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spi: stm32_qspi: avoid warnings when building with W=1 option

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This patch solves warnings detected by setting W=1 when building.

Warnings type detected:
 - [-Wtype-limits]
 - [-Wsign-compare]

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This commit is contained in:
Patrick Delaunay 2019-06-21 15:26:55 +02:00
parent d99ea13cdf
commit 1ddf544e63
1 changed files with 13 additions and 11 deletions
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18
drivers/spi/stm32_qspi.c
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@ -361,9 +361,9 @@ static int stm32_qspi_probe(struct udevice *bus)
}
priv->clock_rate = clk_get_rate(&clk);
if (priv->clock_rate < 0) {
if (!priv->clock_rate) {
clk_disable(&clk);
return priv->clock_rate;
return -EINVAL;
}
ret = reset_get_by_index(bus, 0, &reset_ctl);
@ -395,14 +395,15 @@ static int stm32_qspi_claim_bus(struct udevice *dev)
{
struct stm32_qspi_priv *priv = dev_get_priv(dev->parent);
struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev);
int slave_cs = slave_plat->cs;
if (slave_plat->cs >= STM32_QSPI_MAX_CHIP)
if (slave_cs >= STM32_QSPI_MAX_CHIP)
return -ENODEV;
if (priv->cs_used != slave_plat->cs) {
struct stm32_qspi_flash *flash = &priv->flash[slave_plat->cs];
if (priv->cs_used != slave_cs) {
struct stm32_qspi_flash *flash = &priv->flash[slave_cs];
priv->cs_used = slave_plat->cs;
priv->cs_used = slave_cs;
if (flash->initialized) {
/* Set the configuration: speed + cs */
@ -444,11 +445,12 @@ static int stm32_qspi_set_speed(struct udevice *bus, uint speed)
int ret;
if (speed > 0) {
prescaler = 0;
if (qspi_clk) {
prescaler = DIV_ROUND_UP(qspi_clk, speed) - 1;
if (prescaler > 255)
prescaler = 255;
else if (prescaler < 0)
prescaler = 0;
}
}
csht = DIV_ROUND_UP((5 * qspi_clk) / (prescaler + 1), 100000000);