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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> |
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| drivers | ||
| include | ||
| kernel | ||
| os-Linux | ||
| scripts | ||
| sys-i386 | ||
| sys-ia64 | ||
| sys-ppc | ||
| sys-x86_64 | ||
| defconfig | ||
| Kconfig | ||
| Kconfig.char | ||
| Kconfig.debug | ||
| Kconfig.i386 | ||
| Kconfig.net | ||
| Kconfig.x86_64 | ||
| Makefile | ||
| Makefile-i386 | ||
| Makefile-ia64 | ||
| Makefile-os-Linux | ||
| Makefile-ppc | ||
| Makefile-skas | ||
| Makefile-tt | ||
| Makefile-x86_64 | ||