9deaa53ac7
Sending a break on the SOC UARTs found in some MPC83xx/85xx/86xx chips seems to cause a short lived IRQ storm (/proc/interrupts typically shows somewhere between 300 and 1500 events). Unfortunately this renders SysRQ over the serial console completely inoperable. The suggested workaround in the errata is to read the Rx register, wait one character period, and then read the Rx register again. We achieve this by tracking the old LSR value, and on the subsequent interrupt event after a break, we don't read LSR, instead we just read the RBR again and return immediately. The "fsl,ns16550" is used in the compatible field of the serial device to mark UARTs known to have this issue. Thanks to Scott Wood for providing the errata data which led to a much cleaner fix. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
99 lines
4.1 KiB
Makefile
99 lines
4.1 KiB
Makefile
#
|
|
# Makefile for the kernel serial device drivers.
|
|
#
|
|
|
|
obj-$(CONFIG_SERIAL_CORE) += serial_core.o
|
|
obj-$(CONFIG_SERIAL_21285) += 21285.o
|
|
|
|
# These Sparc drivers have to appear before others such as 8250
|
|
# which share ttySx minor node space. Otherwise console device
|
|
# names change and other unplesantries.
|
|
obj-$(CONFIG_SERIAL_SUNCORE) += suncore.o
|
|
obj-$(CONFIG_SERIAL_SUNHV) += sunhv.o
|
|
obj-$(CONFIG_SERIAL_SUNZILOG) += sunzilog.o
|
|
obj-$(CONFIG_SERIAL_SUNSU) += sunsu.o
|
|
obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
|
|
|
|
obj-$(CONFIG_SERIAL_8250) += 8250.o
|
|
obj-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o
|
|
obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
|
|
obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o
|
|
obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o
|
|
obj-$(CONFIG_SERIAL_8250_CS) += serial_cs.o
|
|
obj-$(CONFIG_SERIAL_8250_ACORN) += 8250_acorn.o
|
|
obj-$(CONFIG_SERIAL_8250_CONSOLE) += 8250_early.o
|
|
obj-$(CONFIG_SERIAL_8250_FOURPORT) += 8250_fourport.o
|
|
obj-$(CONFIG_SERIAL_8250_ACCENT) += 8250_accent.o
|
|
obj-$(CONFIG_SERIAL_8250_BOCA) += 8250_boca.o
|
|
obj-$(CONFIG_SERIAL_8250_EXAR_ST16C554) += 8250_exar_st16c554.o
|
|
obj-$(CONFIG_SERIAL_8250_HUB6) += 8250_hub6.o
|
|
obj-$(CONFIG_SERIAL_8250_MCA) += 8250_mca.o
|
|
obj-$(CONFIG_SERIAL_8250_FSL) += 8250_fsl.o
|
|
obj-$(CONFIG_SERIAL_8250_DW) += 8250_dw.o
|
|
obj-$(CONFIG_SERIAL_AMBA_PL010) += amba-pl010.o
|
|
obj-$(CONFIG_SERIAL_AMBA_PL011) += amba-pl011.o
|
|
obj-$(CONFIG_SERIAL_CLPS711X) += clps711x.o
|
|
obj-$(CONFIG_SERIAL_PXA) += pxa.o
|
|
obj-$(CONFIG_SERIAL_PNX8XXX) += pnx8xxx_uart.o
|
|
obj-$(CONFIG_SERIAL_SA1100) += sa1100.o
|
|
obj-$(CONFIG_SERIAL_BCM63XX) += bcm63xx_uart.o
|
|
obj-$(CONFIG_SERIAL_BFIN) += bfin_uart.o
|
|
obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
|
|
obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
|
|
obj-$(CONFIG_SERIAL_S3C2410) += s3c2410.o
|
|
obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
|
|
obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
|
|
obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
|
|
obj-$(CONFIG_SERIAL_S5PV210) += s5pv210.o
|
|
obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
|
|
obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
|
|
obj-$(CONFIG_SERIAL_MAX3107_AAVA) += max3107-aava.o
|
|
obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
|
|
obj-$(CONFIG_SERIAL_MUX) += mux.o
|
|
obj-$(CONFIG_SERIAL_68328) += 68328serial.o
|
|
obj-$(CONFIG_SERIAL_MCF) += mcf.o
|
|
obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
|
|
obj-$(CONFIG_SERIAL_DZ) += dz.o
|
|
obj-$(CONFIG_SERIAL_ZS) += zs.o
|
|
obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
|
|
obj-$(CONFIG_SERIAL_SGI_L1_CONSOLE) += sn_console.o
|
|
obj-$(CONFIG_SERIAL_CPM) += cpm_uart/
|
|
obj-$(CONFIG_SERIAL_IMX) += imx.o
|
|
obj-$(CONFIG_SERIAL_MPC52xx) += mpc52xx_uart.o
|
|
obj-$(CONFIG_SERIAL_ICOM) += icom.o
|
|
obj-$(CONFIG_SERIAL_M32R_SIO) += m32r_sio.o
|
|
obj-$(CONFIG_SERIAL_MPSC) += mpsc.o
|
|
obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o
|
|
obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
|
|
obj-$(CONFIG_SERIAL_SC26XX) += sc26xx.o
|
|
obj-$(CONFIG_SERIAL_JSM) += jsm/
|
|
obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
|
|
obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
|
|
obj-$(CONFIG_SERIAL_SGI_IOC4) += ioc4_serial.o
|
|
obj-$(CONFIG_SERIAL_SGI_IOC3) += ioc3_serial.o
|
|
obj-$(CONFIG_SERIAL_ATMEL) += atmel_serial.o
|
|
obj-$(CONFIG_SERIAL_UARTLITE) += uartlite.o
|
|
obj-$(CONFIG_SERIAL_MSM) += msm_serial.o
|
|
obj-$(CONFIG_SERIAL_MSM_HS) += msm_serial_hs.o
|
|
obj-$(CONFIG_SERIAL_NETX) += netx-serial.o
|
|
obj-$(CONFIG_SERIAL_OF_PLATFORM) += of_serial.o
|
|
obj-$(CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL) += nwpserial.o
|
|
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o
|
|
obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o
|
|
obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
|
|
obj-$(CONFIG_SERIAL_QE) += ucc_uart.o
|
|
obj-$(CONFIG_SERIAL_TIMBERDALE) += timbuart.o
|
|
obj-$(CONFIG_SERIAL_GRLIB_GAISLER_APBUART) += apbuart.o
|
|
obj-$(CONFIG_SERIAL_ALTERA_JTAGUART) += altera_jtaguart.o
|
|
obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o
|
|
obj-$(CONFIG_SERIAL_VT8500) += vt8500_serial.o
|
|
obj-$(CONFIG_SERIAL_MRST_MAX3110) += mrst_max3110.o
|
|
obj-$(CONFIG_SERIAL_MFD_HSU) += mfd.o
|
|
obj-$(CONFIG_SERIAL_IFX6X60) += ifx6x60.o
|
|
obj-$(CONFIG_SERIAL_PCH_UART) += pch_uart.o
|
|
obj-$(CONFIG_SERIAL_MSM_SMD) += msm_smd_tty.o
|
|
obj-$(CONFIG_SERIAL_MXS_AUART) += mxs-auart.o
|
|
obj-$(CONFIG_SERIAL_LANTIQ) += lantiq.o
|
|
obj-$(CONFIG_SERIAL_XILINX_PS_UART) += xilinx_uartps.o
|
|
obj-$(CONFIG_SERIAL_SIRFSOC) += sirfsoc_uart.o
|