linux/drivers/tty/serial/8250
Peter Hurley a6eec92ec0 Revert "serial: uart: add hw flow control support configuration"
This reverts commit 06aa82e498.
This commit purports to enable auto CTS flow control for the 8250
UART driver. However, the 8250 UART driver already supports auto
CTS flow control via UART_CAP_AFE and UART_CAP_EFR. Indeed, this
patch introduces another DT attribute for which an existing firmware
flag already exists ("auto-flow-control"). Furthermore, the use of
UPF_HARD_FLOW requires the UART driver to define .throttle and
.unthrottle methods, neither of which are defined for the 8250 UART
driver (which will result in a NULL ptr dereference). Finally, this patch
supposes to fix existing bugs in the serial core for auto CTS-enabled
hardware, but does not include the class of hardware for which these
bugs exist.

CC: Murali Karicheri <m-karicheri2@ti.com>
CC: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-08 16:21:35 -07:00
..
8250_accent.c
8250_acorn.c
8250_boca.c
8250_core.c Revert "serial: uart: add hw flow control support configuration" 2014-09-08 16:21:35 -07:00
8250_dma.c
8250_dw.c serial: 8250_dw: Add support for deferred probing 2014-07-27 11:07:08 -07:00
8250_early.c tty/serial: fix 8250 early console option passing to regular console 2014-06-19 13:07:26 -07:00
8250_em.c
8250_exar_st16c554.c
8250_fintek.c serial: Add support for Fintek F81216A LPC to 4 UART 2014-09-08 15:26:26 -07:00
8250_fourport.c
8250_fsl.c serial: 8250: introduce up_to_u8250p() helper 2014-07-17 18:16:23 -07:00
8250_gsc.c
8250_hp300.c serial: 8250_hp300: trivial: fix symbol name in #warning message 2014-09-08 16:03:47 -07:00
8250_hub6.c
8250_pci.c serial: 8250: introduce up_to_u8250p() helper 2014-07-17 18:16:23 -07:00
8250_pnp.c
8250.h serial/uart/8250: Add tunable RX interrupt trigger I/F of FIFO buffers 2014-07-17 18:23:35 -07:00
Kconfig serial: Add support for Fintek F81216A LPC to 4 UART 2014-09-08 15:26:26 -07:00
Makefile serial: Add support for Fintek F81216A LPC to 4 UART 2014-09-08 15:26:26 -07:00
serial_cs.c