i2c: i2c-cdns: Reorder timeout loop for interrupt waiting

Reorder the timeout loop such that we first check if the
condition is already true, and then call udelay() so if
the condition is already true, break early.

Reviewed-by: Michal Simek <[email protected]>
Signed-off-by: Moritz Fischer <[email protected]>
Cc: Heiko Schocher <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: [email protected]

diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c
index c1d64273c50bca27d125e6c9fbee117e0d48a8ff..1c9fda8f66767bd13d18ac48e4639e3a303500e9 100644 (file)
--- a/drivers/i2c/i2c-cdns.c
+++ b/drivers/i2c/i2c-cdns.c
@@ -130,10 +130,10 @@ static u32 cdns_i2c_wait(struct cdns_i2c_regs *cdns_i2c, u32 mask)
        int timeout, int_status;
 
        for (timeout = 0; timeout < 100; timeout++) {
-               udelay(100);
                int_status = readl(&cdns_i2c->interrupt_status);
                if (int_status & mask)
                        break;
+               udelay(100);
        }
 
        /* Clear interrupt status flags */