i2c: ocores: refactor setup for polling

By properly setting up the algorithm at probe time, we can skip the
check at every transfer. This allows us to get rid of the flags
completely.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Acked-by: Peter Korsgaard <peter@korsgaard.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c
index 4e1a077fb688116e36ff82ce589751e6b9cc22f7..1b99f467aae0042f91b9957937ea6f94d729f69a 100644 (file)
--- a/drivers/i2c/busses/i2c-ocores.c
+++ b/drivers/i2c/busses/i2c-ocores.c
@@ -26,8 +26,6 @@
 #include <linux/spinlock.h>
 #include <linux/jiffies.h>
 
-#define OCORES_FLAG_POLL BIT(0)
-
 /*
  * 'process_lock' exists because ocores_process() and ocores_process_timeout()
  * can't run in parallel.
@@ -37,7 +35,6 @@ struct ocores_i2c {
        int iobase;
        u32 reg_shift;
        u32 reg_io_width;
-       unsigned long flags;
        wait_queue_head_t wait;
        struct i2c_adapter adap;
        struct i2c_msg *msg;
@@ -403,11 +400,7 @@ static int ocores_xfer_polling(struct i2c_adapter *adap,
 static int ocores_xfer(struct i2c_adapter *adap,
                       struct i2c_msg *msgs, int num)
 {
-       struct ocores_i2c *i2c = i2c_get_adapdata(adap);
-
-       if (i2c->flags & OCORES_FLAG_POLL)
-               return ocores_xfer_polling(adap, msgs, num);
-       return ocores_xfer_core(i2c, msgs, num, false);
+       return ocores_xfer_core(i2c_get_adapdata(adap), msgs, num, false);
 }
 
 static int ocores_init(struct device *dev, struct ocores_i2c *i2c)
@@ -447,7 +440,7 @@ static u32 ocores_func(struct i2c_adapter *adap)
        return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
 }
 
-static const struct i2c_algorithm ocores_algorithm = {
+static struct i2c_algorithm ocores_algorithm = {
        .master_xfer = ocores_xfer,
        .functionality = ocores_func,
 };
@@ -673,13 +666,13 @@ static int ocores_i2c_probe(struct platform_device *pdev)
 
        irq = platform_get_irq(pdev, 0);
        if (irq == -ENXIO) {
-               i2c->flags |= OCORES_FLAG_POLL;
+               ocores_algorithm.master_xfer = ocores_xfer_polling;
        } else {
                if (irq < 0)
                        return irq;
        }
 
-       if (!(i2c->flags & OCORES_FLAG_POLL)) {
+       if (ocores_algorithm.master_xfer != ocores_xfer_polling) {
                ret = devm_request_irq(&pdev->dev, irq, ocores_isr, 0,
                                       pdev->name, i2c);
                if (ret) {