Since upgrading to gcc9, warnings are issued: "taking address of packed member of ‘...’ may result in an unaligned pointer value"
Fix this by converting dwc2_fifo_read to use unaligned access since packed structures may be on an unaligned address, depending on USB hardware.
Signed-off-by: Simon Goldschmidt simon.k.r.goldschmidt@gmail.com ---
Changes in v2: None
drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c index 7eb632d3b1..dba221dad0 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c +++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c @@ -731,7 +731,7 @@ static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req) return 0; }
-static int dwc2_fifo_read(struct dwc2_ep *ep, u32 *cp, int max) +static int dwc2_fifo_read(struct dwc2_ep *ep, void *cp, int max) { invalidate_dcache_range((unsigned long)cp, (unsigned long)cp + ROUND(max, CONFIG_SYS_CACHELINE_SIZE)); @@ -1285,7 +1285,7 @@ static void dwc2_ep0_setup(struct dwc2_udc *dev) nuke(ep, -EPROTO);
/* read control req from fifo (8 bytes) */ - dwc2_fifo_read(ep, (u32 *)usb_ctrl, 8); + dwc2_fifo_read(ep, usb_ctrl, 8);
debug_cond(DEBUG_SETUP != 0, "%s: bRequestType = 0x%x(%s), bRequest = 0x%x"