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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 13:16:28 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-07 13:16:28 -0800
commit3e5b08cbbf78bedd316904ab0cf3b27119433ee5 (patch)
tree0365745c1b7441c1868551c024410c829c3accc6 /drivers/usb/serial/usb_wwan.c
parentda40d036fd716f0efb2917076220814b1e927ae1 (diff)
parent2af10844eb6ed104f9505bf3a7ba3ceb02264f31 (diff)
downloadop-kernel-dev-3e5b08cbbf78bedd316904ab0cf3b27119433ee5.zip
op-kernel-dev-3e5b08cbbf78bedd316904ab0cf3b27119433ee5.tar.gz
Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (144 commits) USB: add support for Dream Cheeky DL100B Webmail Notifier (1d34:0004) USB: serial: ftdi_sio: add support for TIOCSERGETLSR USB: ehci-mxc: Setup portsc register prior to accessing OTG viewport USB: atmel_usba_udc: fix freeing irq in usba_udc_remove() usb: ehci-omap: fix tll channel enable mask usb: ohci-omap3: fix trivial typo USB: gadget: ci13xxx: don't assume that PAGE_SIZE is 4096 USB: gadget: ci13xxx: fix complete() callback for no_interrupt rq's USB: gadget: update ci13xxx to work with g_ether USB: gadgets: ci13xxx: fix probing of compiled-in gadget drivers Revert "USB: musb: pm: don't rely fully on clock support" Revert "USB: musb: blackfin: pm: make it work" USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path USB: uas: Ensure we only bind to a UAS interface USB: uas: Rename sense pipe and sense urb to status pipe and status urb USB: uas: Use kzalloc instead of kmalloc USB: uas: Fix up the Sense IU usb: musb: core: kill unneeded #include's DA8xx: assign name to MUSB IRQ resource usb: gadget: g_ncm added ... Manually fix up trivial conflicts in USB Kconfig changes in: arch/arm/mach-omap2/Kconfig arch/sh/Kconfig drivers/usb/Kconfig drivers/usb/host/ehci-hcd.c and annoying chip clock data conflicts in: arch/arm/mach-omap2/clock3xxx_data.c arch/arm/mach-omap2/clock44xx_data.c
Diffstat (limited to 'drivers/usb/serial/usb_wwan.c')
-rw-r--r--drivers/usb/serial/usb_wwan.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index fbc9467..b004b2a 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -31,8 +31,10 @@
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/bitops.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
+#include <linux/serial.h>
#include "usb-wwan.h"
static int debug;
@@ -123,6 +125,83 @@ int usb_wwan_tiocmset(struct tty_struct *tty, struct file *file,
}
EXPORT_SYMBOL(usb_wwan_tiocmset);
+static int get_serial_info(struct usb_serial_port *port,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (!retinfo)
+ return -EFAULT;
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.line = port->serial->minor;
+ tmp.port = port->number;
+ tmp.baud_base = tty_get_baud_rate(port->port.tty);
+ tmp.close_delay = port->port.close_delay / 10;
+ tmp.closing_wait = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ ASYNC_CLOSING_WAIT_NONE :
+ port->port.closing_wait / 10;
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int set_serial_info(struct usb_serial_port *port,
+ struct serial_struct __user *newinfo)
+{
+ struct serial_struct new_serial;
+ unsigned int closing_wait, close_delay;
+ int retval = 0;
+
+ if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
+ return -EFAULT;
+
+ close_delay = new_serial.close_delay * 10;
+ closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ ASYNC_CLOSING_WAIT_NONE : new_serial.closing_wait * 10;
+
+ mutex_lock(&port->port.mutex);
+
+ if (!capable(CAP_SYS_ADMIN)) {
+ if ((close_delay != port->port.close_delay) ||
+ (closing_wait != port->port.closing_wait))
+ retval = -EPERM;
+ else
+ retval = -EOPNOTSUPP;
+ } else {
+ port->port.close_delay = close_delay;
+ port->port.closing_wait = closing_wait;
+ }
+
+ mutex_unlock(&port->port.mutex);
+ return retval;
+}
+
+int usb_wwan_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct usb_serial_port *port = tty->driver_data;
+
+ dbg("%s cmd 0x%04x", __func__, cmd);
+
+ switch (cmd) {
+ case TIOCGSERIAL:
+ return get_serial_info(port,
+ (struct serial_struct __user *) arg);
+ case TIOCSSERIAL:
+ return set_serial_info(port,
+ (struct serial_struct __user *) arg);
+ default:
+ break;
+ }
+
+ dbg("%s arg not supported", __func__);
+
+ return -ENOIOCTLCMD;
+}
+EXPORT_SYMBOL(usb_wwan_ioctl);
+
/* Write */
int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
const unsigned char *buf, int count)
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