From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Mathias Nyman <mathias.nyman@intel.com>,
Felipe Balbi <balbi@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Douglas Anderson <dianders@chromium.org>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Daniel Thompson <daniel.thompson@linaro.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Lee Jones <lee.jones@linaro.org>,
Sumit Garg <sumit.garg@linaro.org>, Jann Horn <jannh@google.com>,
Arnd Bergmann <arnd@arndb.de>, Jason Yan <yanaijie@huawei.com>,
Chuhong Yuan <hslester96@gmail.com>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
Ben Dooks <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>
Subject: [PATCH RESEND v3 07/11] usb: isp1760-hcd: convert to readl_poll_timeout_atomic()
Date: Thu, 10 Sep 2020 16:21:48 +0800 [thread overview]
Message-ID: <1599726112-4439-7-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1599726112-4439-1-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~v3: no changes
---
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
next prev parent reply other threads:[~2020-09-10 8:31 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-10 8:21 [PATCH RESEND v3 01/11] usb: early: convert to readl_poll_timeout_atomic() Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 02/11] usb: early: ehci-dbgp: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 03/11] usb: pci-quirks: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 04/11] usb: xhci-rcar: " Chunfeng Yun
2020-09-10 12:56 ` Yoshihiro Shimoda
2020-09-11 2:21 ` Chunfeng Yun
2020-09-10 13:12 ` Daniel Thompson
2020-09-11 2:33 ` Chunfeng Yun
2020-09-11 3:13 ` Yoshihiro Shimoda
2020-09-11 4:12 ` Chunfeng Yun
2020-09-11 4:57 ` Yoshihiro Shimoda
2020-09-11 11:46 ` Chunfeng Yun
2020-09-11 8:34 ` Daniel Thompson
2020-09-11 9:27 ` Chunfeng Yun
2020-09-11 9:48 ` Daniel Thompson
2020-09-11 9:58 ` Yoshihiro Shimoda
2020-09-10 8:21 ` [PATCH RESEND v3 05/11] usb: oxu210hp-hcd: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 06/11] usb: fotg210-hcd: " Chunfeng Yun
2020-09-10 8:21 ` Chunfeng Yun [this message]
2020-09-10 8:21 ` [PATCH RESEND v3 08/11] usb: phy-ulpi-viewport: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 09/11] usb: phy: phy-mv-usb: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 10/11] usb: udc: net2280: " Chunfeng Yun
2020-09-10 8:21 ` [PATCH RESEND v3 11/11] iopoll: update kerneldoc of read_poll_timeout_atomic() Chunfeng Yun
2020-09-10 10:49 ` [PATCH RESEND v3 01/11] usb: early: convert to readl_poll_timeout_atomic() Jann Horn
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=1599726112-4439-7-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=dianders@chromium.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=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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).