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dfu: Allow DFU coexistence with other interfaces (BTH, RNDIS, future one) #1597

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merged 1 commit into from Aug 10, 2022
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dfu: Allow DFU coexistence with other interfaces (BTH, RNDIS, future one) #1597

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2 changes: 2 additions & 0 deletions src/class/dfu/dfu_device.c
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Expand Up @@ -167,6 +167,8 @@ uint16_t dfu_moded_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc,
uint8_t alt_count = 0;

uint16_t drv_len = 0;
TU_VERIFY(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU, 0);

while(itf_desc->bInterfaceSubClass == TUD_DFU_APP_SUBCLASS && itf_desc->bInterfaceProtocol == DFU_PROTOCOL_DFU)
{
TU_ASSERT(max_len > drv_len, 0);
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