usb: dwc3: set the dma max_seg_size

commit 8bbae288a85abed6a1cf7d185d8b9dc2f5dcb12c upstream.

Allow devices to have dma operations beyond 4K, and avoid warnings such
as:

DMA-API: dwc3 a600000.usb: mapping sg segment longer than device claims to support [len=86016] [max=65536]

Cc: stable@vger.kernel.org
Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver")
Reported-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20231026-dwc3-v2-1-1d4fd5c3e067@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 558e730d25f07f74aa2c3ea53564a4b182d400aa..2e0ef23d2122ac4da37282dc09b304649787f81a 100644 (file)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -1288,6 +1288,8 @@ static int dwc3_probe(struct platform_device *pdev)
        dwc3_debugfs_init(dwc);
        pm_runtime_put(dev);
 
+       dma_set_max_seg_size(dev, UINT_MAX);
+
        return 0;
 
 err5: