usb: usb_dc_stm32: Fix reading invalid EP
Fix crash when reading invalid endpoint found in harness test. Fixes #13560 Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
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1 changed files with 8 additions and 1 deletions
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@ -782,7 +782,14 @@ int usb_dc_ep_read_wait(u8_t ep, u8_t *data, u32_t max_data_len,
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u32_t *read_bytes)
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{
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struct usb_dc_stm32_ep_state *ep_state = usb_dc_stm32_get_ep_state(ep);
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u32_t read_count = ep_state->read_count;
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u32_t read_count;
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if (!ep_state) {
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LOG_ERR("Invalid Endpoint %x", ep);
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return -EINVAL;
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}
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read_count = ep_state->read_count;
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LOG_DBG("ep 0x%02x, %u bytes, %u+%u, %p", ep, max_data_len,
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ep_state->read_offset, read_count, data);
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