linux-apfs

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Paul Mackerras c019bc119a TTY: hvc_console, fix port reference count going to zero prematurely

Commit bdb498c200 "TTY: hvc_console, add tty install" took the port
refcounting out of hvc_open()/hvc_close(), but failed to remove the
kref_put() and tty_kref_put() calls in hvc_hangup() that were there to
remove the extra references that hvc_open() had taken.

The result was that doing a vhangup() when the current terminal was
a hvc_console, then closing the current terminal, would end up calling
destroy_hvc_struct() and making the port disappear entirely.  This
meant that Fedora 17 systems would boot up but then not display the
login prompt on the console, and attempts to open /dev/hvc0 would
give a "No such device" error.

This fixes it by removing the extra kref_put() and tty_kref_put() calls.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-11-14 12:27:29 -08:00

hvc_beat.c

serial: Kill off NO_IRQ

2012-01-26 17:14:50 -08:00

hvc_bfin_jtag.c

hvc: add Blackfin JTAG console support

2011-02-17 11:12:40 -08:00

hvc_console.c

TTY: hvc_console, fix port reference count going to zero prematurely

2012-11-14 12:27:29 -08:00

hvc_console.h

TTY: HVC, use count from tty_port