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Merge tag 'usb-serial-4.12-rc2' of git://git.kernel.org/pub/scm/linux…
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…/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.12-rc2

Here's a fix for a long-standing issue in the ftdi_sio driver that
prevented unprivileged users from updating the low-latency flag,
something which became apparent after a recent change that restored the
older setting of not using low-latency mode by default.

A run of sparse revealed a couple of endianness issues that are now
fixed, and addressed is also a user-triggerable division-by-zero in
io_ti when debugging is enabled.

Finally there are some new device ids, including a simplification of how
we deal with a couple of older Olimex JTAG adapters.

All have been in linux-next with no reported issues.

Signed-off-by: Johan Hovold <[email protected]>
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@gregkh
gregkh committed May 19, 2017
2 parents 6df2b42 + 8d7a10d commit b51e0ce
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Showing 7 changed files with 34 additions and 16 deletions.
10 changes: 5 additions & 5 deletions drivers/usb/serial/ftdi_sio.c
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Original file line number Diff line number Diff line change
Expand Up @@ -809,10 +809,10 @@ static const struct usb_device_id id_table_combined[] = {
{ USB_DEVICE(FTDI_VID, FTDI_PROPOX_ISPCABLEIII_PID) },
{ USB_DEVICE(FTDI_VID, CYBER_CORTEX_AV_PID),
.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
{ USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID),
.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
{ USB_DEVICE(OLIMEX_VID, OLIMEX_ARM_USB_OCD_H_PID),
.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
{ USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_OCD_PID, 1) },
{ USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_OCD_H_PID, 1) },
{ USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_TINY_PID, 1) },
{ USB_DEVICE_INTERFACE_NUMBER(OLIMEX_VID, OLIMEX_ARM_USB_TINY_H_PID, 1) },
{ USB_DEVICE(FIC_VID, FIC_NEO1973_DEBUG_PID),
.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
{ USB_DEVICE(FTDI_VID, FTDI_OOCDLINK_PID),
Expand Down Expand Up @@ -1527,9 +1527,9 @@ static int set_serial_info(struct tty_struct *tty,
(new_serial.flags & ASYNC_FLAGS));
priv->custom_divisor = new_serial.custom_divisor;

check_and_exit:
write_latency_timer(port);

check_and_exit:
if ((old_priv.flags & ASYNC_SPD_MASK) !=
(priv->flags & ASYNC_SPD_MASK)) {
if ((priv->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Expand Down
2 changes: 2 additions & 0 deletions drivers/usb/serial/ftdi_sio_ids.h
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Original file line number Diff line number Diff line change
Expand Up @@ -882,6 +882,8 @@
/* Olimex */
#define OLIMEX_VID 0x15BA
#define OLIMEX_ARM_USB_OCD_PID 0x0003
#define OLIMEX_ARM_USB_TINY_PID 0x0004
#define OLIMEX_ARM_USB_TINY_H_PID 0x002a
#define OLIMEX_ARM_USB_OCD_H_PID 0x002b

/*
Expand Down
5 changes: 4 additions & 1 deletion drivers/usb/serial/io_ti.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2336,8 +2336,11 @@ static void change_port_settings(struct tty_struct *tty,
if (!baud) {
/* pick a default, any default... */
baud = 9600;
} else
} else {
/* Avoid a zero divisor. */
baud = min(baud, 461550);
tty_encode_baud_rate(tty, baud, baud);
}

edge_port->baud_rate = baud;
config->wBaudRate = (__u16)((461550L + baud/2) / baud);
Expand Down
21 changes: 12 additions & 9 deletions drivers/usb/serial/ir-usb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -197,6 +197,7 @@ static u8 ir_xbof_change(u8 xbof)
static int ir_startup(struct usb_serial *serial)
{
struct usb_irda_cs_descriptor *irda_desc;
int rates;

irda_desc = irda_usb_find_class_desc(serial, 0);
if (!irda_desc) {
Expand All @@ -205,18 +206,20 @@ static int ir_startup(struct usb_serial *serial)
return -ENODEV;
}

rates = le16_to_cpu(irda_desc->wBaudRate);

dev_dbg(&serial->dev->dev,
"%s - Baud rates supported:%s%s%s%s%s%s%s%s%s\n",
__func__,
(irda_desc->wBaudRate & USB_IRDA_BR_2400) ? " 2400" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_9600) ? " 9600" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_19200) ? " 19200" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_38400) ? " 38400" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_57600) ? " 57600" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_115200) ? " 115200" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_576000) ? " 576000" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_1152000) ? " 1152000" : "",
(irda_desc->wBaudRate & USB_IRDA_BR_4000000) ? " 4000000" : "");
(rates & USB_IRDA_BR_2400) ? " 2400" : "",
(rates & USB_IRDA_BR_9600) ? " 9600" : "",
(rates & USB_IRDA_BR_19200) ? " 19200" : "",
(rates & USB_IRDA_BR_38400) ? " 38400" : "",
(rates & USB_IRDA_BR_57600) ? " 57600" : "",
(rates & USB_IRDA_BR_115200) ? " 115200" : "",
(rates & USB_IRDA_BR_576000) ? " 576000" : "",
(rates & USB_IRDA_BR_1152000) ? " 1152000" : "",
(rates & USB_IRDA_BR_4000000) ? " 4000000" : "");

switch (irda_desc->bmAdditionalBOFs) {
case USB_IRDA_AB_48:
Expand Down
2 changes: 1 addition & 1 deletion drivers/usb/serial/mct_u232.c
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Original file line number Diff line number Diff line change
Expand Up @@ -189,7 +189,7 @@ static int mct_u232_set_baud_rate(struct tty_struct *tty,
return -ENOMEM;

divisor = mct_u232_calculate_baud_rate(serial, value, &speed);
put_unaligned_le32(cpu_to_le32(divisor), buf);
put_unaligned_le32(divisor, buf);
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
MCT_U232_SET_BAUD_RATE_REQUEST,
MCT_U232_SET_REQUEST_TYPE,
Expand Down
8 changes: 8 additions & 0 deletions drivers/usb/serial/option.c
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Original file line number Diff line number Diff line change
Expand Up @@ -281,6 +281,7 @@ static void option_instat_callback(struct urb *urb);
#define TELIT_PRODUCT_LE922_USBCFG0 0x1042
#define TELIT_PRODUCT_LE922_USBCFG3 0x1043
#define TELIT_PRODUCT_LE922_USBCFG5 0x1045
#define TELIT_PRODUCT_ME910 0x1100
#define TELIT_PRODUCT_LE920 0x1200
#define TELIT_PRODUCT_LE910 0x1201
#define TELIT_PRODUCT_LE910_USBCFG4 0x1206
Expand Down Expand Up @@ -640,6 +641,11 @@ static const struct option_blacklist_info simcom_sim7100e_blacklist = {
.reserved = BIT(5) | BIT(6),
};

static const struct option_blacklist_info telit_me910_blacklist = {
.sendsetup = BIT(0),
.reserved = BIT(1) | BIT(3),
};

static const struct option_blacklist_info telit_le910_blacklist = {
.sendsetup = BIT(0),
.reserved = BIT(1) | BIT(2),
Expand Down Expand Up @@ -1235,6 +1241,8 @@ static const struct usb_device_id option_ids[] = {
.driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg3 },
{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, TELIT_PRODUCT_LE922_USBCFG5, 0xff),
.driver_info = (kernel_ulong_t)&telit_le922_blacklist_usbcfg0 },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
.driver_info = (kernel_ulong_t)&telit_me910_blacklist },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910),
.driver_info = (kernel_ulong_t)&telit_le910_blacklist },
{ USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_LE910_USBCFG4),
Expand Down
2 changes: 2 additions & 0 deletions drivers/usb/serial/qcserial.c
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Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,8 @@ static const struct usb_device_id id_table[] = {
{DEVICE_SWI(0x1199, 0x9071)}, /* Sierra Wireless MC74xx */
{DEVICE_SWI(0x1199, 0x9078)}, /* Sierra Wireless EM74xx */
{DEVICE_SWI(0x1199, 0x9079)}, /* Sierra Wireless EM74xx */
{DEVICE_SWI(0x1199, 0x907a)}, /* Sierra Wireless EM74xx QDL */
{DEVICE_SWI(0x1199, 0x907b)}, /* Sierra Wireless EM74xx */
{DEVICE_SWI(0x413c, 0x81a2)}, /* Dell Wireless 5806 Gobi(TM) 4G LTE Mobile Broadband Card */
{DEVICE_SWI(0x413c, 0x81a3)}, /* Dell Wireless 5570 HSPA+ (42Mbps) Mobile Broadband Card */
{DEVICE_SWI(0x413c, 0x81a4)}, /* Dell Wireless 5570e HSPA+ (42Mbps) Mobile Broadband Card */
Expand Down

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