diff options
| author | Neil Armstrong <narmstrong@baylibre.com> | 2019-02-04 10:49:37 +0100 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2019-02-07 16:31:30 -0800 |
| commit | 382f8be04551d60c3e0c4103ce2941c3f335279e (patch) | |
| tree | c17f3860fc982b3fae15a01579be02c7257971fc /drivers/soc/amlogic | |
| parent | 99e5a8df8b3627239ecef09547931a81618d0851 (diff) | |
soc: amlogic: canvas: Fix meson_canvas_get when probe failed
When probe fails, a platforn_device is still associated to the node,
but dev_get_drvdata() returns NULL.
Handle this case by returning a consistent error.
Fixes: d4983983d987 ("soc: amlogic: add meson-canvas driver")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Maxime Jourdan <mjourdan@baylibre.com>
[khilman: fixed minor typo in comment ]
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'drivers/soc/amlogic')
| -rw-r--r-- | drivers/soc/amlogic/meson-canvas.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/soc/amlogic/meson-canvas.c b/drivers/soc/amlogic/meson-canvas.c index 87a6c6e23591..be95a37c3fec 100644 --- a/drivers/soc/amlogic/meson-canvas.c +++ b/drivers/soc/amlogic/meson-canvas.c @@ -51,6 +51,7 @@ struct meson_canvas *meson_canvas_get(struct device *dev) { struct device_node *canvas_node; struct platform_device *canvas_pdev; + struct meson_canvas *canvas; canvas_node = of_parse_phandle(dev->of_node, "amlogic,canvas", 0); if (!canvas_node) @@ -63,7 +64,17 @@ struct meson_canvas *meson_canvas_get(struct device *dev) } of_node_put(canvas_node); - return dev_get_drvdata(&canvas_pdev->dev); + + /* + * If priv is NULL, it's probably because the canvas hasn't + * properly initialized. Bail out with -EINVAL because, in the + * current state, this driver probe cannot return -EPROBE_DEFER + */ + canvas = dev_get_drvdata(&canvas_pdev->dev); + if (!canvas) + return ERR_PTR(-EINVAL); + + return canvas; } EXPORT_SYMBOL_GPL(meson_canvas_get); |