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drivers: usb: handle a null output arg on SAM0

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The output parameter `ret_bytes` is optional and may be NULL.

Signed-off-by: Michael Hope <mlhx@google.com>
This commit is contained in:
Michael Hope 2020-06-01 18:05:56 +02:00 • committed by Carles Cufí
commit fe35269d12
1 changed files with 3 additions and 1 deletions
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2
drivers/usb/device/usb_dc_sam0.c
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@ -562,7 +562,9 @@ int usb_dc_ep_write(uint8_t ep, const uint8_t *buf, uint32_t len, uint32_t *ret_
USB_DEVICE_EPINTFLAG_TRCPT1 | USB_DEVICE_EPINTFLAG_TRFAIL1;
endpoint->EPSTATUSSET.bit.BK1RDY = 1;
if (ret_bytes != NULL) {
*ret_bytes = len;
}
return 0;
}