espressif/esp-idf
1
0
Fork 1
mirror of https://github.com/espressif/esp-idf.git synced 2025-07-29 18:27:20 +02:00
Code Issues Packages Projects Releases Wiki Activity

usb_host: Fix interface descriptor parsing

Browse Source 
Previously the USB host driver did not accept interface number greater or equal bNumInterfaces, even though these are valid interface numbers
This commit is contained in:
Tomas Rezucha
2023-02-10 15:49:11 +01:00
committed by Saurabh Kumar Bansal
parent 62340efd94
commit 74f479151b
1 changed files with 0 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
components/usb/usb_helpers.c
View File

@ -76,9 +76,6 @@ int usb_parse_interface_number_of_alternate(const usb_config_desc_t *config_desc
const usb_intf_desc_t *usb_parse_interface_descriptor(const usb_config_desc_t *config_desc, uint8_t bInterfaceNumber, uint8_t bAlternateSetting, int *offset)
{
assert(config_desc != NULL);
if (bInterfaceNumber >= config_desc->bNumInterfaces) {
return NULL; //bInterfaceNumber is out of range
}
//Walk to first interface descriptor of bInterfaceNumber
int offset_temp = 0;