[PATCH v2 1/2] Input: touchscreen-iproc: Add Broadcom iProc touchscreen driver

Hi,

Would anyone be able to look at this to help us move forward? Thanks.

On 14-12-19 03:03 PM, Jonathan Richardson wrote:

On 14-12-19 02:26 PM, Joe Perches wrote:

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On Fri, 2014-12-19 at 14:17 -0800, Jonathan Richardson wrote:

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Add initial version of the Broadcom touchscreen driver.

more trivia:

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diff --git a/drivers/input/touchscreen/bcm_iproc_tsc.c b/drivers/input/touchscreen/bcm_iproc_tsc.c

[]

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+static int get_tsc_config(struct device_node *np, struct iproc_ts_priv *priv)
+{
+	u32 val;

[]

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+	if (of_property_read_u32(np, "debounce_timeout", &val) >= 0) {
+		if (val < 0 || val > 255) {
+			dev_err(dev, "debounce_timeout must be [0-255]\n");
+			return -EINVAL;
+		}
+		priv->cfg_params.debounce_timeout = val;

Doesn't the compiler generate a warning message
about an impossible "unsigned < 0" test for all
of these "val < 0" uses?

Actually no it doesn't. The gcc output shows that neither -Wtype-limits
nor -Wextra are used to compile that file. I assume this is because
there would be just too many warnings.

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+	}
+
+	if (of_property_read_u32(np, "settling_timeout", &val) >= 0) {
+		if (val < 0 || val > 11) {

[]

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+	if (of_property_read_u32(np, "touch_timeout", &val) >= 0) {
+		if (val < 0 || val > 255) {

[]

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+	if (of_property_read_u32(np, "average_data", &val) >= 0) {
+		if (val < 0 || val > 8) {

[]

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+	if (of_property_read_u32(np, "fifo_threshold", &val) >= 0) {
+		if (val < 0 || val > 31) {