diff options
Diffstat (limited to 'at91lib/usb')
| -rw-r--r-- | at91lib/usb/device/core/USBDDriver.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/at91lib/usb/device/core/USBDDriver.c b/at91lib/usb/device/core/USBDDriver.c index f84f6c6..42b41bf 100644 --- a/at91lib/usb/device/core/USBDDriver.c +++ b/at91lib/usb/device/core/USBDDriver.c @@ -49,13 +49,17 @@ #include <string.h>
-static const USBConfigurationDescriptor *GetCurConfigDesc(USBDDriver *pDriver)
+static const USBConfigurationDescriptor *
+GetConfigDesc(const USBDDriver *pDriver, unsigned char cfgnum)
{
- unsigned char cfgidx = pDriver->cfgnum;
+ unsigned char cfgidx = cfgnum;
if (cfgidx != 0)
cfgidx -= 1;
+ if (cfgidx >= USBD_NUM_CONFIGS)
+ return NULL;
+
// Use different descriptor depending on device speed
if (USBD_IsHighSpeed())
return pDriver->pDescriptors->pHsConfiguration[cfgidx];
@@ -63,13 +67,17 @@ static const USBConfigurationDescriptor *GetCurConfigDesc(USBDDriver *pDriver) return pDriver->pDescriptors->pFsConfiguration[cfgidx];
}
-static const USBConfigurationDescriptor *GetCurOtherSpeedDesc(USBDDriver *pDriver)
+static const USBConfigurationDescriptor *
+GetOtherSpeedDesc(const USBDDriver *pDriver, unsigned char cfgnum)
{
- unsigned char cfgidx = pDriver->cfgnum;
+ unsigned char cfgidx = cfgnum;
if (cfgidx != 0)
cfgidx -= 1;
+ if (cfgidx >= USBD_NUM_CONFIGS)
+ return NULL;
+
// Use different descriptor depending on device speed
if (USBD_IsHighSpeed())
return pDriver->pDescriptors->pHsOtherSpeed[cfgidx];
@@ -97,7 +105,7 @@ static void SetConfiguration(USBDDriver *pDriver, unsigned char cfgnum) USBD_SetConfiguration(cfgnum);
pDriver->cfgnum = cfgnum;
- pConfiguration = GetCurConfigDesc(pDriver);
+ pConfiguration = GetConfigDesc(pDriver, cfgnum);
// If the configuration is not 0, configure endpoints
if (cfgnum != 0) {
@@ -142,7 +150,7 @@ static void GetDeviceStatus(const USBDDriver *pDriver) unsigned short data = 0;
const USBConfigurationDescriptor *pConfiguration;
- pConfiguration = GetCurConfigDesc(pDriver);
+ pConfiguration = GetConfigDesc(pDriver, pDriver->cfgnum);
// Check current configuration for power mode (if device is configured)
if (pDriver->cfgnum != 0) {
@@ -225,8 +233,6 @@ static void GetDescriptor( pDevice = pDriver->pDescriptors->pFsDevice;
pQualifier = pDriver->pDescriptors->pFsQualifier;
}
- pConfiguration = GetCurConfigDesc(pDriver);
- pOtherSpeed = GetCurOtherSpeedDesc(pDriver);
// Check the descriptor type
switch (type) {
@@ -243,7 +249,8 @@ static void GetDescriptor( break;
case USBGenericDescriptor_CONFIGURATION:
- TRACE_INFO_WP("Cfg ");
+ TRACE_INFO_WP("Cfg%u ", index);
+ pConfiguration = GetConfigDesc(pDriver, index);
// Adjust length and send descriptor
if (length > USBConfigurationDescriptor_GetTotalLength(pConfiguration)) {
@@ -273,7 +280,8 @@ static void GetDescriptor( break;
case USBGenericDescriptor_OTHERSPEEDCONFIGURATION:
- TRACE_INFO_WP("OSC ");
+ TRACE_INFO_WP("OSC%u ", index);
+ pOtherSpeed = GetOtherSpeedDesc(pDriver, index);
// Check if descriptor exists
if (!pOtherSpeed) {
|