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path: root/drivers/i2c/busses/i2c-st.c
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Diffstat (limited to 'drivers/i2c/busses/i2c-st.c')
-rw-r--r--drivers/i2c/busses/i2c-st.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/i2c/busses/i2c-st.c b/drivers/i2c/busses/i2c-st.c
index 750fff3d2389..97d70e667227 100644
--- a/drivers/i2c/busses/i2c-st.c
+++ b/drivers/i2c/busses/i2c-st.c
@@ -13,6 +13,7 @@
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/io.h>
+#include <linux/minmax.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
@@ -151,7 +152,7 @@ struct st_i2c_timings {
/**
* struct st_i2c_client - client specific data
* @addr: 8-bit target addr, including r/w bit
- * @count: number of bytes to be transfered
+ * @count: number of bytes to be transferred
* @xfered: number of bytes already transferred
* @buf: data buffer
* @result: result of the transfer
@@ -422,12 +423,8 @@ static void st_i2c_wr_fill_tx_fifo(struct st_i2c_dev *i2c_dev)
tx_fstat = readl_relaxed(i2c_dev->base + SSC_TX_FSTAT);
tx_fstat &= SSC_TX_FSTAT_STATUS;
- if (c->count < (SSC_TXFIFO_SIZE - tx_fstat))
- i = c->count;
- else
- i = SSC_TXFIFO_SIZE - tx_fstat;
-
- for (; i > 0; i--, c->count--, c->buf++)
+ for (i = min(c->count, SSC_TXFIFO_SIZE - tx_fstat);
+ i > 0; i--, c->count--, c->buf++)
st_i2c_write_tx_fifo(i2c_dev, *c->buf);
}
@@ -439,7 +436,7 @@ static void st_i2c_wr_fill_tx_fifo(struct st_i2c_dev *i2c_dev)
* This functions fills the Tx FIFO with fixed pattern when
* in read mode to trigger clock.
*/
-static void st_i2c_rd_fill_tx_fifo(struct st_i2c_dev *i2c_dev, int max)
+static void st_i2c_rd_fill_tx_fifo(struct st_i2c_dev *i2c_dev, u32 max)
{
struct st_i2c_client *c = &i2c_dev->client;
u32 tx_fstat, sta;
@@ -452,12 +449,8 @@ static void st_i2c_rd_fill_tx_fifo(struct st_i2c_dev *i2c_dev, int max)
tx_fstat = readl_relaxed(i2c_dev->base + SSC_TX_FSTAT);
tx_fstat &= SSC_TX_FSTAT_STATUS;
- if (max < (SSC_TXFIFO_SIZE - tx_fstat))
- i = max;
- else
- i = SSC_TXFIFO_SIZE - tx_fstat;
-
- for (; i > 0; i--, c->xfered++)
+ for (i = min(max, SSC_TXFIFO_SIZE - tx_fstat);
+ i > 0; i--, c->xfered++)
st_i2c_write_tx_fifo(i2c_dev, 0xff);
}