Attachment 678708 Details for Bug 895491 – 0110-usb-redir-Add-flow-control-support.patch

[patch] 0110-usb-redir-Add-flow-control-support.patch

0110-usb-redir-Add-flow-control-support.patch (text/plain), 1.94 KB, created by Hans de Goede on 2013-01-15 10:42:08 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Hans de Goede

Created: 2013-01-15 10:42:08 UTC

Size: 1.94 KB

patch

obsolete

>From 4e6a76dd0e35b00e9592a53afc8cffac4cc35951 Mon Sep 17 00:00:00 2001
>Message-Id: <4e6a76dd0e35b00e9592a53afc8cffac4cc35951.1354903384.git.crobinso@redhat.com>
>In-Reply-To: <9f0944a25bc1094fa7a74ac9df14e184e2c5c82d.1354903384.git.crobinso@redhat.com>
>References: <9f0944a25bc1094fa7a74ac9df14e184e2c5c82d.1354903384.git.crobinso@redhat.com>
>From: Hans de Goede <hdegoede@redhat.com>
>Date: Tue, 19 Jul 2011 10:56:19 +0200
>Subject: [PATCH] usb-redir: Add flow control support
>
>Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>Signed-off-by: Cole Robinson <crobinso@redhat.com>
>---
> hw/usb/redirect.c | 22 ++++++++++++++++++++--
> 1 file changed, 20 insertions(+), 2 deletions(-)
>
>diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
>index c921d2d..dfb1773 100644
>--- a/hw/usb/redirect.c
>+++ b/hw/usb/redirect.c
>@@ -239,8 +239,9 @@ static int usbredir_read(void *priv, uint8_t *data, int count)
> static int usbredir_write(void *priv, uint8_t *data, int count)
> {
>     USBRedirDevice *dev = priv;
>+    int r;
> 
>-    if (!dev->cs->opened) {
>+    if (!dev->cs->opened || dev->cs->write_blocked) {
>         return 0;
>     }
> 
>@@ -249,7 +250,16 @@ static int usbredir_write(void *priv, uint8_t *data, int count)
>         return 0;
>     }
> 
>-    return qemu_chr_fe_write(dev->cs, data, count);
>+    r = qemu_chr_fe_write(dev->cs, data, count);
>+
>+    if (r < 0) {
>+        if (dev->cs->write_blocked) {
>+           return 0;
>+        }
>+        return -1;
>+    }
>+
>+    return r;
> }
> 
> /*
>@@ -1037,10 +1047,18 @@ static void usbredir_chardev_event(void *opaque, int event)
>     }
> }
> 
>+static void usbredir_chardev_write_unblocked(void *opaque)
>+{
>+    USBRedirDevice *dev = opaque;
>+
>+    usbredirparser_do_write(dev->parser);
>+}
>+
> static const QemuChrHandlers usbredir_chr_handlers = {
>     .fd_can_read = usbredir_chardev_can_read,
>     .fd_read = usbredir_chardev_read,
>     .fd_event = usbredir_chardev_event,
>+    .fd_write_unblocked = usbredir_chardev_write_unblocked,
> };
> 
> /*
>-- 
>1.8.0
>

Actions: View | Diff

Attachments on bug 895491: 678708