reason then rx-dma descriptor is not getting acked which causes the memory leak and list of usage desc to grow continuously. Hence, acknowledge the rx-dma descriptor once transfer is terminated to avoid memory leak and desc list to grow. Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Pradeep Goudagunta 提交于
When channel is require to stop transmit then update the Tx circular buffer only when DMA based transfer is in progress. If there is no DMA based transfer then no need to update the Tx buffer. Signed-off-by: NPradeep Goudagunta <pgoudagunta@nvidia.com> Signed-off-by: NLaxman Dewangan <ldewangan@nvidia.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Arnd Bergmann 提交于
Every uart driver that provides a console driver needs to be built-in for the console code to work, we get a build error for modular console drivers. This changes the SERIAL_HS_LPC32XX_CONSOLE symbol to depend on the SERIAL_HS_LPC32XX driver being built-in, just like we do for all the other uart drivers. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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由 Arnd Bergmann 提交于
When CONFIG_SERIAL_PXA_CONSOLE is disabled, the serial_pxa_get_poll_char and serial_pxa_put_poll_char functions are not defined, and we can't reference them. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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