From: Xu Yilun <yilun.xu@intel.com>
To: mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: trix@redhat.com, bhu@redhat.com,
Matthew Gerlach <matthew.gerlach@linux.intel.com>,
Xu Yilun <yilun.xu@intel.com>
Subject: [PATCH 2/2] fpga: dfl: fix bug in port reset handshake
Date: Thu, 16 Apr 2020 11:11:52 +0800 [thread overview]
Message-ID: <1587006712-22696-3-git-send-email-yilun.xu@intel.com> (raw)
In-Reply-To: <1587006712-22696-1-git-send-email-yilun.xu@intel.com>
From: Matthew Gerlach <matthew.gerlach@linux.intel.com>
When putting the port in reset, driver must wait for the soft reset
acknowledgment bit instead of the soft reset bit.
Fixes: 47c1b19c160f (fpga: dfl: afu: add port ops support)
Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
---
drivers/fpga/dfl-afu-main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
index b0c3178..3fa2c59 100644
--- a/drivers/fpga/dfl-afu-main.c
+++ b/drivers/fpga/dfl-afu-main.c
@@ -83,7 +83,8 @@ int __afu_port_disable(struct platform_device *pdev)
* on this port and minimum soft reset pulse width has elapsed.
* Driver polls port_soft_reset_ack to determine if reset done by HW.
*/
- if (readq_poll_timeout(base + PORT_HDR_CTRL, v, v & PORT_CTRL_SFTRST,
+ if (readq_poll_timeout(base + PORT_HDR_CTRL, v,
+ v & PORT_CTRL_SFTRST_ACK,
RST_POLL_INVL, RST_POLL_TIMEOUT)) {
dev_err(&pdev->dev, "timeout, fail to reset device\n");
return -ETIMEDOUT;
--
2.7.4
next prev parent reply other threads:[~2020-04-16 3:15 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 3:11 [PATCH 0/2] Bug fixes for FPGA DFL Xu Yilun
2020-04-16 3:11 ` [PATCH 1/2] fpga: dfl: pci: reduce the scope of variable 'ret' Xu Yilun
2020-04-16 8:04 ` Wu, Hao
2020-04-16 16:56 ` Tom Rix
2020-04-17 1:56 ` Xu Yilun
2020-04-17 3:05 ` Wu, Hao
2020-04-17 3:21 ` Xu Yilun
2020-04-17 5:55 ` Wu, Hao
2020-04-16 3:11 ` Xu Yilun [this message]
2020-04-16 8:06 ` [PATCH 2/2] fpga: dfl: fix bug in port reset handshake Wu, Hao
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