clk: axi-clkgen: Remove sometimes impossible check
The size of unsigned long on 64-bit architectures is equal to the
size of u64, so this check is impossible there. This throws off
static checkers:
drivers/clk/clk-axi-clkgen.c:331 axi_clkgen_recalc_rate() warn:
impossible condition '(tmp > (~0)) => (0-u64max > u64max)'
Let's change this code to use min_t() instead so that we
get the same effect on architectures where sizeof(unsigned long)
doesn't equal sizeof(u64).
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/clk-axi-clkgen.c b/drivers/clk/clk-axi-clkgen.c
index 9a0744c..3294db3 100644
--- a/drivers/clk/clk-axi-clkgen.c
+++ b/drivers/clk/clk-axi-clkgen.c
@@ -328,10 +328,7 @@
tmp = (unsigned long long)(parent_rate / d) * m;
do_div(tmp, dout);
- if (tmp > ULONG_MAX)
- return ULONG_MAX;
-
- return tmp;
+ return min_t(unsigned long long, tmp, ULONG_MAX);
}
static int axi_clkgen_enable(struct clk_hw *clk_hw)