diff mbox series

[net-next,04/12] can: c_can: Use syscon_regmap_lookup_by_phandle_args

Message ID 20250219113354.529611-5-mkl@pengutronix.de (mailing list archive)
State Accepted
Commit 9f0f0345d0406cc17a764be4ce56e6c727cdf720
Delegated to: Netdev Maintainers
Headers show
Series [net-next,01/12] can: c_can: Drop useless final probe failure message | expand

Checks

Context Check Description
netdev/series_format success Pull request is its own cover letter
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 4 of 4 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch warning WARNING: line length of 82 exceeds 80 columns WARNING: line length of 88 exceeds 80 columns
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2025-02-19--15-00 (tests: 890)

Commit Message

Marc Kleine-Budde Feb. 19, 2025, 11:21 a.m. UTC 
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Use syscon_regmap_lookup_by_phandle_args() which is a wrapper over
syscon_regmap_lookup_by_phandle() combined with getting the syscon
argument.  Except simpler code this annotates within one line that given
phandle has arguments, so grepping for code would be easier.

There is also no real benefit in printing errors on missing syscon
argument, because this is done just too late: runtime check on
static/build-time data.  Dtschema and Devicetree bindings offer the
static/build-time check for this already.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250212-syscon-phandle-args-can-v2-4-ac9a1253396b@linaro.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/net/can/c_can/c_can_platform.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 1acceb097c17..19c86b94a40e 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -317,30 +317,21 @@  static int c_can_plat_probe(struct platform_device *pdev)
 		 * platforms. Only supported with DT boot.
 		 */
 		if (np && of_property_present(np, "syscon-raminit")) {
+			unsigned int args[2];
 			u32 id;
 			struct c_can_raminit *raminit = &priv->raminit_sys;
 
 			ret = -EINVAL;
-			raminit->syscon = syscon_regmap_lookup_by_phandle(np,
-									  "syscon-raminit");
+			raminit->syscon = syscon_regmap_lookup_by_phandle_args(np,
+									       "syscon-raminit",
+									       2, args);
 			if (IS_ERR(raminit->syscon)) {
 				ret = PTR_ERR(raminit->syscon);
 				goto exit_free_device;
 			}
 
-			if (of_property_read_u32_index(np, "syscon-raminit", 1,
-						       &raminit->reg)) {
-				dev_err(&pdev->dev,
-					"couldn't get the RAMINIT reg. offset!\n");
-				goto exit_free_device;
-			}
-
-			if (of_property_read_u32_index(np, "syscon-raminit", 2,
-						       &id)) {
-				dev_err(&pdev->dev,
-					"couldn't get the CAN instance ID\n");
-				goto exit_free_device;
-			}
+			raminit->reg = args[0];
+			id = args[1];
 
 			if (id >= drvdata->raminit_num) {
 				dev_err(&pdev->dev,