[PATCH] ARM: at91: setup: refactor SoC subtype detection with switch statements

[Alexander Shiyan]

This patch replaces the series of independent if-statements in
dbgu_soc_detect() with a structured switch-case approach for
better code organization and readability.

Signed-off-by: Alexander Shiyan <eagle.alexander923 at gmail.com>
---
 arch/arm/mach-at91/setup.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index 708c946192..e8d45c30dd 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -102,7 +102,8 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 
 	at91_soc_initdata.cidr = cidr;
 
-	if (at91_soc_initdata.type == AT91_SOC_SAM9G45) {
+	switch (at91_soc_initdata.type) {
+	case AT91_SOC_SAM9G45:
 		switch (at91_soc_initdata.exid) {
 		case ARCH_EXID_AT91SAM9M10:
 			at91_soc_initdata.subtype = AT91_SOC_SAM9M10;
@@ -114,9 +115,8 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 			at91_soc_initdata.subtype = AT91_SOC_SAM9M11;
 			break;
 		}
-	}
-
-	if (at91_soc_initdata.type == AT91_SOC_SAM9X5) {
+		break;
+	case AT91_SOC_SAM9X5:
 		switch (at91_soc_initdata.exid) {
 		case ARCH_EXID_AT91SAM9G15:
 			at91_soc_initdata.subtype = AT91_SOC_SAM9G15;
@@ -134,9 +134,8 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 			at91_soc_initdata.subtype = AT91_SOC_SAM9X25;
 			break;
 		}
-	}
-
-	if (at91_soc_initdata.type == AT91_SOC_SAM9N12) {
+		break;
+	case AT91_SOC_SAM9N12:
 		switch (at91_soc_initdata.exid) {
 		case ARCH_EXID_AT91SAM9N12:
 			at91_soc_initdata.subtype = AT91_SOC_SAM9N12;
@@ -148,9 +147,8 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 			at91_soc_initdata.subtype = AT91_SOC_SAM9CN12;
 			break;
 		}
-	}
-
-	if (at91_soc_initdata.type == AT91_SOC_SAMA5D3) {
+		break;
+	case AT91_SOC_SAMA5D3:
 		switch (at91_soc_initdata.exid) {
 		case ARCH_EXID_SAMA5D31:
 			at91_soc_initdata.subtype = AT91_SOC_SAMA5D31;
@@ -168,9 +166,8 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 			at91_soc_initdata.subtype = AT91_SOC_SAMA5D36;
 			break;
 		}
-	}
-
-	if (at91_soc_initdata.type == AT91_SOC_SAMA5D4) {
+		break;
+	case AT91_SOC_SAMA5D4:
 		switch (at91_soc_initdata.exid) {
 		case ARCH_EXID_SAMA5D41:
 			at91_soc_initdata.subtype = AT91_SOC_SAMA5D41;
@@ -185,6 +182,7 @@ static void __init dbgu_soc_detect(u32 dbgu_base)
 			at91_soc_initdata.subtype = AT91_SOC_SAMA5D44;
 			break;
 		}
+		break;
 	}
 }
 
-- 
2.39.1