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net: phy: mdio-mux-bcm-iproc: use readl_poll_timeout() to simplify code

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use readl_poll_timeout() to replace the poll codes for simplify
iproc_mdio_wait_for_idle() function

Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dejin Zheng 2020-03-24 19:26:47 +08:00 committed by David S. Miller
parent 5ef8c66541
commit c9c1fd62b0
1 changed files with 4 additions and 10 deletions
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14
drivers/net/phy/mdio-mux-bcm-iproc.c
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@ -10,6 +10,7 @@
#include <linux/phy.h>
#include <linux/mdio-mux.h>
#include <linux/delay.h>
#include <linux/iopoll.h>
#define MDIO_RATE_ADJ_EXT_OFFSET 0x000
#define MDIO_RATE_ADJ_INT_OFFSET 0x004
@ -78,18 +79,11 @@ static void mdio_mux_iproc_config(struct iproc_mdiomux_desc *md)
static int iproc_mdio_wait_for_idle(void __iomem *base, bool result)
{
unsigned int timeout = 1000; /* loop for 1s */
u32 val;
do {
val = readl(base + MDIO_STAT_OFFSET);
if ((val & MDIO_STAT_DONE) == result)
return 0;
usleep_range(1000, 2000);
} while (timeout--);
return -ETIMEDOUT;
return readl_poll_timeout(base + MDIO_STAT_OFFSET, val,
(val & MDIO_STAT_DONE) == result,
2000, 1000000);
}
/* start_miim_ops- Program and start MDIO transaction over mdio bus.