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os/inputthread: Ensure pollfd refreshing

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When putting a device node into a poll-request list, do not overwrite a
"please-remove" element with the same fd, so that a closed device file
is ospoll_remove'd prior to being ospoll_add'ed.

Before, the opposite order was possible, resulting in ospoll_add
considering the newly opened file being already polled, should it have a
fd for which the "please-remove" has not been procesed yet. In this
case, no further events would be seen from the device.

Signed-off-by: Mihail Konev <k.mvc@ya.ru>
Regressed-in: 52d6a1e832
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97880
Patchwork: https://patchwork.freedesktop.org/patch/113763/
Hit-and-Reduced-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-and-Reduced-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Mihail Konev 2016-10-15 17:59:05 +00:00 committed by Keith Packard
parent 9cf0bd4d45
commit 5dcb0666b8
1 changed files with 4 additions and 1 deletions
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5
os/inputthread.c
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@ -197,7 +197,7 @@ InputThreadRegisterDev(int fd,
dev = NULL;
xorg_list_for_each_entry(old, &inputThreadInfo->devs, node) {
if (old->fd == fd) {
if (old->fd == fd && old->state != device_state_removed) {
dev = old;
break;
}
@ -218,6 +218,9 @@ InputThreadRegisterDev(int fd,
dev->readInputProc = readInputProc;
dev->readInputArgs = readInputArgs;
dev->state = device_state_added;
/* Do not prepend, so that any dev->state == device_state_removed
* with the same dev->fd get processed first. */
xorg_list_append(&dev->node, &inputThreadInfo->devs);
}