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authorZongmin Zhou <zhouzongmin@kylinos.cn>2022-05-17 21:50:03 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2022-05-18 15:02:13 -0700
commitc853246539f37936f20a38c12e55d54fe72f1c2a (patch)
treebfe7127e3358749f6daabd5729f6c35ac69213c7 /drivers/input
parent1b3ce51dde3652960ba74e20d1990e5c23d25105 (diff)
downloadlinux-c853246539f37936f20a38c12e55d54fe72f1c2a.tar.bz2
Input: vmmouse - disable vmmouse before entering suspend mode
Currently, when trying to suspend and resume with VirtualPS/2 VMMouse there is an error message after resuming: psmouse serio1: vmmouse: Unable to re-enable mouse when reconnecting, err: -6 and the mouse will no longer be operable, requiring full rescan to find a another driver to use for the port. This error is due to QEMU still generating PS2 events which the kernel is not consuming until resume time, where they interfere with mouse identification and ultimately resulting in an error getting VMMOUSE_VERSION_ID. Test scenario: 1) start virtual machine with qemu command "vmport=on" 2) click suspend botton to enter suspend mode 3) resume and observe the error message in the kernel logs Let's fix this by disabling the vmmouse in its reset handler. This will notify qemu to stop vmmouse and remove the handler. Signed-off-by: Zongmin Zhou<zhouzongmin@kylinos.cn> Reviewed-by: Zack Rusin <zackr@vmware.com> Link: https://lore.kernel.org/r/20220322021046.1087954-1-zhouzongmin@kylinos.cn Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/mouse/vmmouse.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/input/mouse/vmmouse.c b/drivers/input/mouse/vmmouse.c
index 42443ffba7c4..ea9eff7c8099 100644
--- a/drivers/input/mouse/vmmouse.c
+++ b/drivers/input/mouse/vmmouse.c
@@ -366,6 +366,19 @@ int vmmouse_detect(struct psmouse *psmouse, bool set_properties)
}
/**
+ * vmmouse_reset - Disable vmmouse and reset
+ *
+ * @psmouse: Pointer to the psmouse struct
+ *
+ * Tries to disable vmmouse mode before enter suspend.
+ */
+static void vmmouse_reset(struct psmouse *psmouse)
+{
+ vmmouse_disable(psmouse);
+ psmouse_reset(psmouse);
+}
+
+/**
* vmmouse_disconnect - Take down vmmouse driver
*
* @psmouse: Pointer to the psmouse struct
@@ -472,6 +485,7 @@ int vmmouse_init(struct psmouse *psmouse)
psmouse->protocol_handler = vmmouse_process_byte;
psmouse->disconnect = vmmouse_disconnect;
psmouse->reconnect = vmmouse_reconnect;
+ psmouse->cleanup = vmmouse_reset;
return 0;