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From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@kernel.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	Lee Jones <lee.jones@linaro.org>
Subject: [PATCH 07/10] usb: isp1760-hcd: convert to readl_poll_timeout_atomic()
Date: Wed, 19 Aug 2020 20:41:02 +0800	[thread overview]
Message-ID: <1597840865-26631-7-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1597840865-26631-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index dd74ab7a..33ae656 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -22,6 +22,7 @@
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/mm.h>
 #include <linux/timer.h>
 #include <asm/unaligned.h>
@@ -380,18 +381,15 @@ static int handshake(struct usb_hcd *hcd, u32 reg,
 		      u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
+
+	ret = readl_poll_timeout_atomic(hcd->regs + reg, result,
+					((result & mask) == done ||
+					 result == U32_MAX), 1, usec);
+	if (result == U32_MAX)
+		return -ENODEV;
 
-	do {
-		result = reg_read32(hcd->regs, reg);
-		if (result == ~0)
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	return ret;
 }
 
 /* reset a non-running (STS_HALT == 1) controller */
-- 
1.9.1

WARNING: multiple messages have this Message-ID (diff)
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@kernel.org>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	linux-mediatek@lists.infradead.org,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 07/10] usb: isp1760-hcd: convert to readl_poll_timeout_atomic()
Date: Wed, 19 Aug 2020 20:41:02 +0800	[thread overview]
Message-ID: <1597840865-26631-7-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1597840865-26631-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index dd74ab7a..33ae656 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -22,6 +22,7 @@
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/mm.h>
 #include <linux/timer.h>
 #include <asm/unaligned.h>
@@ -380,18 +381,15 @@ static int handshake(struct usb_hcd *hcd, u32 reg,
 		      u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
+
+	ret = readl_poll_timeout_atomic(hcd->regs + reg, result,
+					((result & mask) == done ||
+					 result == U32_MAX), 1, usec);
+	if (result == U32_MAX)
+		return -ENODEV;
 
-	do {
-		result = reg_read32(hcd->regs, reg);
-		if (result == ~0)
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	return ret;
 }
 
 /* reset a non-running (STS_HALT == 1) controller */
-- 
1.9.1
_______________________________________________
Linux-mediatek mailing list
Linux-mediatek@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-mediatek

WARNING: multiple messages have this Message-ID (diff)
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Felipe Balbi <balbi@kernel.org>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	linux-mediatek@lists.infradead.org,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 07/10] usb: isp1760-hcd: convert to readl_poll_timeout_atomic()
Date: Wed, 19 Aug 2020 20:41:02 +0800	[thread overview]
Message-ID: <1597840865-26631-7-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1597840865-26631-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
 drivers/usb/isp1760/isp1760-hcd.c | 20 +++++++++-----------
 1 file changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index dd74ab7a..33ae656 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -22,6 +22,7 @@
 #include <linux/debugfs.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/mm.h>
 #include <linux/timer.h>
 #include <asm/unaligned.h>
@@ -380,18 +381,15 @@ static int handshake(struct usb_hcd *hcd, u32 reg,
 		      u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
+
+	ret = readl_poll_timeout_atomic(hcd->regs + reg, result,
+					((result & mask) == done ||
+					 result == U32_MAX), 1, usec);
+	if (result == U32_MAX)
+		return -ENODEV;
 
-	do {
-		result = reg_read32(hcd->regs, reg);
-		if (result == ~0)
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	return ret;
 }
 
 /* reset a non-running (STS_HALT == 1) controller */
-- 
1.9.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2020-08-19 12:43 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 12:40 [PATCH 01/10] usb: early: convert to readl_poll_timeout_atomic() Chunfeng Yun
2020-08-19 12:40 ` Chunfeng Yun
2020-08-19 12:40 ` Chunfeng Yun
2020-08-19 12:40 ` [PATCH 02/10] usb: early: ehci-dbgp: " Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:40 ` [PATCH 03/10] usb: pci-quirks: " Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:40 ` [PATCH 04/10] usb: xhci-rcar: " Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:40   ` Chunfeng Yun
2020-08-19 12:41 ` [PATCH 05/10] usb: oxu210hp-hcd: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41 ` [PATCH 06/10] usb: fotg210-hcd: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41 ` Chunfeng Yun [this message]
2020-08-19 12:41   ` [PATCH 07/10] usb: isp1760-hcd: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41 ` [PATCH 08/10] usb: phy-ulpi-viewport: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41 ` [PATCH 09/10] usb: phy: phy-mv-usb: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41 ` [PATCH 10/10] usb: udc: net2280: " Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 12:41   ` Chunfeng Yun
2020-08-19 14:59   ` Alan Stern
2020-08-19 14:59     ` Alan Stern
2020-08-19 14:59     ` Alan Stern
2020-08-20  1:57     ` Chunfeng Yun
2020-08-20  1:57       ` Chunfeng Yun
2020-08-20  1:57       ` Chunfeng Yun

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