diff options
Diffstat (limited to 'drivers/usb/gadget/function/f_midi2.c')
| -rw-r--r-- | drivers/usb/gadget/function/f_midi2.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/usb/gadget/function/f_midi2.c b/drivers/usb/gadget/function/f_midi2.c index 38e8ed3144f0..8285df9ed6fd 100644 --- a/drivers/usb/gadget/function/f_midi2.c +++ b/drivers/usb/gadget/function/f_midi2.c @@ -15,11 +15,11 @@ #include <sound/ump_convert.h> #include <linux/usb/ch9.h> +#include <linux/usb/func_utils.h> #include <linux/usb/gadget.h> #include <linux/usb/audio.h> #include <linux/usb/midi-v2.h> -#include "u_f.h" #include "u_midi2.h" struct f_midi2; @@ -642,12 +642,21 @@ static void process_ump_stream_msg(struct f_midi2_ep *ep, const u32 *data) if (format) return; // invalid blk = (*data >> 8) & 0xff; - if (blk >= ep->num_blks) - return; - if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO) - reply_ump_stream_fb_info(ep, blk); - if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME) - reply_ump_stream_fb_name(ep, blk); + if (blk == 0xff) { + /* inquiry for all blocks */ + for (blk = 0; blk < ep->num_blks; blk++) { + if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO) + reply_ump_stream_fb_info(ep, blk); + if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME) + reply_ump_stream_fb_name(ep, blk); + } + } else if (blk < ep->num_blks) { + /* only the specified block */ + if (*data & UMP_STREAM_MSG_REQUEST_FB_INFO) + reply_ump_stream_fb_info(ep, blk); + if (*data & UMP_STREAM_MSG_REQUEST_FB_NAME) + reply_ump_stream_fb_name(ep, blk); + } return; } } |