[U-Boot] [PATCH 07/20] adc: stm32: Fix warnings when compiling with W=1

[Patrick Delaunay]

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 at st.com>

Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---

 drivers/adc/stm32-adc-core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/adc/stm32-adc-core.c b/drivers/adc/stm32-adc-core.c
index a9aa143..04b6a8a 100644
--- a/drivers/adc/stm32-adc-core.c
+++ b/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)) {
-- 
2.7.4