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usb: r8a66597: convert wait loop to readw_poll_timeout 

It is better to use an existing wait loop implementation.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
This commit is contained in:
Chris Brandt 2017-11-29 14:49:21 -05:00 committed by Marek Vasut
parent 335f7b1290
commit 243fd6420d
1 changed files with 5 additions and 8 deletions
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13
drivers/usb/host/r8a66597-hcd.c
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@ -10,6 +10,7 @@
#include <console.h>
#include <usb.h>
#include <asm/io.h>
#include <linux/iopoll.h>
#include "r8a66597.h"
@ -297,7 +298,6 @@ static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
int timeout = 3000;
#if defined(CONFIG_RZA_USB)
u16 dcpctr;
int timeout2 = 10000;
#endif
u16 devsel = setup->request == USB_REQ_SET_ADDRESS ? 0 : dev->devnum;
@ -308,13 +308,10 @@ static int send_setup_packet(struct r8a66597 *r8a66597, struct usb_device *dev,
#if defined(CONFIG_RZA_USB)
dcpctr = r8a66597_read(r8a66597, DCPCTR);
if ((dcpctr & PID) == PID_BUF) {
timeout2 = 10000;
while (!(dcpctr & BSTS)) {
dcpctr = r8a66597_read(r8a66597, DCPCTR);
if (timeout2-- < 0) {
printf("DCPCTR clear timeout!\n");
break;
}
if (readw_poll_timeout(r8a66597->reg + DCPCTR, dcpctr,
dcpctr & BSTS, 1000) < 0) {
printf("DCPCTR BSTS timeout!\n");
return -ETIMEDOUT;
}
}
#endif