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usb_standard_request: Sent descriptors can be const

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This commit is contained in:
Ben Gamari
2013-09-08 22:28:40 -04:00
parent 4773ee5a53
commit 34fabad121
1 changed files with 3 additions and 2 deletions
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5
firmware/hackrf_usb/usb_standard_request.c
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@ -110,16 +110,17 @@ bool usb_set_configuration(
static usb_request_status_t usb_send_descriptor(
usb_endpoint_t* const endpoint,
uint8_t* const descriptor_data
const uint8_t* const descriptor_data
) {
const uint32_t setup_length = endpoint->setup.length;
uint32_t descriptor_length = descriptor_data[0];
if( descriptor_data[1] == USB_DESCRIPTOR_TYPE_CONFIGURATION ) {
descriptor_length = (descriptor_data[3] << 8) | descriptor_data[2];
}
// We cast the const away but this shouldn't be a problem as this is a write transfer
usb_transfer_schedule_block(
endpoint->in,
descriptor_data,
(uint8_t* const) descriptor_data,
(setup_length > descriptor_length) ? descriptor_length : setup_length,
NULL, NULL
);