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drm: xlnx: zynqmp_dpsub: Use dev_err_probe instead of dev_err

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It is possible that dma_request_chan() returns EPROBE_DEFER, in which
case the driver defers probing without printing any message. Use
dev_err_probe() to record the probe deferral cause and ease debugging.

Signed-off-by: Wang Ming <machel@vivo.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Wang Ming 2023-07-26 19:57:56 +08:00 committed by Laurent Pinchart
parent 1832fba7f9
commit 55354ee7dc
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/xlnx/zynqmp_disp.c
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@ -1094,8 +1094,8 @@ static int zynqmp_disp_layer_request_dma(struct zynqmp_disp *disp,
"%s%u", dma_names[layer->id], i);
dma->chan = dma_request_chan(disp->dev, dma_channel_name);
if (IS_ERR(dma->chan)) {
dev_err(disp->dev, "failed to request dma channel\n");
ret = PTR_ERR(dma->chan);
ret = dev_err_probe(disp->dev, PTR_ERR(dma->chan),
"failed to request dma channel\n");
dma->chan = NULL;
return ret;
}