From: Tal Shorer <tal.shorer@gmail.com>
To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-usb@vger.kernel.org, gregkh@linuxfoundation.org,
balbi@kernel.org, corbet@lwn.net
Cc: Tal Shorer <tal.shorer@gmail.com>
Subject: [PATCH v2 4/8] usb: gadget: u_serial: propagate ioctl() to the next layer
Date: Tue, 13 Jun 2017 09:52:10 +0300 [thread overview]
Message-ID: <1497336734-19368-5-git-send-email-tal.shorer@gmail.com> (raw)
In-Reply-To: <1497336734-19368-1-git-send-email-tal.shorer@gmail.com>
In order for a serial function to implement its own ioctl() calls,
propagate the ioctl() callback to the next layer so it can handle it if
it sees fit to do so.
Signed-off-by: Tal Shorer <tal.shorer@gmail.com>
---
drivers/usb/gadget/function/u_serial.c | 15 +++++++++++++++
drivers/usb/gadget/function/u_serial.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/drivers/usb/gadget/function/u_serial.c b/drivers/usb/gadget/function/u_serial.c
index d466f58..8d9abf1 100644
--- a/drivers/usb/gadget/function/u_serial.c
+++ b/drivers/usb/gadget/function/u_serial.c
@@ -1040,6 +1040,20 @@ static unsigned int gs_poll(struct tty_struct *tty, struct file *file,
return mask;
}
+static int gs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
+{
+ struct gs_port *port = tty->driver_data;
+ struct gserial *gser;
+ int ret = -ENOIOCTLCMD;
+
+ spin_lock_irq(&port->port_lock);
+ gser = port->port_usb;
+ if (gser && gser->ioctl)
+ ret = gser->ioctl(gser, cmd, arg);
+ spin_unlock_irq(&port->port_lock);
+ return ret;
+}
+
static const struct tty_operations gs_tty_ops = {
.open = gs_open,
.close = gs_close,
@@ -1051,6 +1065,7 @@ static const struct tty_operations gs_tty_ops = {
.unthrottle = gs_unthrottle,
.break_ctl = gs_break_ctl,
.poll = gs_poll,
+ .ioctl = gs_ioctl,
};
/*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/gadget/function/u_serial.h b/drivers/usb/gadget/function/u_serial.h
index ce00840..8d0901e 100644
--- a/drivers/usb/gadget/function/u_serial.h
+++ b/drivers/usb/gadget/function/u_serial.h
@@ -53,6 +53,7 @@ struct gserial {
int (*send_break)(struct gserial *p, int duration);
unsigned int (*poll)(struct gserial *p, struct file *file,
poll_table *wait);
+ int (*ioctl)(struct gserial *p, unsigned int cmd, unsigned long arg);
};
/* utilities to allocate/free request and buffer */
--
2.7.4
next prev parent reply other threads:[~2017-06-13 6:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-13 6:52 [PATCH v2 0/8] Allow f_acm gadgets to notify the user about SetLineCoding requests Tal Shorer
2017-06-13 6:52 ` [PATCH v2 1/8] tty: add a poll() callback in struct tty_operations Tal Shorer
2017-06-14 1:15 ` Alan Cox
2017-06-14 8:20 ` Tal Shorer
2017-06-14 8:27 ` Tal Shorer
2017-06-14 13:33 ` Alan Cox
2017-06-15 14:44 ` Tal Shorer
2017-06-13 6:52 ` [PATCH v2 2/8] usb: gadget: u_serial: propagate poll() to the next layer Tal Shorer
2017-06-13 6:52 ` [PATCH v2 3/8] usb: gadget: f_acm: validate set_line_coding requests Tal Shorer
2017-06-13 6:52 ` Tal Shorer [this message]
2017-06-13 6:52 ` [PATCH v2 5/8] usb: gadget: f_acm: initialize port_line_coding when creating an instance Tal Shorer
2017-06-13 6:52 ` [PATCH v2 6/8] usb: gadget: f_acm: add an ioctl to get the current line coding Tal Shorer
2017-06-13 9:19 ` Greg KH
2017-06-13 9:24 ` Tal Shorer
2017-06-13 6:52 ` [PATCH v2 7/8] usb: gadget: f_acm: notify the user on SetLineCoding Tal Shorer
2017-06-13 6:52 ` [PATCH v2 8/8] usb: gadget: u_serial: remove port_line_config from struct gserial Tal Shorer
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