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

This patch solves the following warnings:

drivers/adc/stm32-adc-core.c: In function 'stm32h7_adc_clk_sel':
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
                 ^
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
                ^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Patrick Delaunay 5 years ago
parent
commit
c0d7f1fbad
1 changed files with 2 additions and 1 deletions
  1. 2 1
      drivers/adc/stm32-adc-core.c

+ 2 - 1
drivers/adc/stm32-adc-core.c

@@ -60,7 +60,8 @@ static int stm32h7_adc_clk_sel(struct udevice *dev,
 {
 	u32 ckmode, presc;
 	unsigned long rate;
-	int i, div;
+	unsigned int i;
+	int div;
 
 	/* stm32h7 bus clock is common for all ADC instances (mandatory) */
 	if (!clk_valid(&common->bclk)) {