The second parameter of clk_get() is of type 'const char *', so use
NULL instead of the integer 0 to resolve a sparse warning:
drivers/cpufreq/armada-8k-cpufreq.c:60:40: warning: Using plain integer as NULL pointer
drivers/cpufreq/armada-8k-cpufreq.c:168:40: warning: Using plain integer as NULL pointer
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
                        continue;
                }
 
-               clk = clk_get(cpu_dev, 0);
+               clk = clk_get(cpu_dev, NULL);
                if (IS_ERR(clk)) {
                        pr_warn("Cannot get clock for CPU %d\n", cpu);
                } else {
                        continue;
                }
 
-               clk = clk_get(cpu_dev, 0);
+               clk = clk_get(cpu_dev, NULL);
 
                if (IS_ERR(clk)) {
                        pr_err("Cannot get clock for CPU %d\n", cpu);