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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>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Petr Mladek <pmladek@suse.com>
Subject: [PATCH v3 02/11] usb: early: ehci-dbgp: convert to readl_poll_timeout_atomic()
Date: Sat, 22 Aug 2020 16:05:44 +0800	[thread overview]
Message-ID: <1598083553-31896-2-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1598083553-31896-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v3: no changes
---
 drivers/usb/early/ehci-dbgp.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index b075dbf..45b42d8 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -15,6 +15,7 @@
 #include <linux/console.h>
 #include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/iopoll.h>
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
 #include <linux/usb/ch9.h>
@@ -161,17 +162,11 @@ static inline u32 dbgp_pid_read_update(u32 x, u32 tok)
 static int dbgp_wait_until_complete(void)
 {
 	u32 ctrl;
-	int loop = DBGP_TIMEOUT;
-
-	do {
-		ctrl = readl(&ehci_debug->control);
-		/* Stop when the transaction is finished */
-		if (ctrl & DBGP_DONE)
-			break;
-		udelay(1);
-	} while (--loop > 0);
+	int ret;
 
-	if (!loop)
+	ret = readl_poll_timeout_atomic(&ehci_debug->control, ctrl,
+				(ctrl & DBGP_DONE), 1, DBGP_TIMEOUT);
+	if (ret)
 		return -DBGP_TIMEOUT;
 
 	/*
-- 
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>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	Petr Mladek <pmladek@suse.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	linux-mediatek@lists.infradead.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 02/11] usb: early: ehci-dbgp: convert to readl_poll_timeout_atomic()
Date: Sat, 22 Aug 2020 16:05:44 +0800	[thread overview]
Message-ID: <1598083553-31896-2-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1598083553-31896-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v3: no changes
---
 drivers/usb/early/ehci-dbgp.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index b075dbf..45b42d8 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -15,6 +15,7 @@
 #include <linux/console.h>
 #include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/iopoll.h>
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
 #include <linux/usb/ch9.h>
@@ -161,17 +162,11 @@ static inline u32 dbgp_pid_read_update(u32 x, u32 tok)
 static int dbgp_wait_until_complete(void)
 {
 	u32 ctrl;
-	int loop = DBGP_TIMEOUT;
-
-	do {
-		ctrl = readl(&ehci_debug->control);
-		/* Stop when the transaction is finished */
-		if (ctrl & DBGP_DONE)
-			break;
-		udelay(1);
-	} while (--loop > 0);
+	int ret;
 
-	if (!loop)
+	ret = readl_poll_timeout_atomic(&ehci_debug->control, ctrl,
+				(ctrl & DBGP_DONE), 1, DBGP_TIMEOUT);
+	if (ret)
 		return -DBGP_TIMEOUT;
 
 	/*
-- 
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>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	Petr Mladek <pmladek@suse.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	linux-mediatek@lists.infradead.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 02/11] usb: early: ehci-dbgp: convert to readl_poll_timeout_atomic()
Date: Sat, 22 Aug 2020 16:05:44 +0800	[thread overview]
Message-ID: <1598083553-31896-2-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1598083553-31896-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Petr Mladek <pmladek@suse.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v3: no changes
---
 drivers/usb/early/ehci-dbgp.c | 15 +++++----------
 1 file changed, 5 insertions(+), 10 deletions(-)

diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index b075dbf..45b42d8 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -15,6 +15,7 @@
 #include <linux/console.h>
 #include <linux/errno.h>
 #include <linux/init.h>
+#include <linux/iopoll.h>
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
 #include <linux/usb/ch9.h>
@@ -161,17 +162,11 @@ static inline u32 dbgp_pid_read_update(u32 x, u32 tok)
 static int dbgp_wait_until_complete(void)
 {
 	u32 ctrl;
-	int loop = DBGP_TIMEOUT;
-
-	do {
-		ctrl = readl(&ehci_debug->control);
-		/* Stop when the transaction is finished */
-		if (ctrl & DBGP_DONE)
-			break;
-		udelay(1);
-	} while (--loop > 0);
+	int ret;
 
-	if (!loop)
+	ret = readl_poll_timeout_atomic(&ehci_debug->control, ctrl,
+				(ctrl & DBGP_DONE), 1, DBGP_TIMEOUT);
+	if (ret)
 		return -DBGP_TIMEOUT;
 
 	/*
-- 
1.9.1
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-08-22  8:09 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-22  8:05 [PATCH v3 01/11] usb: early: convert to readl_poll_timeout_atomic() Chunfeng Yun
2020-08-22  8:05 ` Chunfeng Yun
2020-08-22  8:05 ` Chunfeng Yun
2020-08-22  8:05 ` Chunfeng Yun [this message]
2020-08-22  8:05   ` [PATCH v3 02/11] usb: early: ehci-dbgp: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 03/11] usb: pci-quirks: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 04/11] usb: xhci-rcar: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 05/11] usb: oxu210hp-hcd: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 06/11] usb: fotg210-hcd: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 07/11] usb: isp1760-hcd: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 08/11] usb: phy-ulpi-viewport: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 09/11] usb: phy: phy-mv-usb: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 10/11] usb: udc: net2280: " Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05 ` [PATCH v3 11/11] iopoll: update kerneldoc of read_poll_timeout_atomic() Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-22  8:05   ` Chunfeng Yun
2020-08-28  7:53 ` [PATCH v3 01/11] usb: early: convert to readl_poll_timeout_atomic() Greg Kroah-Hartman
2020-08-28  7:53   ` Greg Kroah-Hartman
2020-08-28  7:53   ` Greg Kroah-Hartman

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