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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-19 16:40:03 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-19 16:40:03 -0400
commit8dba8f949492cf2ffb32c1c2fbfe12c3f53b1866 (patch)
treeeb91a9a4f3ab0f71ca388fd17cb7dd9e03adb9f4 /drivers/char/vt_ioctl.c
parent2eb645e7b5662da47646f76b41b4141f2c9bf13a (diff)
parent336cee42dd52824e360ab419eab4e8888eb054ec (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: tty_port,usb-console: Fix usb serial console open/close regression tty: cpm_uart: use resource_size() tty_buffer: Fix distinct type warning hvc_console: Fix race between hvc_close and hvc_remove uartlite: Fix build on sparc. tty: Take a 256 byte padding into account when buffering below sub-page units Revert "tty: Add a new VT mode which is like VT_PROCESS but doesn't require a VT_RELDISP ioctl call"
Diffstat (limited to 'drivers/char/vt_ioctl.c')
-rw-r--r--drivers/char/vt_ioctl.c39
1 files changed, 19 insertions, 20 deletions
diff --git a/drivers/char/vt_ioctl.c b/drivers/char/vt_ioctl.c
index 87778dcf8727..6aa10284104a 100644
--- a/drivers/char/vt_ioctl.c
+++ b/drivers/char/vt_ioctl.c
@@ -888,7 +888,7 @@ int vt_ioctl(struct tty_struct *tty, struct file * file,
888 ret = -EFAULT; 888 ret = -EFAULT;
889 goto out; 889 goto out;
890 } 890 }
891 if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS && tmp.mode != VT_PROCESS_AUTO) { 891 if (tmp.mode != VT_AUTO && tmp.mode != VT_PROCESS) {
892 ret = -EINVAL; 892 ret = -EINVAL;
893 goto out; 893 goto out;
894 } 894 }
@@ -1622,7 +1622,7 @@ static void complete_change_console(struct vc_data *vc)
1622 * telling it that it has acquired. Also check if it has died and 1622 * telling it that it has acquired. Also check if it has died and
1623 * clean up (similar to logic employed in change_console()) 1623 * clean up (similar to logic employed in change_console())
1624 */ 1624 */
1625 if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) { 1625 if (vc->vt_mode.mode == VT_PROCESS) {
1626 /* 1626 /*
1627 * Send the signal as privileged - kill_pid() will 1627 * Send the signal as privileged - kill_pid() will
1628 * tell us if the process has gone or something else 1628 * tell us if the process has gone or something else
@@ -1682,7 +1682,7 @@ void change_console(struct vc_data *new_vc)
1682 * vt to auto control. 1682 * vt to auto control.
1683 */ 1683 */
1684 vc = vc_cons[fg_console].d; 1684 vc = vc_cons[fg_console].d;
1685 if (vc->vt_mode.mode == VT_PROCESS || vc->vt_mode.mode == VT_PROCESS_AUTO) { 1685 if (vc->vt_mode.mode == VT_PROCESS) {
1686 /* 1686 /*
1687 * Send the signal as privileged - kill_pid() will 1687 * Send the signal as privileged - kill_pid() will
1688 * tell us if the process has gone or something else 1688 * tell us if the process has gone or something else
@@ -1693,28 +1693,27 @@ void change_console(struct vc_data *new_vc)
1693 */ 1693 */
1694 vc->vt_newvt = new_vc->vc_num; 1694 vc->vt_newvt = new_vc->vc_num;
1695 if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) { 1695 if (kill_pid(vc->vt_pid, vc->vt_mode.relsig, 1) == 0) {
1696 if(vc->vt_mode.mode == VT_PROCESS)
1697 /*
1698 * It worked. Mark the vt to switch to and
1699 * return. The process needs to send us a
1700 * VT_RELDISP ioctl to complete the switch.
1701 */
1702 return;
1703 } else {
1704 /* 1696 /*
1705 * The controlling process has died, so we revert back to 1697 * It worked. Mark the vt to switch to and
1706 * normal operation. In this case, we'll also change back 1698 * return. The process needs to send us a
1707 * to KD_TEXT mode. I'm not sure if this is strictly correct 1699 * VT_RELDISP ioctl to complete the switch.
1708 * but it saves the agony when the X server dies and the screen
1709 * remains blanked due to KD_GRAPHICS! It would be nice to do
1710 * this outside of VT_PROCESS but there is no single process
1711 * to account for and tracking tty count may be undesirable.
1712 */ 1700 */
1713 reset_vc(vc); 1701 return;
1714 } 1702 }
1715 1703
1716 /* 1704 /*
1717 * Fall through to normal (VT_AUTO and VT_PROCESS_AUTO) handling of the switch... 1705 * The controlling process has died, so we revert back to
1706 * normal operation. In this case, we'll also change back
1707 * to KD_TEXT mode. I'm not sure if this is strictly correct
1708 * but it saves the agony when the X server dies and the screen
1709 * remains blanked due to KD_GRAPHICS! It would be nice to do
1710 * this outside of VT_PROCESS but there is no single process
1711 * to account for and tracking tty count may be undesirable.
1712 */
1713 reset_vc(vc);
1714
1715 /*
1716 * Fall through to normal (VT_AUTO) handling of the switch...
1718 */ 1717 */
1719 } 1718 }
1720 1719