This is necessary because after VM is pause/resumed, some portion of
the screen may need refresh.
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
Reviewed-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
---
drivers/video/hyperv_fb.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
diff --git a/drivers/video/hyperv_fb.c b/drivers/video/hyperv_fb.c
index 130708f..bbcc8c0 100644
--- a/drivers/video/hyperv_fb.c
+++ b/drivers/video/hyperv_fb.c
@@ -218,6 +218,7 @@ struct hvfb_par {
struct delayed_work dwork;
bool update;
+ bool xrefresh;
u32 pseudo_palette[16];
u8 init_buf[MAX_VMBUS_PKT_SIZE];
@@ -369,7 +370,7 @@ static void synthvid_recv_sub(struct hv_device *hdev)
synthvid_send_situ(hdev);
}
- par->update = msg->feature_chg.is_dirt_needed;
+ par->xrefresh = par->update = msg->feature_chg.is_dirt_needed;
if (par->update)
schedule_delayed_work(&par->dwork, HVFB_UPDATE_DELAY);
}
@@ -522,6 +523,13 @@ static void hvfb_update_work(struct work_struct *w)
{
struct hvfb_par *par = container_of(w, struct hvfb_par, dwork.work);
struct fb_info *info = par->info;
+ char *argv[] = {"/usr/bin/xrefresh", "-display", ":0.0", NULL};
+ char *envp[] = {"HOME=/", "PATH=/sbin:/usr/sbin:/bin:/usr/bin", NULL };
+
+ if (par->xrefresh) {
+ par->xrefresh = false;
+ call_usermodehelper(argv[0], argv, envp, UMH_NO_WAIT);
+ }
if (par->fb_ready)
synthvid_update(info);
--
1.7.4.1
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