AuxXxilium/linux_dsm_epyc7002
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756981be74
linux_dsm_epyc7002/drivers/tty/serial
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Geert Uytterhoeven 756981be74 serial: sh-sci: Submit RX DMA from RX interrupt on (H)SCIF 
For DMA receive requests, the driver is only notified by DMA completion
after the whole DMA request has been transferred.  If less data is
received, it will stay stuck until more data arrives.  The driver
handles this by setting up a timer handler from the receive interrupt,
after reception of the first character.

Unlike SCIFA and SCIFB, SCIF and HSCIF don't issue receive interrupts on
reception of individual characters if a receive DMA request is in
progress, so the timer is never set up.

To fix receive DMA on SCIF and HSCIF, submit the receive DMA request
from the receive interrupt handler instead.
In some sense this is similar to the SCIFA/SCIFB behavior, where the
RDRQE (Rx Data Transfer Request Enable) bit is also set from the receive
interrupt handler.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04 17:36:10 +01:00
..
8250 serial: 8250: Fix autoconfig_irq() to avoid race conditions 2015-10-04 17:30:20 +01:00
cpm_uart tty: cpm_uart: replace CONFIG_8xx by CONFIG_CPM1 2015-03-26 23:00:36 +01:00
jsm serial: jsm: some off by one bugs 2015-03-26 23:00:36 +01:00
21285.c serial: treewide: Remove empty implementations of enable_ms() 2014-07-09 17:29:38 -07:00
68328serial.c tty: 68328serial.c: move assignment out of if () block 2015-05-10 19:04:16 +02:00
altera_jtaguart.c drivers/tty/serial: altera: fix typos in #endif comments 2015-05-06 22:26:58 +02:00
altera_uart.c drivers/tty/serial: altera: fix typos in #endif comments 2015-05-06 22:26:58 +02:00
amba-pl010.c serial: Test/disable MSIs if switching from N_PPS 2014-11-06 14:57:27 -08:00
amba-pl011.c Revert "uart: pl011: Rename regs with enumeration" 2015-09-04 09:14:43 -07:00
apbuart.c tty: constify of_device_id array 2015-03-26 22:49:10 +01:00
apbuart.h
ar933x_uart.c serial: ar933x_uart: Fix off-by-one for checking valid alias id 2015-03-07 03:20:25 +01:00
arc_uart.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
atmel_serial.c tty/serial: at91: fix I/O accesses on RHR and THR for AVR32 2015-08-04 22:07:22 -07:00
bcm63xx_uart.c tty: serial/bcm63xx_uart: fix sparse warning 2015-03-07 03:13:07 +01:00
bfin_sport_uart.c tty: pr_warning->pr_warn and logging neatening 2014-11-25 17:06:38 -08:00
bfin_sport_uart.h
bfin_uart.c serial: bfin: ctsrts: enfore Kconfig naming convention 2015-05-06 22:26:59 +02:00
clps711x.c serial: clps711x: fail if mctrl_gpio_init fails 2015-03-07 03:15:03 +01:00
crisv10.c tty: crisv10.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
crisv10.h cris: Remove obsolete ASYNC_SPLIT_TERMIOS behavior 2014-11-05 20:18:30 -08:00
digicolor-usart.c tty/serial: digicolor: remove sysrq reference 2015-02-02 10:11:25 -08:00
dz.c serial: treewide: Remove empty implementations of enable_ms() 2014-07-09 17:29:38 -07:00
dz.h
earlycon-arm-semihost.c tty/serial: add arm/arm64 semihosting earlycon 2014-04-24 16:32:27 -07:00
earlycon.c serial: earlycon: Add support for big-endian MMIO accesses 2015-06-01 06:55:12 +09:00
efm32-uart.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
etraxfs-uart.c serial: etraxfs-uart: use mctrl_gpio helpers for handling modem signals 2015-08-04 22:07:20 -07:00
fsl_lpuart.c Merge 4.0-rc7 into tty-next 2015-04-07 11:07:20 +02:00
icom.c tty: icom.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
icom.h
ifx6x60.c serial: ifx6x60: Remove superfluous casts when calling request_irq() 2015-05-06 22:27:01 +02:00
ifx6x60.h
imx.c serial: imx: save and restore context in the suspend path 2015-08-14 17:23:25 -07:00
ioc3_serial.c tty: ioc3_serial.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
ioc4_serial.c tty: ioc4_serial.c: move assignment out of if () block 2015-05-10 19:04:17 +02:00
ip22zilog.c serial: use container_of to resolve uart_ip22zilog_port from uart_port 2014-11-05 19:20:52 -08:00
ip22zilog.h
Kconfig serial: sh-sci: Switch to generic DMA residue handling 2015-10-04 17:33:48 +01:00
kgdb_nmi.c serial: kgdb_nmi: Use bool function return values of true/false not 1/0 2015-05-06 22:26:57 +02:00
kgdboc.c
lantiq.c drivers/tty: make serial/lantic.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
lpc32xx_hs.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
m32r_sio_reg.h
m32r_sio.c serial: use container_of to resolve uart_sio_port from uart_port 2014-11-05 19:20:52 -08:00
m32r_sio.h
Makefile serial: stm32-usart: Add STM32 USART Driver 2015-06-10 17:34:26 -07:00
max310x.c drivers/max310: Use the rs485 functions on serial_core 2014-11-06 15:00:15 -08:00
max3100.c tty: max3100: use msecs_to_jiffies for time conversion 2015-03-07 03:13:08 +01:00
mcf.c drivers/tty/serial/mcf.c: fix typo on SERIAL_MCF_CONSOLE 2015-05-06 22:26:59 +02:00
men_z135_uart.c tty: serial: men_z135_uart.c: Don't initialize port->lock 2015-08-14 17:14:13 -07:00
meson_uart.c ARM: meson: serial: convert iounmap to devm_iounmap 2015-05-06 22:27:02 +02:00
mpc52xx_uart.c serial: mpc52xx: add delay after resetting transmitter to fix broken chars 2015-10-04 17:27:56 +01:00
mpsc.c drivers/tty: make serial/mpsc.c driver explicitly non-modular 2015-10-04 17:27:56 +01:00
msm_serial.c tty: serial: msm_serial: Remove console unregistration from driver exit. 2015-02-02 10:11:25 -08:00
msm_serial.h tty: serial: msm_serial: Remove dead code 2015-03-26 22:31:09 +01:00
mux.c serial: treewide: Remove empty implementations of enable_ms() 2014-07-09 17:29:38 -07:00
mxs-auart.c serial: mxs-auart: fix baud rate range 2015-08-14 17:08:48 -07:00
netx-serial.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
nwpserial.c serial: Fix build failure caused by missing header file 2014-09-08 16:17:45 -07:00
of_serial.c serial: of_serial: check the return value of clk_prepare_enable() 2015-06-01 06:55:12 +09:00
omap-serial.c serial: omap: Switch wake-up interrupt to generic wakeirq 2015-06-09 23:35:00 -07:00
pch_uart.c pch_uart: don't hardcode PCI slot to get DMA device 2014-08-01 16:04:21 -07:00
pmac_zilog.c tty: constify of_device_id array 2015-03-26 22:49:10 +01:00
pmac_zilog.h
pnx8xxx_uart.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
pxa.c tty: constify of_device_id array 2015-03-26 22:49:10 +01:00
rp2.c tty: remove DEFINE_PCI_DEVICE_TABLE macro 2013-12-08 17:09:07 -08:00
sa1100.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
samsung.c serial: samsung: fix DMA for FIFO smaller than cache line size 2015-08-04 22:07:24 -07:00
samsung.h serial: samsung: fix DMA mode enter condition for small FIFO sizes 2015-08-04 22:07:23 -07:00
sb1250-duart.c serial: Fix IGNBRK handling 2014-06-19 13:04:52 -07:00
sc16is7xx.c sc16is7xx: constify devtype 2015-08-04 22:07:27 -07:00
sccnxp.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
serial_core.c serial: core: Remove tty port activate() and shutdown() methods 2015-08-04 22:07:23 -07:00
serial_ks8695.c tty/serial: kill off set_irq_flags usage 2015-06-09 12:26:32 -07:00
serial_mctrl_gpio.c TTY/Serial driver patches for 4.2-rc1 2015-06-26 15:53:22 -07:00
serial_mctrl_gpio.h tty/serial: Add GPIOLIB helpers for controlling modem lines 2014-05-28 12:49:14 -07:00
serial_txx9.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
serial-tegra.c serial: tegra: Fix memory leak on DMA setup failure 2015-05-24 12:53:44 -07:00
sh-sci.c serial: sh-sci: Submit RX DMA from RX interrupt on (H)SCIF 2015-10-04 17:36:10 +01:00
sh-sci.h serial: sh-sci: Correct SCIF_ERROR_CLEAR for plain SCIF 2015-10-04 17:33:48 +01:00
sirfsoc_uart.c serial: sirf: let uart's receive start in right place 2015-07-23 15:32:04 -07:00
sirfsoc_uart.h serial: sirf: let uart's receive start in right place 2015-07-23 15:32:04 -07:00
sn_console.c drivers/tty: make serial/sn_console.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
sprd_serial.c serial: sprd: check for NULL after calling devm_clk_get 2015-06-12 17:39:50 -07:00
st-asc.c tty: constify of_device_id array 2015-03-26 22:49:10 +01:00
stm32-usart.c serial: stm32-usart: Fix SysRq support 2015-07-23 17:37:53 -07:00
suncore.c drivers/tty: make serial/suncore.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
sunhv.c drivers/tty: make serial/sunhv.c driver explicitly non-modular 2015-07-23 18:27:41 -07:00
sunsab.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
sunsab.h
sunsu.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
sunzilog.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
sunzilog.h
tilegx.c serial: treewide: Remove empty implementations of enable_ms() 2014-07-09 17:29:38 -07:00
timbuart.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
timbuart.h
uartlite.c serial: xilinx: Use platform_get_irq to get irq description structure 2015-04-28 14:26:21 +02:00
ucc_uart.c serial/uuc_uart: Support higher bitrates than 115200 Bit/s 2015-07-23 18:05:00 -07:00
vr41xx_siu.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
vt8500_serial.c tty: serial: drop owner assignment from platform_drivers 2014-10-20 16:21:45 +02:00
xilinx_uartps.c serial: xuartps: add __init to earlycon write method 2015-05-10 19:10:08 +02:00
zs.c serial: Fix IGNBRK handling 2014-06-19 13:04:52 -07:00
zs.h