diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 11:26:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-20 11:26:30 -0700 |
| commit | ed378a52dabf77b406b447fd3238f83ea24b71fa (patch) | |
| tree | 07e1a7ec2d1c08767ee81b9910f5912b80502632 /drivers/usb/class/cdc-acm.c | |
| parent | 843ec558f91b8e8fdb6efc908f2c0506407cc750 (diff) | |
| parent | 11207b6fe05438b2e87a26435cd98db3d55e6fa7 (diff) | |
Merge tag 'usb-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB merge for 3.4-rc1 from Greg KH:
"Here's the big USB merge for the 3.4-rc1 merge window.
Lots of gadget driver reworks here, driver updates, xhci changes, some
new drivers added, usb-serial core reworking to fix some bugs, and
other various minor things.
There are some patches touching arch code, but they have all been
acked by the various arch maintainers."
* tag 'usb-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (302 commits)
net: qmi_wwan: add support for ZTE MF820D
USB: option: add ZTE MF820D
usb: gadget: f_fs: Remove lock is held before freeing checks
USB: option: make interface blacklist work again
usb/ub: deprecate & schedule for removal the "Low Performance USB Block" driver
USB: ohci-pxa27x: add clk_prepare/clk_unprepare calls
USB: use generic platform driver on ath79
USB: EHCI: Add a generic platform device driver
USB: OHCI: Add a generic platform device driver
USB: ftdi_sio: new PID: LUMEL PD12
USB: ftdi_sio: add support for FT-X series devices
USB: serial: mos7840: Fixed MCS7820 device attach problem
usb: Don't make USB_ARCH_HAS_{XHCI,OHCI,EHCI} depend on USB_SUPPORT.
usb gadget: fix a section mismatch when compiling g_ffs with CONFIG_USB_FUNCTIONFS_ETH
USB: ohci-nxp: Remove i2c_write(), use smbus
USB: ohci-nxp: Support for LPC32xx
USB: ohci-nxp: Rename symbols from pnx4008 to nxp
USB: OHCI-HCD: Rename ohci-pnx4008 to ohci-nxp
usb: gadget: Kconfig: fix typo for 'different'
usb: dwc3: pci: fix another failure path in dwc3_pci_probe()
...
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 6bb8472155c6..b32ccb461019 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -39,6 +39,7 @@ #include <linux/serial.h> #include <linux/tty_driver.h> #include <linux/tty_flip.h> +#include <linux/serial.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/uaccess.h> @@ -768,10 +769,37 @@ static int acm_tty_tiocmset(struct tty_struct *tty, return acm_set_control(acm, acm->ctrlout = newctrl); } +static int get_serial_info(struct acm *acm, struct serial_struct __user *info) +{ + struct serial_struct tmp; + + if (!info) + return -EINVAL; + + memset(&tmp, 0, sizeof(tmp)); + tmp.flags = ASYNC_LOW_LATENCY; + tmp.xmit_fifo_size = acm->writesize; + tmp.baud_base = le32_to_cpu(acm->line.dwDTERate); + + if (copy_to_user(info, &tmp, sizeof(tmp))) + return -EFAULT; + else + return 0; +} + static int acm_tty_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { - return -ENOIOCTLCMD; + struct acm *acm = tty->driver_data; + int rv = -ENOIOCTLCMD; + + switch (cmd) { + case TIOCGSERIAL: /* gets serial port data */ + rv = get_serial_info(acm, (struct serial_struct __user *) arg); + break; + } + + return rv; } static const __u32 acm_tty_speed[] = { |