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

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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
This commit is contained in:
Moritz Fischer 2017-01-16 09:50:45 -08:00 • committed by Heiko Schocher
parent 5e42985208
commit 0ec0c58643
1 changed files with 1 additions and 1 deletions
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2
drivers/i2c/i2c-cdns.c
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@ -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 */