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device/msc: skip command stage if EP out is stalled

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Signed-off-by: Zixun LI <admin@hifiphile.com>
This commit is contained in:
Zixun LI
2026-01-26 16:11:24 +01:00
parent dc00f3536f
commit 697f6b313e
1 changed files with 6 additions and 1 deletions
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7
src/class/msc/msc_device.c
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@ -121,7 +121,12 @@ TU_ATTR_ALWAYS_INLINE static inline bool send_csw(mscd_interface_t* p_msc) {
TU_ATTR_ALWAYS_INLINE static inline bool prepare_cbw(mscd_interface_t* p_msc) {
uint8_t rhport = p_msc->rhport;
p_msc->stage = MSC_STAGE_CMD;
return usbd_edpt_xfer(rhport, p_msc->ep_out, _mscd_epbuf.buf, sizeof(msc_cbw_t), false);
// Skip command stage until Clear Stall request if endpoint is stalled
if (!usbd_edpt_stalled(rhport, p_msc->ep_out)) {
return usbd_edpt_xfer(rhport, p_msc->ep_out, _mscd_epbuf.buf, sizeof(msc_cbw_t), false);
} else {
return true;
}
}
static void fail_scsi_op(mscd_interface_t* p_msc, uint8_t status) {