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author | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-16 19:05:06 +0100 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-16 19:05:06 +0100 |
commit | 36facadd9ea98f8415d0dbb63e0763b7ee9d3911 (patch) | |
tree | 99dea00b332ed852f2b0a4923b581dd723f03634 /drivers/usb/serial/usb_wwan.c | |
parent | Revert "USB: musb: pm: don't rely fully on clock support" (diff) | |
parent | USB: uas: Use GFP_NOIO instead of GFP_KERNEL in I/O submission path (diff) | |
download | linux-36facadd9ea98f8415d0dbb63e0763b7ee9d3911.tar.xz linux-36facadd9ea98f8415d0dbb63e0763b7ee9d3911.zip |
Merge branch 'usb-next' into musb-merge
* usb-next: (132 commits)
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
usb: gadget: f_ncm.c added
usb: gadget: u_ether: prepare for NCM
usb: pch_udc: Fix setup transfers with data out
usb: pch_udc: Fix compile error, warnings and checkpatch warnings
usb: add ab8500 usb transceiver driver
USB: gadget: Implement runtime PM for MSM bus glue driver
USB: gadget: Implement runtime PM for ci13xxx gadget
USB: gadget: Add USB controller driver for MSM SoC
USB: gadget: Introduce ci13xxx_udc_driver struct
USB: gadget: Initialize ci13xxx gadget device's coherent DMA mask
USB: gadget: Fix "scheduling while atomic" bugs in ci13xxx_udc
USB: gadget: Separate out PCI bus code from ci13xxx_udc
...
Diffstat (limited to 'drivers/usb/serial/usb_wwan.c')
-rw-r--r-- | drivers/usb/serial/usb_wwan.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index fbc946797801..b004b2a485c3 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) |