[PATCH 08/13] i2c: nomadik: replace jiffies by ktime for FIFO flushing timeout
From: Théo Lebrun <theo.lebrun@bootlin.com>
Date: 2024-02-15 16:52:45
Also in:
linux-devicetree, linux-i2c, linux-mips, lkml
Subsystem:
arm/nomadik/ux500 architectures, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Linus Walleij, Andi Shyti, Linus Torvalds
The FIFO flush function uses a jiffies amount to detect timeouts as the flushing is async. Replace with ktime to get more accurate precision and support short timeouts. Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com> --- drivers/i2c/busses/i2c-nomadik.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index e68b8e0d7919..afd54999bbbb 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c@@ -219,8 +219,8 @@ static inline void i2c_clr_bit(void __iomem *reg, u32 mask) static int flush_i2c_fifo(struct nmk_i2c_dev *priv) { #define LOOP_ATTEMPTS 10 + ktime_t timeout; int i; - unsigned long timeout; /* * flush the transmit and receive FIFO. The flushing
@@ -232,9 +232,9 @@ static int flush_i2c_fifo(struct nmk_i2c_dev *priv) writel((I2C_CR_FTX | I2C_CR_FRX), priv->virtbase + I2C_CR); for (i = 0; i < LOOP_ATTEMPTS; i++) { - timeout = jiffies + priv->adap.timeout; + timeout = ktime_add_us(ktime_get(), priv->timeout_usecs); - while (!time_after(jiffies, timeout)) { + while (ktime_after(timeout, ktime_get())) { if ((readl(priv->virtbase + I2C_CR) & (I2C_CR_FTX | I2C_CR_FRX)) == 0) return 0;
--
2.43.1
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