diff --git a/arch/mips/alchemy/db1x00/init.c b/arch/mips/alchemy/db1x00/init.c
index 847413514964f1f83e560fdb6fe53b68442de3b9..d91d334797c765f7768c4f1df292982957f1156a 100644
--- a/arch/mips/alchemy/db1x00/init.c
+++ b/arch/mips/alchemy/db1x00/init.c
@@ -57,6 +57,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/mtx-1/init.c b/arch/mips/alchemy/mtx-1/init.c
index 3bae13c2895494788a13571853ab0c5f77b42429..5e871c8d9e964d96cad974abb20743dabff72c2a 100644
--- a/arch/mips/alchemy/mtx-1/init.c
+++ b/arch/mips/alchemy/mtx-1/init.c
@@ -55,6 +55,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1000/init.c b/arch/mips/alchemy/pb1000/init.c
index 8a9c7d57208d2fbf6011e9fb5a390d0f5c62a852..640055b8ac668ec2823f5f298e97779fef8d50bb 100644
--- a/arch/mips/alchemy/pb1000/init.c
+++ b/arch/mips/alchemy/pb1000/init.c
@@ -52,6 +52,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1100/init.c b/arch/mips/alchemy/pb1100/init.c
index 7c6792308bc5b85f372af92adee39811862ad3c7..d34fbd8cc93f6f90d09caf721724a5d4a13587e3 100644
--- a/arch/mips/alchemy/pb1100/init.c
+++ b/arch/mips/alchemy/pb1100/init.c
@@ -54,7 +54,7 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1200/init.c b/arch/mips/alchemy/pb1200/init.c
index e9b2a0fd48ae702135c0af9d1e3057b5de0c8267..edd9425fa3266b6dfb5fbf78d939a1bfa472b9bc 100644
--- a/arch/mips/alchemy/pb1200/init.c
+++ b/arch/mips/alchemy/pb1200/init.c
@@ -53,6 +53,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x08000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1500/init.c b/arch/mips/alchemy/pb1500/init.c
index 3b6e395cf952019c41f999a86c6bab6a9f4236cf..b73343b9dba0628d746e7efaab38f6ac83053f41 100644
--- a/arch/mips/alchemy/pb1500/init.c
+++ b/arch/mips/alchemy/pb1500/init.c
@@ -53,6 +53,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/pb1550/init.c b/arch/mips/alchemy/pb1550/init.c
index e1055a13a1a0a108e21cd7dabf8af581226a19bc..11e7f4acd48a2cde1b8a942cc50133c9f6459a8e 100644
--- a/arch/mips/alchemy/pb1550/init.c
+++ b/arch/mips/alchemy/pb1550/init.c
@@ -53,6 +53,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x08000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }
diff --git a/arch/mips/alchemy/xxs1500/init.c b/arch/mips/alchemy/xxs1500/init.c
index 7516434760a1c18d6300c3bef3b79002385330e2..456fa142c0934ac094e733889b7c07cd2bbd0644 100644
--- a/arch/mips/alchemy/xxs1500/init.c
+++ b/arch/mips/alchemy/xxs1500/init.c
@@ -53,6 +53,6 @@ void __init prom_init(void)
 	if (!memsize_str)
 		memsize = 0x04000000;
 	else
-		strict_strtol(memsize_str, 0, &memsize);
+		strict_strtoul(memsize_str, 0, &memsize);
 	add_memory_region(0, memsize, BOOT_MEM_RAM);
 }