From 0ec0c5864365f3f222e1652aca98cfbd86bae890 Mon Sep 17 00:00:00 2001
From: Moritz Fischer <moritz.fischer@ettus.com>
Date: Mon, 16 Jan 2017 09:50:45 -0800
Subject: [PATCH] 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 <michal.simek@xilinx.com>
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
---
drivers/i2c/i2c-cdns.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/i2c-cdns.c b/drivers/i2c/i2c-cdns.c
index c1d64273c5..1c9fda8f66 100644
--- 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 */
--
2.39.5