lib: add error for driver incompatibility

Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

lib: add error for driver incompatibility
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
8267c532 · Federico Vaga · 3c981f75 · 8267c532 · 8267c532 · 8267c532
Commit 8267c532 authored Sep 06, 2021 by Federico Vaga
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adc-lib.h lib/adc-lib.h +1 -0

fmc-adc-100m14b4cha.c lib/fmc-adc-100m14b4cha.c +1 -1

lib.c lib/lib.c +1 -0

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--- a/lib/adc-lib.h
+++ b/lib/adc-lib.h
@@ -34,6 +34,7 @@ extern "C" {
 #define ADC_OFF_AC_RESTORE_S	1037
 #define ADC_OFF_AC_RESTORE_R	1038
 #define ADC_ENOFLAGS		1039
+#define ADC_EDRVVERSION		1040

 /**
 * Opaque type. any instance of this should be used as token

--- a/lib/fmc-adc-100m14b4cha.c
+++ b/lib/fmc-adc-100m14b4cha.c
@@ -216,7 +216,7 @@ static struct adc_dev *adc_100m14b4cha_open(const struct adc_board_type *b,
 	int err, bits;

 	if (!adc_100m14b4cha_is_driver_compatible()) {
-		errno = EPERM;
+		errno = ADC_EDRVVERSION;
 		return NULL;
 	}


--- a/lib/lib.c
+++ b/lib/lib.c
@@ -36,6 +36,7 @@ static struct adc_errors {
 	{ADC_OFF_AC_RESTORE_S, "Offset auto-clear: cannot store configuration"},
 	{ADC_OFF_AC_RESTORE_R, "Offset auto-clear: cannot restore configuration"},
 	{ADC_ENOFLAGS, "Unsupported flags"},
+	{ADC_EDRVVERSION, "Incompatible driver version"},
 	{ 0, }
 };