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Subject[PATCH 1/3] spi: omap2-mcspi: Switch to readl_poll_timeout()
Date
Use standard readl_poll_timeout() macro for polling on status bits.

Signed-off-by: Vignesh R <vigneshr@ti.com>
---
drivers/spi/spi-omap2-mcspi.c | 17 ++++-------------
1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 508c61c669e7..985f00d8a964 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -33,6 +33,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/gcd.h>
+#include <linux/iopoll.h>

#include <linux/spi/spi.h>
#include <linux/gpio.h>
@@ -353,19 +354,9 @@ static void omap2_mcspi_set_fifo(const struct spi_device *spi,

static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit)
{
- unsigned long timeout;
-
- timeout = jiffies + msecs_to_jiffies(1000);
- while (!(readl_relaxed(reg) & bit)) {
- if (time_after(jiffies, timeout)) {
- if (!(readl_relaxed(reg) & bit))
- return -ETIMEDOUT;
- else
- return 0;
- }
- cpu_relax();
- }
- return 0;
+ u32 val;
+
+ return readl_poll_timeout(reg, val, val & bit, 1, MSEC_PER_SEC);
}

static void omap2_mcspi_rx_callback(void *data)
--
2.19.1
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