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Tue, 17 Mar 2020 09:50:50 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 013139D21; Tue, 17 Mar 2020 10:50:50 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1584438659; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bTpbC0hF4n0wMioutkMBf7peWozKB0jLJMnAudSFGwY=; b=Fd16xF7Wz3FveBQs/puHGTEmIxizFRhFbZEncqTb4G9emXI1ZOwWsT9UBJnwJqUiupF4Wx aZjUh8OwjqTIJ6hzJsykpvrdBmWC4qjl40lSMfgiOzWN10l64adh7XjHjBKgKAczxbatN1 SS7KbdPlzAjV1sInvEMXSDQlnYcvByM= X-MC-Unique: 7wGnlxRFO6KDj6MIwrJcfQ-1 From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 1/4] usb-serial: Move USB_TOKEN_IN into a helper function Date: Tue, 17 Mar 2020 10:50:46 +0100 Message-Id: <20200317095049.28486-2-kraxel@redhat.com> In-Reply-To: <20200317095049.28486-1-kraxel@redhat.com> References: <20200317095049.28486-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 216.205.24.74 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Samuel Thibault , Gerd Hoffmann , Jason Andryuk Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Jason Andryuk We'll be adding a loop, so move the code into a helper function. breaks are replaced with returns. While making this change, add braces to single line if statements to comply with coding style and keep checkpatch happy. Signed-off-by: Jason Andryuk Message-id: 20200316174610.115820-2-jandryuk@gmail.com Signed-off-by: Gerd Hoffmann --- hw/usb/dev-serial.c | 80 ++++++++++++++++++++++++++------------------- 1 file changed, 46 insertions(+), 34 deletions(-) diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c index daac75b7aec2..d807ce577110 100644 --- a/hw/usb/dev-serial.c +++ b/hw/usb/dev-serial.c @@ -358,13 +358,56 @@ static void usb_serial_handle_control(USBDevice *dev,= USBPacket *p, } } =20 +static void usb_serial_token_in(USBSerialState *s, USBPacket *p) +{ + int first_len, len; + uint8_t header[2]; + + first_len =3D RECV_BUF - s->recv_ptr; + len =3D p->iov.size; + if (len <=3D 2) { + p->status =3D USB_RET_NAK; + return; + } + header[0] =3D usb_get_modem_lines(s) | 1; + /* We do not have the uart details */ + /* handle serial break */ + if (s->event_trigger && s->event_trigger & FTDI_BI) { + s->event_trigger &=3D ~FTDI_BI; + header[1] =3D FTDI_BI; + usb_packet_copy(p, header, 2); + return; + } else { + header[1] =3D 0; + } + len -=3D 2; + if (len > s->recv_used) { + len =3D s->recv_used; + } + if (!len) { + p->status =3D USB_RET_NAK; + return; + } + if (first_len > len) { + first_len =3D len; + } + usb_packet_copy(p, header, 2); + usb_packet_copy(p, s->recv_buf + s->recv_ptr, first_len); + if (len > first_len) { + usb_packet_copy(p, s->recv_buf, len - first_len); + } + s->recv_used -=3D len; + s->recv_ptr =3D (s->recv_ptr + len) % RECV_BUF; + + return; +} + static void usb_serial_handle_data(USBDevice *dev, USBPacket *p) { USBSerialState *s =3D (USBSerialState *)dev; uint8_t devep =3D p->ep->nr; struct iovec *iov; - uint8_t header[2]; - int i, first_len, len; + int i; =20 switch (p->pid) { case USB_TOKEN_OUT: @@ -382,38 +425,7 @@ static void usb_serial_handle_data(USBDevice *dev, USB= Packet *p) case USB_TOKEN_IN: if (devep !=3D 1) goto fail; - first_len =3D RECV_BUF - s->recv_ptr; - len =3D p->iov.size; - if (len <=3D 2) { - p->status =3D USB_RET_NAK; - break; - } - header[0] =3D usb_get_modem_lines(s) | 1; - /* We do not have the uart details */ - /* handle serial break */ - if (s->event_trigger && s->event_trigger & FTDI_BI) { - s->event_trigger &=3D ~FTDI_BI; - header[1] =3D FTDI_BI; - usb_packet_copy(p, header, 2); - break; - } else { - header[1] =3D 0; - } - len -=3D 2; - if (len > s->recv_used) - len =3D s->recv_used; - if (!len) { - p->status =3D USB_RET_NAK; - break; - } - if (first_len > len) - first_len =3D len; - usb_packet_copy(p, header, 2); - usb_packet_copy(p, s->recv_buf + s->recv_ptr, first_len); - if (len > first_len) - usb_packet_copy(p, s->recv_buf, len - first_len); - s->recv_used -=3D len; - s->recv_ptr =3D (s->recv_ptr + len) % RECV_BUF; + usb_serial_token_in(s, p); break; =20 default: --=20 2.18.2