[U-Boot] [PATCH 20/20] spi: stm32: Fix warnings when compiling with W=1
Patrick Delaunay
patrick.delaunay at st.com
Fri Jun 21 13:26:58 UTC 2019
This patch solves the following warnings:
drivers/spi/stm32_spi.c: In function 'stm32_spi_write_txfifo':
drivers/spi/stm32_spi.c:116:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (priv->tx_len >= sizeof(u32) &&
^~
drivers/spi/stm32_spi.c:122:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
} else if (priv->tx_len >= sizeof(u16) &&
^~
drivers/spi/stm32_spi.c: In function 'stm32_spi_read_rxfifo':
drivers/spi/stm32_spi.c:150:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u32) || (sr & SPI_SR_RXWNE))) {
^~
drivers/spi/stm32_spi.c:156:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u16) ||
^~
drivers/core/simple-bus.c:15:12: warning: no previous prototype for 'simple_bus_translate' [-Wmissing-prototypes]
fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
^~~~~~~~~~~~~~~~~~~~
drivers/spi/stm32_spi.c: In function 'stm32_spi_set_speed':
drivers/spi/stm32_spi.c:335:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
div > STM32_MBR_DIV_MAX)
^
drivers/spi/stm32_spi.c:344:19: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if ((mbrdiv - 1) < 0)
^
drivers/spi/stm32_spi.c: In function 'stm32_spi_probe':
drivers/spi/stm32_spi.c:531:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < ARRAY_SIZE(priv->cs_gpios); i++) {
^
Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
drivers/spi/stm32_spi.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/spi/stm32_spi.c b/drivers/spi/stm32_spi.c
index 34b2175..75b6006 100644
--- a/drivers/spi/stm32_spi.c
+++ b/drivers/spi/stm32_spi.c
@@ -99,8 +99,8 @@ struct stm32_spi_priv {
unsigned int cur_bpw;
unsigned int cur_hz;
unsigned int cur_xferlen; /* current transfer length in bytes */
- int tx_len; /* number of data to be written in bytes */
- int rx_len; /* number of data to be read in bytes */
+ unsigned int tx_len; /* number of data to be written in bytes */
+ unsigned int rx_len; /* number of data to be read in bytes */
const void *tx_buf; /* data to be written, or NULL */
void *rx_buf; /* data to be read, or NULL */
u32 cur_mode;
@@ -322,7 +322,8 @@ static int stm32_spi_set_fthlv(struct udevice *dev, u32 xfer_len)
static int stm32_spi_set_speed(struct udevice *bus, uint hz)
{
struct stm32_spi_priv *priv = dev_get_priv(bus);
- u32 div, mbrdiv;
+ u32 mbrdiv;
+ long div;
debug("%s: hz=%d\n", __func__, hz);
@@ -341,7 +342,7 @@ static int stm32_spi_set_speed(struct udevice *bus, uint hz)
else
mbrdiv = fls(div) - 1;
- if ((mbrdiv - 1) < 0)
+ if (!mbrdiv)
return -EINVAL;
clrsetbits_le32(priv->base + STM32_SPI_CFG1, SPI_CFG1_MBR,
@@ -481,7 +482,7 @@ static int stm32_spi_probe(struct udevice *dev)
struct stm32_spi_priv *priv = dev_get_priv(dev);
unsigned long clk_rate;
int ret;
- int i;
+ unsigned int i;
priv->base = dev_remap_addr(dev);
if (!priv->base)
--
2.7.4
More information about the U-Boot
mailing list