[PATCH i-g-t 5/6] tools/intel_reg: Add wrapper for reg access init

[Lucas De Marchi <lucas.demarchi@intel.com>]

Extract helper function so it can be extended to xe.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 tools/intel_reg.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/tools/intel_reg.c b/tools/intel_reg.c
index c5800cf05..906ae9b84 100644
--- a/tools/intel_reg.c
+++ b/tools/intel_reg.c
@@ -800,6 +800,11 @@ static int parse_reg(struct config *config, struct reg *reg, const char *s)
 	return ret;
 }
 
+static int register_access_init(struct config *config)
+{
+	return intel_register_access_init(&config->mmio_data, config->pci_dev, 0, -1);
+}
+
 /* XXX: add support for register ranges, maybe REGISTER..REGISTER */
 static int intel_reg_read(struct config *config, int argc, char *argv[])
 {
@@ -812,8 +817,8 @@ static int intel_reg_read(struct config *config, int argc, char *argv[])
 
 	if (config->mmiofile)
 		intel_mmio_use_dump_file(&config->mmio_data, config->mmiofile);
-	else
-		intel_register_access_init(&config->mmio_data, config->pci_dev, 0, -1);
+	else if (register_access_init(config) < 0)
+		return EXIT_FAILURE;
 
 	for (i = 1; i < argc; i++) {
 		struct reg reg;
@@ -843,7 +848,9 @@ static int intel_reg_write(struct config *config, int argc, char *argv[])
 		return EXIT_FAILURE;
 	}
 
-	intel_register_access_init(&config->mmio_data, config->pci_dev, 0, -1);
+
+	if (register_access_init(config) < 0)
+		return EXIT_FAILURE;
 
 	for (i = 1; i < argc; i += 2) {
 		struct reg reg;
@@ -880,8 +887,8 @@ static int intel_reg_dump(struct config *config, int argc, char *argv[])
 
 	if (config->mmiofile)
 		intel_mmio_use_dump_file(&config->mmio_data, config->mmiofile);
-	else
-		intel_register_access_init(&config->mmio_data, config->pci_dev, 0, -1);
+	else if (register_access_init(config) < 0)
+		return EXIT_FAILURE;
 
 	for (i = 0; i < config->regcount; i++) {
 		reg = &config->regs[i];
-- 
2.46.1