Check for the (already existing) "system_type" variable in the
get_system_type() function. If non-NULL, return it as the system type.

Signed-off-by: Paul Cercueil <[email protected]>
---

Notes:
    v2: Instead of adding a .get_system_type callback to the mips_machine
        struct, the boards now simply override the "system_type" variable
        when they want to set a custom one.
    
    v3: No change

 arch/mips/generic/proc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/mips/generic/proc.c b/arch/mips/generic/proc.c
index 4c992809cc3f..cce2fde219a3 100644
--- a/arch/mips/generic/proc.c
+++ b/arch/mips/generic/proc.c
@@ -8,11 +8,16 @@
 
 #include <asm/bootinfo.h>
 
+char *system_type;
+
 const char *get_system_type(void)
 {
        const char *str;
        int err;
 
+       if (system_type)
+               return system_type;
+
        err = of_property_read_string(of_root, "model", &str);
        if (!err)
                return str;
-- 
2.28.0

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