Variant of the int_msg wrapper that does not introduce excessive retry delay on error.
Signed-off-by: Michal Suchanek msuchanek@suse.de --- v2: usb_submit_int_msg -> usb_int_msg --- common/usb.c | 9 +++++++++ include/usb.h | 2 ++ 2 files changed, 11 insertions(+)
diff --git a/common/usb.c b/common/usb.c index f57c0e8cdf57..1bd60b24a555 100644 --- a/common/usb.c +++ b/common/usb.c @@ -200,6 +200,15 @@ int usb_int_msg(struct usb_device *dev, unsigned long pipe, return submit_int_msg(dev, pipe, buffer, transfer_len, interval, false); }
+/* + * submits an Interrupt Message without retry + */ +int usb_int_msg_nonblock(struct usb_device *dev, unsigned long pipe, + void *buffer, int transfer_len, int interval) +{ + return submit_int_msg(dev, pipe, buffer, transfer_len, interval, true); +} + /* * submits a control message and waits for comletion (at least timeout * 1ms) * If timeout is 0, we don't wait for completion (used as example to set and diff --git a/include/usb.h b/include/usb.h index 6ca2eb30d08a..b0a079766652 100644 --- a/include/usb.h +++ b/include/usb.h @@ -263,6 +263,8 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, void *data, int len, int *actual_length, int timeout); int usb_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int transfer_len, int interval); +int usb_int_msg_nonblock(struct usb_device *dev, unsigned long pipe, + void *buffer, int transfer_len, int interval); int usb_disable_asynch(int disable); int usb_maxpacket(struct usb_device *dev, unsigned long pipe); int usb_get_configuration_no(struct usb_device *dev, int cfgno,