All of lore.kernel.org
 help / color / mirror / Atom feed
From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Felipe Balbi <balbi@kernel.org>
Cc: Mathias Nyman <mathias.nyman@intel.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Sumit Garg <sumit.garg@linaro.org>,
	Lee Jones <lee.jones@linaro.org>, Jann Horn <jannh@google.com>,
	Jason Yan <yanaijie@huawei.com>, Arnd Bergmann <arnd@arndb.de>,
	Chuhong Yuan <hslester96@gmail.com>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	"Ben Dooks (Codethink)" <ben.dooks@codethink.co.uk>,
	Saurav Girepunje <saurav.girepunje@gmail.com>,
	<linux-usb@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	Daniel Thompson <daniel.thompson@linaro.org>
Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic()
Date: Mon, 21 Sep 2020 14:13:29 +0800	[thread overview]
Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v4: no changes
---
 drivers/usb/host/oxu210hp-hcd.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index cfa7dd2..27dbbe1 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -24,6 +24,7 @@
 #include <linux/moduleparam.h>
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 
 #include <asm/irq.h>
 #include <asm/unaligned.h>
@@ -748,18 +749,16 @@ static int handshake(struct oxu_hcd *oxu, void __iomem *ptr,
 					u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
 
-	do {
-		result = readl(ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	ret = readl_poll_timeout_atomic(ptr, result,
+					((result & mask) == done ||
+					 result == U32_MAX),
+					1, usec);
+	if (result == U32_MAX)		/* card removed */
+		return -ENODEV;
+
+	return ret;
 }
 
 /* Force HC to halt state from unknown (EHCI spec section 2.3) */
-- 
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>,
	Felipe Balbi <balbi@kernel.org>
Cc: Sumit Garg <sumit.garg@linaro.org>,
	Daniel Thompson <daniel.thompson@linaro.org>,
	linux-usb@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Jann Horn <jannh@google.com>, Jason Yan <yanaijie@huawei.com>,
	Chuhong Yuan <hslester96@gmail.com>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-kernel@vger.kernel.org,
	Saurav Girepunje <saurav.girepunje@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	"Ben Dooks \(Codethink\)" <ben.dooks@codethink.co.uk>,
	linux-mediatek@lists.infradead.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic()
Date: Mon, 21 Sep 2020 14:13:29 +0800	[thread overview]
Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v4: no changes
---
 drivers/usb/host/oxu210hp-hcd.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index cfa7dd2..27dbbe1 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -24,6 +24,7 @@
 #include <linux/moduleparam.h>
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 
 #include <asm/irq.h>
 #include <asm/unaligned.h>
@@ -748,18 +749,16 @@ static int handshake(struct oxu_hcd *oxu, void __iomem *ptr,
 					u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
 
-	do {
-		result = readl(ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	ret = readl_poll_timeout_atomic(ptr, result,
+					((result & mask) == done ||
+					 result == U32_MAX),
+					1, usec);
+	if (result == U32_MAX)		/* card removed */
+		return -ENODEV;
+
+	return ret;
 }
 
 /* Force HC to halt state from unknown (EHCI spec section 2.3) */
-- 
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>,
	Felipe Balbi <balbi@kernel.org>
Cc: Sumit Garg <sumit.garg@linaro.org>,
	Daniel Thompson <daniel.thompson@linaro.org>,
	linux-usb@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Jann Horn <jannh@google.com>, Jason Yan <yanaijie@huawei.com>,
	Chuhong Yuan <hslester96@gmail.com>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-kernel@vger.kernel.org,
	Saurav Girepunje <saurav.girepunje@gmail.com>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	"Ben Dooks \(Codethink\)" <ben.dooks@codethink.co.uk>,
	linux-mediatek@lists.infradead.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Lee Jones <lee.jones@linaro.org>,
	Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 05/11] usb: oxu210hp-hcd: convert to readl_poll_timeout_atomic()
Date: Mon, 21 Sep 2020 14:13:29 +0800	[thread overview]
Message-ID: <1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com>

Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2~v4: no changes
---
 drivers/usb/host/oxu210hp-hcd.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c
index cfa7dd2..27dbbe1 100644
--- a/drivers/usb/host/oxu210hp-hcd.c
+++ b/drivers/usb/host/oxu210hp-hcd.c
@@ -24,6 +24,7 @@
 #include <linux/moduleparam.h>
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 
 #include <asm/irq.h>
 #include <asm/unaligned.h>
@@ -748,18 +749,16 @@ static int handshake(struct oxu_hcd *oxu, void __iomem *ptr,
 					u32 mask, u32 done, int usec)
 {
 	u32 result;
+	int ret;
 
-	do {
-		result = readl(ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay(1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
+	ret = readl_poll_timeout_atomic(ptr, result,
+					((result & mask) == done ||
+					 result == U32_MAX),
+					1, usec);
+	if (result == U32_MAX)		/* card removed */
+		return -ENODEV;
+
+	return ret;
 }
 
 /* Force HC to halt state from unknown (EHCI spec section 2.3) */
-- 
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:[~2020-09-21  6:17 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-21  6:13 [PATCH v4 01/11] usb: early: convert to readl_poll_timeout_atomic() Chunfeng Yun
2020-09-21  6:13 ` Chunfeng Yun
2020-09-21  6:13 ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 02/11] usb: early: ehci-dbgp: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 03/11] usb: pci-quirks: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 04/11] usb: xhci-rcar: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-23  8:47   ` Yoshihiro Shimoda
2020-09-23  8:47     ` Yoshihiro Shimoda
2020-09-23  8:47     ` Yoshihiro Shimoda
2020-09-23  8:53     ` Chunfeng Yun
2020-09-23  8:53       ` Chunfeng Yun
2020-09-23  8:53       ` Chunfeng Yun
2020-09-21  6:13 ` Chunfeng Yun [this message]
2020-09-21  6:13   ` [PATCH v4 05/11] usb: oxu210hp-hcd: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 06/11] usb: fotg210-hcd: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 07/11] usb: isp1760-hcd: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 08/11] usb: phy-ulpi-viewport: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 09/11] usb: phy: phy-mv-usb: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 10/11] usb: udc: net2280: " Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13 ` [PATCH v4 11/11] iopoll: update kerneldoc of read_poll_timeout_atomic() Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun
2020-09-21  6:13   ` Chunfeng Yun

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1600668815-12135-5-git-send-email-chunfeng.yun@mediatek.com \
    --to=chunfeng.yun@mediatek.com \
    --cc=arnd@arndb.de \
    --cc=balbi@kernel.org \
    --cc=ben.dooks@codethink.co.uk \
    --cc=daniel.thompson@linaro.org \
    --cc=ebiederm@xmission.com \
    --cc=gregkh@linuxfoundation.org \
    --cc=gustavoars@kernel.org \
    --cc=hslester96@gmail.com \
    --cc=jannh@google.com \
    --cc=lee.jones@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=mathias.nyman@intel.com \
    --cc=matthias.bgg@gmail.com \
    --cc=saurav.girepunje@gmail.com \
    --cc=sergei.shtylyov@cogentembedded.com \
    --cc=sumit.garg@linaro.org \
    --cc=yanaijie@huawei.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.