299245a145b2ad4cfb4c5432eb1264299f55e7e0 |
|
10-Sep-2014 |
Peter Hurley <peter@hurleysoftware.com> |
serial: core: Privatize modem status enable flags The serial core uses the tty port flags, ASYNC_CTS_FLOW and ASYNC_CD_CHECK, to track whether CTS and DCD changes should be ignored or handled. However, the tty port flags are not safe for atomic bit operations and no lock provides serialized updates. Introduce the struct uart_port status field to track CTS and DCD enable states, and serialize access with uart port lock. Substitute uart_cts_enabled() helper for tty_port_cts_enabled(). Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
8b152f1096975d012f60387b899d407e4a93b46c |
|
03-Jun-2014 |
Alexander Shiyan <shc_work@mail.ru> |
serial: treewide: Remove empty implementations of enable_ms() Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
ef8b9ddcb45fa3b1e11acd72be2398001e807d14 |
|
16-Jun-2014 |
Peter Hurley <peter@hurleysoftware.com> |
serial: Fix IGNBRK handling If IGNBRK is set without either BRKINT or PARMRK set, some uart drivers send a 0x00 byte for BREAK without the TTYBREAK flag to the line discipline, when it should send either nothing or the TTYBREAK flag set. This happens because the read_status_mask masks out the BI condition, which uart_insert_char() then interprets as a normal 0x00 byte. SUS v3 is clear regarding the meaning of IGNBRK; Section 11.2.2, General Terminal Interface - Input Modes, states: "If IGNBRK is set, a break condition detected on input shall be ignored; that is, not put on the input queue and therefore not read by any process." Fix read_status_mask to include the BI bit if IGNBRK is set; the lsr status retains the BI bit if a BREAK is recv'd, which is subsequently ignored in uart_insert_char() when masked with the ignore_status_mask. Affected drivers: 8250 - all serial_txx9 mfd amba-pl010 amba-pl011 atmel_serial bfin_uart dz ip22zilog max310x mxs-auart netx-serial pnx8xxx_uart pxa sb1250-duart sccnxp serial_ks8695 sirfsoc_uart st-asc vr41xx_siu zs sunzilog fsl_lpuart sunsab ucc_uart bcm63xx_uart sunsu efm32-uart pmac_zilog mpsc msm_serial m32r_sio Unaffected drivers: omap-serial rp2 sa1100 imx icom Annotated for fixes: altera_uart mcf Drivers without break detection: 21285 xilinx-uartps altera_jtaguart apbuart arc-uart clps711x max3100 uartlite msm_serial_hs nwpserial lantiq vt8500_serial Unknown: samsung mpc52xx_uart bfin_sport_uart cpm_uart/core Fixes: Bugzilla #71651, '8250_core.c incorrectly handles IGNBRK flag' Reported-by: Ivan <athlon_@mail.ru> Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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4e857c58efeb99393cba5a5d0d8ec7117183137c |
|
17-Mar-2014 |
Peter Zijlstra <peterz@infradead.org> |
arch: Mass conversion of smp_mb__*() Mostly scripted conversion of the smp_mb__* barriers. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-55dhyhocezdw1dg7u19hmh1u@git.kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
9bbc3dca9d2212f900396ab9642c48279657a8c0 |
|
02-Dec-2013 |
Fabio Estevam <fabio.estevam@freescale.com> |
tty: serial: mxs-auart: Check the return value from clk_prepare_enable() clk_prepare_enable() may fail, so let's check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
9987f76ad286887978803ece6cdcf34582279a29 |
|
03-Oct-2013 |
Hector Palacios <hector.palacios@digi.com> |
serial: mxs-auart: set the FIFO size to DMA buffer size When DMA is enabled (with hardware flow control enabled) the FIFO size must be set to the size of the DMA buffer, as this is the size the tty subsystem can use. Signed-off-by: Hector Palacios <hector.palacios@digi.com> Reviewed-by: Marek Vasut <marex@denx.de> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
afab220396bf9a728098996d73775fd1aaa712f8 |
|
03-Aug-2013 |
Huang Shijie <shijie8@gmail.com> |
serial: mxs: remove the MXS_AUART_DMA_CONFIG The MXS_AUART_DMA_CONFIG is originally used to check if the DT node is configured with the DMA property. But now, the MXS_AUART_DMA_CONFIG is set unconditionally in the serial_mxs_probe_dt(), so the check in the mxs_auart_settermios() is not necessary anymore. This patch removes this macro. Signed-off-by: Huang Shijie <shijie8@gmail.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
8418e67d95235c3449df6f2e5b33863343fa72f9 |
|
03-Aug-2013 |
Huang Shijie <b32955@freescale.com> |
serial: mxs: enable the DMA only when the RTS/CTS is valid The original DMA support works only when RTS/CTS is enabled. (see the "e800163 serial: mxs-auart: add the DMA support for mx28") But after several patches, DMA support has lost this limit. (see the "bcc20f9 serial: mxs-auart: move to use generic DMA helper") So an UART without the RTS/CTS lines may also enables the DMA support, in which case the UART may gets unpredictable results. This patch adds an optional property for the UART DT node which indicates the UART has RTS and CTS lines, and it also means you enable the DMA support for this UART. This patch also adds a macro MXS_AUART_RTSCTS, and uses it to check RTS/CTS before we enable the DMA for the UART. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Huang Shijie <shijie8@gmail.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
079a036f4283e2b0e5c26080b8c5112bc0cc1831 |
|
28-Jun-2013 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
serial/mxs-auart: increase time to wait for transmitter to become idle Without this patch the driver waits ~1 ms for the UART to become idle. At 115200n8 this time is (theoretically) enough to transfer 11.5 characters (= 115200 bits/s / (10 Bits/char) * 1ms). As the mxs-auart has a fifo size of 16 characters the clock is gated too early. The problem is worse for lower baud rates. This only happens to really shut down the transmitter in the middle of a transfer if /dev/ttyAPPx isn't opened in userspace (e.g. by a getty) but was at least once (because the bootloader doesn't disable the transmitter). So increase the timeout to 20 ms which should be enough for 9600n8, too. Moreover skip gating the clock if the timeout is elapsed. Cc: stable@vger.kernel.org # v2.6.39+ Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
d970d7fe65adff5efe75b4a73c4ffc9be57089f7 |
|
04-Jul-2013 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
serial/mxs-auart: fix race condition in interrupt handler The handler needs to ack the pending events before actually handling them. Otherwise a new event might come in after it it considered non-pending or handled and is acked then without being handled. So this event is only noticed when the next interrupt happens. Without this patch an i.MX28 based machine running an rt-patched kernel regularly hangs during boot. Cc: stable@vger.kernel.org # v2.6.39+ Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
e84f54fc58ada30f67b7353f6c16c3c4aa7c8da5 |
|
10-Jul-2013 |
Wolfram Sang <wsa@the-dreams.de> |
drivers/tty/serial: don't use devm_pinctrl_get_select_default() in probe Since commit ab78029 (drivers/pinctrl: grab default handles from device core), we can rely on device core for setting the default pins. Compile tested only. Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
4c24f2c9b671a1dacf2e25a3b059b54bb8899de1 |
|
19-Apr-2013 |
Wolfram Sang <wsa@the-dreams.de> |
serial: mxs: drop superfluous {get|put}_device Driver core already takes care of refcounting, no need to do this on driver level again. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
4829e7650f8a40645e4e32b26a37fb833a5e75f0 |
|
19-Apr-2013 |
Wolfram Sang <wsa@the-dreams.de> |
serial: mxs: fix buffer overflow SMATCH correctly found an off-by-one error: drivers/tty/serial/mxs-auart.c:889 auart_console_write() error: buffer overflow 'auart_port' 5 <= 5 Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
bcc20f9e40bdfa6c3f254bcb90d8657fe7bba04d |
|
26-Feb-2013 |
Shawn Guo <shawn.guo@linaro.org> |
serial: mxs-auart: move to use generic DMA helper With the generic DMA device tree helper supported by mxs-dma driver, client devices only need to call dma_request_slave_channel() for requesting a DMA channel from dmaengine. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
|
2e124b4a390ca85325fae75764bef92f0547fa25 |
|
03-Jan-2013 |
Jiri Slaby <jslaby@suse.cz> |
TTY: switch tty_flip_buffer_push Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. Now, the one where most of tty_port_tty_get gets removed: tty_flip_buffer_push. IOW we also closed all the races in drivers not using tty_port_tty_get at all yet. Also we move tty_flip_buffer_push declaration from include/linux/tty.h to include/linux/tty_flip.h to all others while we are changing it anyway. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
05c7cd39907184328f48d3e7899f9cdd653ad336 |
|
03-Jan-2013 |
Jiri Slaby <jslaby@suse.cz> |
TTY: switch tty_insert_flip_string Now, we start converting tty buffer functions to actually use tty_port. This will allow us to get rid of the need of tty in many call sites. Only tty_port will needed and hence no more tty_port_tty_get in those paths. tty_insert_flip_string this time. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
81a7d777497aa4f8c4b5f46b2b8b978779840462 |
|
29-Dec-2012 |
Thomas Jarosch <thomas.jarosch@intra2net.com> |
serial: mxs-auart: Fix typo in sanity check Detected by cppcheck: [others/linux/drivers/tty/serial/mxs-auart.c:553]: (style) Same expression on both sides of '||'. Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
87b8bed2ce9394870a87e4fb2aef6752b2bd837d |
|
08-Jan-2013 |
fabio.estevam@freescale.com <fabio.estevam@freescale.com> |
serial: mxs-auart: Index is unsigned Fix the following warning when building with W=1 option: drivers/tty/serial/mxs-auart.c: In function 'mxs_auart_tx_chars': drivers/tty/serial/mxs-auart.c:272:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Marek Vasut <marex@denx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
a6833214cfc6fa8a7c59426af77794cc190c6cfc |
|
13-Dec-2012 |
Steffen Trumtrar <s.trumtrar@pengutronix.de> |
mxs: uart: fix setting RTS from software With the patch "serial: mxs-auart: fix the wrong RTS hardware flow control" the mainline mxs-uart driver now sets RTSEN only when hardware flow control is enabled via software. It is not possible any longer to set RTS manually via software. However, the manual modification is a valid operation. Regain the possibility to set RTS via software and only set RTSEN when hardware flow control is explicitly enabled via settermios cflag CRTSCTS. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: stable <stable@vger.kernel.org> Reviewed-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
d7ffb9329012a517575e4c4d49480b6ce0d1529e |
|
22-Nov-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: unmap the scatter list before we copy the data We should first unmap the DMA scatter list for receiving data, and then copy the data from the DMA buffer. The old code misses unmap the scatter list for RX. This patch fixes it. Signed-off-by: Huang Shijie <b32955@freescale.com> Tested-by: Lauri Hintsala <lauri.hintsala@bluegiga.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
a5919442bc61846e36011671df0d67c72275337e |
|
22-Nov-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: disable the Receive Timeout Interrupt when DMA is enabled When the DMA is enabled, the Receive Timeout interrupt is very easy to be arised in the 3M baud rate. The interrupt handler (aka mxs_auart_irq_handle) will call mxs_auart_rx_chars() to handle the received data. This is not right, we can not get the correct data from the RXFIFO now, the data have been moved to the DMA buffer by the DMA engine. This patch (1) disables the Receive Timeout Interrupt when the DMA is enabled, (2) and invoke the mxs_auart_rx_chars() only when the DMA is not enabled. Signed-off-by: Huang Shijie <b32955@freescale.com> Tested-by: Lauri Hintsala <lauri.hintsala@bluegiga.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
ae8d8a146725a966bd7c59c94f4d0016dcf7a04f |
|
19-Nov-2012 |
Bill Pemberton <wfp5p@virginia.edu> |
tty: remove use of __devexit CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Acked-by: Tobias Klauser <tklauser@distanz.ch> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: Daniel Walker <dwalker@fifo99.com> Cc: Bryan Huntsman <bryanh@codeaurora.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: David Brown <davidb@codeaurora.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
9671f09921d93e722a28ae9610d478e092ac5466 |
|
19-Nov-2012 |
Bill Pemberton <wfp5p@virginia.edu> |
tty: remove use of __devinit CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
2d47b7160243b1422006b91debf438484a4fde58 |
|
19-Nov-2012 |
Bill Pemberton <wfp5p@virginia.edu> |
tty: serial: remove use of __devexit_p CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Alan Cox <alan@linux.intel.com> Cc: Lucas Tavares <lucaskt@linux.vnet.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Peter Korsgaard <jacmet@sunsite.dk> Cc: Tony Prisk <linux@prisktech.co.nz> Acked-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
e8001632816e600ced7d9d4790930fd87935c654 |
|
16-Nov-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: add the DMA support for mx28 Only we meet the following conditions, we can enable the DMA support for auart: (1) We enable the DMA support in the dts file, such as arch/arm/boot/dts/imx28.dtsi. (2) We enable the hardware flow control. (3) We use the mx28, not the mx23. Due to hardware bug(see errata: 2836), we can not add the DMA support to mx23. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
f4b1f03b826ba22c9835e9e89a1ca03541313e04 |
|
16-Nov-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: distinguish the different SOCs The current mxs-auart driver is used for both mx23 and mx28. But in mx23, the DMA has a bug(see errata:2836). We can not add the DMA support in mx23, but we can add DMA support to auart in mx28. So in order to add the DMA support for the auart in mx28, we should distinguish the distinguish SOCs. This patch adds a new platform_device_id table and a inline function is_imx28_auart() to distinguish the mx23 and mx28. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
23666a74c9f552bc9cfef20ded1b8b29bedb80c6 |
|
11-Sep-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: put the device in the error path The mxs_auart_probe() gets the device by the get_device(). So we should put the device in the error path to balance the device's reference counter. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
b69200fbdf209f356f375da0cfd672f61c7a5866 |
|
07-Sep-2012 |
Huang Shijie <shijie8@gmail.com> |
serial: mxs-auart: put the device in mxs_auart_probe() We call the get_device() in the mxs_auart_probe(). For the balance of the reference count, we should put the device in the mxs_auart_remove(). Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
851b714b29db0e394c293170e714f90a778060ad |
|
07-Sep-2012 |
Huang Shijie <shijie8@gmail.com> |
serial: mxs-auart: fix the wrong setting order After set the AUART_CTRL0_CLKGATE, the UART will gate all the clocks off. So the following line will not take effect. ................................................................ writel(AUART_INTR_RXIEN | AUART_INTR_RTIEN | AUART_INTR_CTSMIEN, u->membase + AUART_INTR_CLR); ................................................................ To fix this issue, the patch moves this gate-off line to the end of setting registers. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
f21ec3d2d46e5f2ffc06f31fe2704fdcea7a58f3 |
|
23-Aug-2012 |
Huang Shijie <shijie8@gmail.com> |
serial: add a new helper function In most of the time, the driver needs to check if the cts flow control is enabled. But now, the driver checks the ASYNC_CTS_FLOW flag manually, which is not a grace way. So add a new wraper function to make the code tidy and clean. Signed-off-by: Huang Shijie <shijie8@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
00592021010ad86d3b26bac7034034f6af145a2c |
|
08-Aug-2012 |
Huang Shijie <b32955@freescale.com> |
serial: mxs-auart: fix the wrong RTS hardware flow control Without checking if the auart supports the hardware flow control or not, the old mxs_auart_set_mctrl() asserted the RTS pin blindly. This will causes the auart receives wrong data in the following case: The far-end has already started the write operation, and wait for the auart asserts the RTS pin. Then the auart starts the read operation, but mxs_auart_set_mctrl() may be called before we set the RTSCTS in the mxs_auart_settermios(). So the RTS pin is asserted in a wrong situation, and we get the wrong data in the end. This bug has been catched when I connect the mx23(DTE) to the mx53(DCE). This patch also replaces the AUART_CTRL2_RTS with AUART_CTRL2_RTSEN. We should use the real the hardware flow control, not the software-controled hardware flow control. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
1ea6607d4cdc917987e7e6cfaafc4a630d97a297 |
|
18-Jun-2012 |
Fabio Estevam <fabio.estevam@freescale.com> |
serial: mxs-auart: Allow device tree probing Allow device tree probing. Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: Alan Cox <alan@linux.intel.com> Cc: <linux-serial@vger.kernel.org> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Subodh Nijsure <snijsure@grid-net.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
|
2e174c3373bdbb4a4f35ac48d7c7fea181062f6f |
|
06-May-2012 |
Shawn Guo <shawn.guo@linaro.org> |
serial: mxs-auart: adopt pinctrl support Cc: linux-serial@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
|
8b979f7c6bf13a57e7b6002f1175312a44773960 |
|
03-May-2012 |
Lothar Waßmann <LW@KARO-electronics.de> |
Add missing call to uart_update_timeout() This patch fixes a problem reported here: http://article.gmane.org/gmane.linux.ports.arm.kernel/155242/match=auart Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
a481377013c1c07dac0421886db7a6b4c3081c49 |
|
20-Dec-2011 |
Shawn Guo <shawn.guo@linaro.org> |
serial: mxs-auart: convert to clk_prepare/clk_unprepare The patch converts mxs-auart driver to clk_prepare/clk_unprepare by using helper functions clk_prepare_enable/clk_disable_unprepare. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Alan Cox <alan@linux.intel.com>
|
d0758a285caaf86192cdb22136a5eb84ed72f276 |
|
22-Nov-2011 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
serial/mxs-auart: only wake up tty layer once There is no need to call uart_write_wakeup after each character send. Once at the end of the write sequence is enough. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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18fd7315cc475ff53c60e5e7b3bad126c0163527 |
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14-Feb-2011 |
Jesper Juhl <jj@chaosbits.net> |
Freescale STMP37XX/STMP378X Application UART driver: remove duplicate linux/device.h include Do not include linux/device.h twice in drivers/tty/serial/mxs-auart.c . Once is enough. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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