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Message-Id: <20230726115806.5702-1-machel@vivo.com>
Date: Wed, 26 Jul 2023 19:57:56 +0800
From: Wang Ming <machel@...o.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Michal Simek <michal.simek@....com>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: opensource.kernel@...o.com, Wang Ming <machel@...o.com>
Subject: [PATCH v2] gpu: drm: Use dev_err_probe instead of dev_err
It is possible that dma_request_chan will return EPROBE_DEFER,
which means that disp->dev is not ready yet. In this case,
dev_err(disp->dev), there will be no output. This patch fixes the bug.
Signed-off-by: Wang Ming <machel@...o.com>
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 3b87eebddc97..676f09fe8594 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -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;
}
--
2.25.1
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