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serial: stm32: Fix warnings when compiling with W=1

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This patch solves the following warnings:

drivers/serial/serial_stm32.c: In function 'stm32_serial_probe':
warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
  if (plat->clock_rate < 0) {
                       ^

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-06-21 15:26:41 +02:00
parent 8e1947774e
commit 585289b4fc
1 changed files with 2 additions and 2 deletions
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4
drivers/serial/serial_stm32.c
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@ -195,9 +195,9 @@ static int stm32_serial_probe(struct udevice *dev)
}
plat->clock_rate = clk_get_rate(&clk);
if (plat->clock_rate < 0) {
if (!plat->clock_rate) {
clk_disable(&clk);
return plat->clock_rate;
return -EINVAL;
};
_stm32_serial_init(plat->base, plat->uart_info);