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drivers: usb: stm32: fix potential null pointer dereference

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perform null pointer check before dereferencing.

Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
This commit is contained in:
Jacob Siverskog 2021-02-15 20:11:27 +01:00 committed by Ioannis Glaropoulos
parent 4004665fa7
commit 6e0ef1cdd9
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/device/usb_dc_stm32.c
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@ -627,14 +627,14 @@ int usb_dc_ep_configure(const struct usb_dc_ep_cfg_data * const ep_cfg)
uint8_t ep = ep_cfg->ep_addr;
struct usb_dc_stm32_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
LOG_DBG("ep 0x%02x, previous ep_mps %u, ep_mps %u, ep_type %u",
ep_cfg->ep_addr, ep_state->ep_mps, ep_cfg->ep_mps,
ep_cfg->ep_type);
if (!ep_state) {
return -EINVAL;
}
LOG_DBG("ep 0x%02x, previous ep_mps %u, ep_mps %u, ep_type %u",
ep_cfg->ep_addr, ep_state->ep_mps, ep_cfg->ep_mps,
ep_cfg->ep_type);
#ifdef USB
if (ep_cfg->ep_mps > ep_state->ep_pma_buf_len) {
if (USB_RAM_SIZE <=