From e29e24bdabfeddbf8b1a4ecac1af439a85150438 Mon Sep 17 00:00:00 2001 From: Marijn Suijten Date: Mon, 15 Nov 2021 21:34:52 +0100 Subject: backlight: qcom-wled: Pass number of elements to read to read_u32_array of_property_read_u32_array takes the number of elements to read as last argument. This does not always need to be 4 (sizeof(u32)) but should instead be the size of the array in DT as read just above with of_property_count_elems_of_size. To not make such an error go unnoticed again the driver now bails accordingly when of_property_read_u32_array returns an error. Surprisingly the indentation of newlined arguments is lining up again after prepending `rc = `. Fixes: 775d2ffb4af6 ("backlight: qcom-wled: Restructure the driver for WLED3") Signed-off-by: Marijn Suijten Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Daniel Thompson Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20211115203459.1634079-3-marijn.suijten@somainline.org --- drivers/video/backlight/qcom-wled.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'drivers/video') diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c index 8a42ed89c59c..d413b913fef3 100644 --- a/drivers/video/backlight/qcom-wled.c +++ b/drivers/video/backlight/qcom-wled.c @@ -1535,10 +1535,15 @@ static int wled_configure(struct wled *wled) return -EINVAL; } - of_property_read_u32_array(dev->of_node, + rc = of_property_read_u32_array(dev->of_node, "qcom,enabled-strings", wled->cfg.enabled_strings, - sizeof(u32)); + string_len); + if (rc) { + dev_err(dev, "Failed to read %d elements from qcom,enabled-strings: %d\n", + string_len, rc); + return rc; + } for (i = 0; i < string_len; ++i) { if (wled->cfg.enabled_strings[i] >= wled->max_string_count) { -- cgit v1.2.3-59-g8ed1b