From: Amit Shah Date: Mon, 14 Mar 2011 12:15:48 +0000 (+0530) Subject: virtio: console: Enable call to hvc_remove() on console port remove X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=afa2689e19073cd2e762d0f2c1358fab1ab9f18c;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git virtio: console: Enable call to hvc_remove() on console port remove This call was disabled as hot-unplugging one virtconsole port led to another virtconsole port freezing. Upon testing it again, this now works, so enable it. In addition, a bug was found in qemu wherein removing a port of one type caused the guest output from another port to stop working. I doubt it was just this bug that caused it (since disabling the hvc_remove() call did allow other ports to continue working), but since it's all solved now, we're fine with hot-unplugging of virtconsole ports. Signed-off-by: Amit Shah Signed-off-by: Rusty Russell --- diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 84b164d1eb2..838568a7dbf 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1280,18 +1280,7 @@ static void unplug_port(struct port *port) spin_lock_irq(&pdrvdata_lock); list_del(&port->cons.list); spin_unlock_irq(&pdrvdata_lock); -#if 0 - /* - * hvc_remove() not called as removing one hvc port - * results in other hvc ports getting frozen. - * - * Once this is resolved in hvc, this functionality - * will be enabled. Till that is done, the -EPIPE - * return from get_chars() above will help - * hvc_console.c to clean up on ports we remove here. - */ hvc_remove(port->cons.hvc); -#endif } /* Remove unused data this port might have received. */