From 0fb03656730a58fc79831c8bcc852bc9f628b960 Mon Sep 17 00:00:00 2001 From: Patrick Delaunay Date: Fri, 21 Jun 2019 15:26:44 +0200 Subject: adc: stm32-adc: Fix warnings when compiling with W=1 This patch solves the following warnings: drivers/adc/stm32-adc.c: In function 'stm32_adc_chan_of_init': warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (num_channels > adc->cfg->max_channels) { ^ Signed-off-by: Patrice Chotard Signed-off-by: Patrick Delaunay Acked-by: Fabrice Gasnier --- drivers/adc/stm32-adc.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/adc/stm32-adc.c b/drivers/adc/stm32-adc.c index e108062f2f..029338e4af 100644 --- a/drivers/adc/stm32-adc.c +++ b/drivers/adc/stm32-adc.c @@ -163,15 +163,16 @@ static int stm32_adc_chan_of_init(struct udevice *dev) struct adc_uclass_platdata *uc_pdata = dev_get_uclass_platdata(dev); struct stm32_adc *adc = dev_get_priv(dev); u32 chans[STM32_ADC_CH_MAX]; - int i, num_channels, ret; + unsigned int i, num_channels; + int ret; /* Retrieve single ended channels listed in device tree */ - num_channels = dev_read_size(dev, "st,adc-channels"); - if (num_channels < 0) { - dev_err(dev, "can't get st,adc-channels: %d\n", num_channels); - return num_channels; + ret = dev_read_size(dev, "st,adc-channels"); + if (ret < 0) { + dev_err(dev, "can't get st,adc-channels: %d\n", ret); + return ret; } - num_channels /= sizeof(u32); + num_channels = ret / sizeof(u32); if (num_channels > adc->cfg->max_channels) { dev_err(dev, "too many st,adc-channels: %d\n", num_channels); -- cgit v1.2.3