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| author | Daniele Palmas <dnlplm@gmail.com> | 2019-12-19 11:07:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-14 20:07:04 +0100 |
| commit | 60ee12c9e0b0b8a1d0650948275ae312c1d4a9f9 (patch) | |
| tree | 7a3bcc742973cc8dbf7322a4e6c91b42a579722a /drivers/usb | |
| parent | 24e0769fdbe99533582f3924438fc5de87bae198 (diff) | |
| download | linux-stable-60ee12c9e0b0b8a1d0650948275ae312c1d4a9f9.tar.gz linux-stable-60ee12c9e0b0b8a1d0650948275ae312c1d4a9f9.tar.bz2 linux-stable-60ee12c9e0b0b8a1d0650948275ae312c1d4a9f9.zip | |
USB: serial: option: add ZLP support for 0x1bc7/0x9010
commit 2438c3a19dec5e98905fd3ffcc2f24716aceda6b upstream.
Telit FN980 flashing device 0x1bc7/0x9010 requires zero packet
to be sent if out data size is is equal to the endpoint max size.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
[ johan: switch operands in conditional ]
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/serial/option.c | 8 | ||||
| -rw-r--r-- | drivers/usb/serial/usb-wwan.h | 1 | ||||
| -rw-r--r-- | drivers/usb/serial/usb_wwan.c | 4 |
3 files changed, 13 insertions, 0 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 553adab174bf..a157784e2059 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -567,6 +567,9 @@ static void option_instat_callback(struct urb *urb); /* Interface must have two endpoints */ #define NUMEP2 BIT(16) +/* Device needs ZLP */ +#define ZLP BIT(17) + static const struct usb_device_id option_ids[] = { { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) }, @@ -1198,6 +1201,8 @@ static const struct usb_device_id option_ids[] = { .driver_info = NCTRL(0) | RSVD(1) }, { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1901, 0xff), /* Telit LN940 (MBIM) */ .driver_info = NCTRL(0) }, + { USB_DEVICE(TELIT_VENDOR_ID, 0x9010), /* Telit SBL FN980 flashing device */ + .driver_info = NCTRL(0) | ZLP }, { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MF622, 0xff, 0xff, 0xff) }, /* ZTE WCDMA products */ { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0002, 0xff, 0xff, 0xff), .driver_info = RSVD(1) }, @@ -2098,6 +2103,9 @@ static int option_attach(struct usb_serial *serial) if (!(device_flags & NCTRL(iface_desc->bInterfaceNumber))) data->use_send_setup = 1; + if (device_flags & ZLP) + data->use_zlp = 1; + spin_lock_init(&data->susp_lock); usb_set_serial_data(serial, data); diff --git a/drivers/usb/serial/usb-wwan.h b/drivers/usb/serial/usb-wwan.h index d28dab4b9eff..9879773fb39e 100644 --- a/drivers/usb/serial/usb-wwan.h +++ b/drivers/usb/serial/usb-wwan.h @@ -36,6 +36,7 @@ struct usb_wwan_intf_private { spinlock_t susp_lock; unsigned int suspended:1; unsigned int use_send_setup:1; + unsigned int use_zlp:1; int in_flight; unsigned int open_ports; void *private; diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 912472f26e4f..35406cb4a726 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -490,6 +490,7 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port, void (*callback) (struct urb *)) { struct usb_serial *serial = port->serial; + struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial); struct urb *urb; urb = usb_alloc_urb(0, GFP_KERNEL); /* No ISO */ @@ -500,6 +501,9 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port, usb_sndbulkpipe(serial->dev, endpoint) | dir, buf, len, callback, ctx); + if (intfdata->use_zlp && dir == USB_DIR_OUT) + urb->transfer_flags |= URB_ZERO_PACKET; + return urb; } |