Getting warning C209 as 'too few actual parameters'

[angiey]

As i'm using Keil IDE, i'm getting the warning as too few actual parameters,& is there any alternative for uint8_t since in my program i have not used
stdint.h header file so when i initialised uint8_t to unsigned char typedef it got compiled with the above warning msg..
Help me in solving this warning..

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Code C - [expand]
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typedef unsigned char uint8_t;
 
void set_output_v(uint8_t v)
{
P2 = (P2 & 0xF0) | v;
}

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