linux/drivers/tty/hvc
Nicholas Piggin 7f2bf7840b tty: hvc: hvc_write() fix break condition
Commit 550ddadcc7 ("tty: hvc: hvc_write() may sleep") broke the
termination condition in case the driver stops accepting characters.
This can result in unnecessary polling of the busy driver.

Restore it by testing the hvc_push return code.

Tested-by: Matteo Croce <mcroce@redhat.com>
Tested-by: Jason Gunthorpe <jgg@mellanox.com>
Tested-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-10 18:04:31 +02:00
..
Kconfig TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
Makefile TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
hvc_console.c tty: hvc: hvc_write() fix break condition 2018-09-10 18:04:31 +02:00
hvc_console.h tty: hvc: introduce the hv_ops.flush operation for hvc drivers 2018-07-23 20:13:20 +10:00
hvc_dcc.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvc_irq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hvc_iucv.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
hvc_opal.c powerpc/powernv: provide a console flush operation for opal hvc driver 2018-08-20 20:19:54 +10:00
hvc_riscv_sbi.c tty: New RISC-V SBI console driver 2018-03-09 10:19:28 -08:00
hvc_rtas.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvc_udbg.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvc_vio.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvc_xen.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvcs.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
hvsi.c tty: hvc: Remove redundant license text 2017-11-08 13:08:12 +01:00
hvsi_lib.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00