From: Baolin Wang <baolin.wang7@gmail.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: orsonzhai@gmail.com, zhang.lyra@gmail.com,
baolin.wang7@gmail.com, linux-mmc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] mmc: host: sdhci-sprd: Set the missing MMC_CAP_WAIT_WHILE_BUSY flag
Date: Mon, 24 Feb 2020 17:08:49 +0800 [thread overview]
Message-ID: <96f16647f6a6e8cb058c44e46c61b122df027059.1582535202.git.baolin.wang7@gmail.com> (raw)
The Spreadtrum host controller supports HW busy detection for I/O
operations, which means when the host gets a transfer complete event,
that always indicates the busy signal is released. Thus we can set
the MMC_CAP_WAIT_WHILE_BUSY flag to remove some redundant software
busy polling.
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
drivers/mmc/host/sdhci-sprd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index d346223..2ab42c5 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -556,7 +556,7 @@ static int sdhci_sprd_probe(struct platform_device *pdev)
sdhci_sprd_voltage_switch;
host->mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
- MMC_CAP_ERASE | MMC_CAP_CMD23;
+ MMC_CAP_ERASE | MMC_CAP_CMD23 | MMC_CAP_WAIT_WHILE_BUSY;
ret = mmc_of_parse(host->mmc);
if (ret)
goto pltfm_free;
--
1.9.1
next reply other threads:[~2020-02-24 9:09 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-24 9:08 Baolin Wang [this message]
2020-02-27 13:19 ` Adrian Hunter
2020-03-04 15:34 ` Ulf Hansson
2020-03-05 1:16 ` Baolin Wang
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=96f16647f6a6e8cb058c44e46c61b122df027059.1582535202.git.baolin.wang7@gmail.com \
--to=baolin.wang7@gmail.com \
--cc=adrian.hunter@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=orsonzhai@gmail.com \
--cc=ulf.hansson@linaro.org \
--cc=zhang.lyra@gmail.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
all inboxes | Powered by JetHome®