Messages in this thread Patch in this message | | | From | Ricardo Ribalda <> | Date | Fri, 27 Oct 2023 11:28:20 +0000 | Subject | [PATCH v2] usb: dwc3: set the dma max_seg_size |
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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> --- Found while running yavta -f YUYV -s 1280x720 -c /dev/video0
with:
CONFIG_DMA_API_DEBUG=y --- Changes in v2: - Add stable tag - Link to v1: https://lore.kernel.org/r/20231026-dwc3-v1-1-643c74771599@chromium.org --- drivers/usb/dwc3/core.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 343d2570189f..65f73dd8ef47 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1918,6 +1918,8 @@ static int dwc3_probe(struct platform_device *pdev) pm_runtime_put(dev); + dma_set_max_seg_size(dev, UINT_MAX); + return 0; err_exit_debugfs: --- base-commit: 611da07b89fdd53f140d7b33013f255bf0ed8f34 change-id: 20231026-dwc3-fac74fcb3b2a Best regards, -- Ricardo Ribalda <ribalda@chromium.org>
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