joel16/android_kernel_sony_msm8994
1
0
Fork 0
mirror of https://github.com/joel16/android_kernel_sony_msm8994.git synced 2024-11-23 12:10:29 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

xen/console: Update console event channel on resume

Browse Source 
commit b9d934f27c91b878c4b2e64299d6e419a4022f8d upstream.

After a resume the hypervisor/tools may change console event
channel number. We should re-query it.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Boris Ostrovsky 2015-04-29 17:10:14 -04:00 committed by Greg Kroah-Hartman
parent 0073e613da
commit 677c040f35
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/tty/hvc/hvc_xen.c
View File

@ -299,11 +299,27 @@ static int xen_initial_domain_console_init(void)
return 0;
}
static void xen_console_update_evtchn(struct xencons_info *info)
{
if (xen_hvm_domain()) {
uint64_t v;
int err;
err = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v);
if (!err && v)
info->evtchn = v;
} else
info->evtchn = xen_start_info->console.domU.evtchn;
}
void xen_console_resume(void)
{
struct xencons_info *info = vtermno_to_xencons(HVC_COOKIE);
if (info != NULL && info->irq)
if (info != NULL && info->irq) {
if (!xen_initial_domain())
xen_console_update_evtchn(info);
rebind_evtchn_irq(info->evtchn, info->irq);
}
}
static void xencons_disconnect_backend(struct xencons_info *info)