https://github.com/torvalds/linux
Revision ce3b642d42f36406112ab474c03d81c5941d9398 authored by Jeff Dike on 01 December 2007, 20:16:30 UTC, committed by Linus Torvalds on 03 December 2007, 16:13:17 UTC
Under the conditions that UML uses it, tcgetattr is guaranteed to return
-EINTR when the console is attached to /dev/ptmx, making generic_console_write
hang because it loops, calling tcgetattr until it succeeds.  This is a host
bug - see http://marc.info/?l=linux-kernel&m=119618990807182&w=2 for the
details.

This patch works around it by blocking SIGIO while the terminal attributes are
being fiddled.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 0a76532
History
Tip revision: ce3b642d42f36406112ab474c03d81c5941d9398 authored by Jeff Dike on 01 December 2007, 20:16:30 UTC
uml: work around host tcsetattr bug
Tip revision: ce3b642
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.gitignore -rw-r--r-- 628 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 90.1 KB
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MAINTAINERS -rw-r--r-- 91.9 KB
Makefile -rw-r--r-- 52.0 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.0 KB

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