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Commit 75bf5e78 authored by Minas Harutyunyan's avatar Minas Harutyunyan Committed by Greg Kroah-Hartman
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usb: dwc2: host: Fix dereference issue in DDMA completion flow. 



commit eed04fa96c48790c1cce73c8a248e9d460b088f8 upstream.

Fixed variable dereference issue in DDMA completion flow.

Fixes: b258e4268850 ("usb: dwc2: host: Fix ISOC flow in DDMA mode")
CC: stable@vger.kernel.org
Reported-by: default avatarDan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-usb/2024040834-ethically-rumble-701f@gregkh/T/#m4c4b83bef0ebb4b67fe2e0a7d6466cbb6f416e39


Signed-off-by: default avatarMinas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/cc826d3ef53c934d8e6d98870f17f3cdc3d2755d.1712665387.git.Minas.Harutyunyan@synopsys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 164be0a8

drivers/usb/dwc2/hcd_ddma.c

+3 −1
Original line number Diff line number Diff line
@@ -897,13 +897,15 @@ static int dwc2_cmpl_host_isoc_dma_desc(struct dwc2_hsotg *hsotg, 
	struct dwc2_dma_desc *dma_desc;

	struct dwc2_hcd_iso_packet_desc *frame_desc;

	u16 frame_desc_idx;

	struct urb *usb_urb = qtd->urb->priv;

	struct urb *usb_urb;

	u16 remain = 0;

	int rc = 0;



	if (!qtd->urb)

		return -EINVAL;



	usb_urb = qtd->urb->priv;



	dma_sync_single_for_cpu(hsotg->dev, qh->desc_list_dma + (idx *

				sizeof(struct dwc2_dma_desc)),

				sizeof(struct dwc2_dma_desc),