James Hogan 6979f8d280 serial: 8250_dw: Fix LCR workaround regression ... Commit c49436b657 (serial: 8250_dw: Improve unwritable LCR workaround) caused a regression. It added a check that the LCR was written properly to detect and workaround the busy quirk, but the behaviour of bit 5 (UART_LCR_SPAR) differs between IP versions 3.00a and 3.14c per the docs. On older versions this caused the check to fail and it would repeatedly force idle and rewrite the LCR register, causing delays and preventing any input from serial being received. This is fixed by masking out UART_LCR_SPAR before making the comparison. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Tim Kryger <tim.kryger@linaro.org> Cc: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Cc: Matt Porter <matt.porter@linaro.org> Cc: Markus Mayer <markus.mayer@linaro.org> Tested-by: Tim Kryger <tim.kryger@linaro.org> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Tested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-12-16 17:10:46 -08:00
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8250_accent.c
8250_acorn.c	tty: remove use of __devexit	2012-11-21 15:27:46 -08:00
8250_boca.c
8250_core.c	serial: 8250: don't change the fifo trigger level when using dma	2013-09-26 14:27:24 -07:00
8250_dma.c	serial: 8250_dma: Provide default slave configuration parameters	2013-04-11 13:20:19 -07:00
8250_dw.c	serial: 8250_dw: Fix LCR workaround regression	2013-12-16 17:10:46 -08:00
8250_early.c	serial: 8250_early: fix comparison of different types	2013-08-12 11:35:31 -07:00
8250_em.c	serial8250-em: convert to clk_prepare/unprepare	2013-10-16 13:07:14 -07:00
8250_exar_st16c554.c
8250_fourport.c
8250_fsl.c
8250_gsc.c	parisc: Fix interrupt routing for C8000 serial ports	2013-07-31 23:42:32 +02:00
8250_hp300.c	tty: remove use of __devexit	2012-11-21 15:27:46 -08:00
8250_hub6.c
8250_pci.c	serial: 8250_pci: add Pericom PCIe Serial board Support (12d8:7952/4/8) - Chip PI7C9X7952/4/8	2013-10-19 19:51:17 -07:00
8250_pnp.c	Revert "tty/8250_pnp: serial port detection regression since v3.7"	2013-04-08 11:30:04 -07:00
8250.h	serial: 8250: remove a few lines of dead code	2013-03-25 16:36:48 -07:00
Kconfig	tty/serial/8250: fix typo in help text	2013-11-25 08:52:53 -08:00
Makefile	TTY: 8250, revert module name change	2013-03-25 16:26:23 -07:00
serial_cs.c	drivers/tty: use module_pcmcia_driver() in pcmcia drivers	2013-03-15 12:26:38 -07:00