On 27/01/17 08:21, Oleksandr Andrushchenko wrote:

On 01/27/2017 09:12 AM, Juergen Gross wrote:

quoted

Instead of using the default resolution of 800*600 for the pointing
device of xen-kbdfront try to read the resolution of the (virtual)
framebuffer device. Use the default as fallback only.

Signed-off-by: Juergen Gross <jgross@suse.com>
---
V2: get framebuffer resolution only if CONFIG_FB (Dmitry Torokhov)
---
  drivers/input/misc/xen-kbdfront.c | 15 ++++++++++++---
  1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/input/misc/xen-kbdfront.c

b/drivers/input/misc/xen-kbdfront.c
index 3900875..3aae9b4 100644

--- a/drivers/input/misc/xen-kbdfront.c
+++ b/drivers/input/misc/xen-kbdfront.c

@@ -16,6 +16,7 @@
  #include <linux/kernel.h>
  #include <linux/errno.h>
  #include <linux/module.h>
+#include <linux/fb.h>
  #include <linux/input.h>
  #include <linux/slab.h>
  @@ -108,7 +109,7 @@ static irqreturn_t input_handler(int rq, void

*dev_id)
  static int xenkbd_probe(struct xenbus_device *dev,
                    const struct xenbus_device_id *id)
  {
-    int ret, i;
+    int ret, i, width, height;
      unsigned int abs;
      struct xenkbd_info *info;
      struct input_dev *kbd, *ptr;

@@ -173,9 +174,17 @@ static int xenkbd_probe(struct xenbus_device *dev,
      ptr->id.product = 0xfffe;
        if (abs) {
+        width = XENFB_WIDTH;
+        height = XENFB_HEIGHT;
+#ifdef CONFIG_FB
+        if (registered_fb[0]) {

This still will not help if FB gets registered after kbd+ptr

Hmm, so you think I should add a call to fb_register_client() to get
events for new registered framebuffer devices?

This would probably work. I'll have a try.


Thanks,

Juergen

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