From: Ruslan Bilovol ruslan.bilovol@gmail.com
[ Upstream commit a9cf8715180b18c62addbfe6f6267b8101903119 ]
As per UAC2 spec (ch. 4.7.2), wTotalLength of AC Interface Header Descriptor "includes the combined length of this descriptor header and all Clock Source, Unit and Terminal descriptors."
Thus add its size to its wTotalLength.
Also after recent changes wTotalLength is calculated dynamically, update static definition of uac2_ac_header_descriptor accordingly
Fixes: 132fcb460839 ("usb: gadget: Add Audio Class 2.0 Driver") Signed-off-by: Ruslan Bilovol ruslan.bilovol@gmail.com Signed-off-by: Felipe Balbi balbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/function/f_uac2.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index db2d4980cb354..3633df6d7610f 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -215,10 +215,7 @@ static struct uac2_ac_header_descriptor ac_hdr_desc = { .bDescriptorSubtype = UAC_MS_HEADER, .bcdADC = cpu_to_le16(0x200), .bCategory = UAC2_FUNCTION_IO_BOX, - .wTotalLength = cpu_to_le16(sizeof in_clk_src_desc - + sizeof out_clk_src_desc + sizeof usb_out_it_desc - + sizeof io_in_it_desc + sizeof usb_in_ot_desc - + sizeof io_out_ot_desc), + /* .wTotalLength = DYNAMIC */ .bmControls = 0, };
@@ -501,7 +498,7 @@ static void setup_descriptor(struct f_uac2_opts *opts) as_in_hdr_desc.bTerminalLink = usb_in_ot_desc.bTerminalID;
iad_desc.bInterfaceCount = 1; - ac_hdr_desc.wTotalLength = 0; + ac_hdr_desc.wTotalLength = cpu_to_le16(sizeof(ac_hdr_desc));
if (EPIN_EN(opts)) { u16 len = le16_to_cpu(ac_hdr_desc.wTotalLength);