All of lore.kernel.org
 help / color / mirror / Atom feed
From: <gregkh@linuxfoundation.org>
To: ulf.hansson@linaro.org, anders.roxell@linaro.org,
	faiz_abbas@ti.com, naresh.kamboju@linaro.org,
	stable@vger.kernel.org
Cc: <stable@vger.kernel.org>
Subject: FAILED: patch "[PATCH] mmc: sdhci-omap: Fix busy detection by enabling" failed to apply to 5.4-stable tree
Date: Mon, 16 Mar 2020 12:31:47 +0100	[thread overview]
Message-ID: <158435830716852@kroah.com> (raw)


The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 055e04830d4544c57f2a5192a26c9e25915c29c0 Mon Sep 17 00:00:00 2001
From: Ulf Hansson <ulf.hansson@linaro.org>
Date: Tue, 10 Mar 2020 15:05:02 +0100
Subject: [PATCH] mmc: sdhci-omap: Fix busy detection by enabling
 MMC_CAP_NEED_RSP_BUSY

It has turned out that the sdhci-omap controller requires the R1B response,
for commands that has this response associated with them. So, converting
from an R1B to an R1 response for a CMD6 for example, leads to problems
with the HW busy detection support.

Fix this by informing the mmc core about the requirement, via setting the
host cap, MMC_CAP_NEED_RSP_BUSY.

Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Reported-by: Anders Roxell <anders.roxell@linaro.org>
Reported-by: Faiz Abbas <faiz_abbas@ti.com>
Cc: <stable@vger.kernel.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Tested-by: Faiz Abbas <faiz_abbas@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c
index 882053151a47..c4978177ef88 100644
--- a/drivers/mmc/host/sdhci-omap.c
+++ b/drivers/mmc/host/sdhci-omap.c
@@ -1192,6 +1192,9 @@ static int sdhci_omap_probe(struct platform_device *pdev)
 	if (of_find_property(dev->of_node, "dmas", NULL))
 		sdhci_switch_external_dma(host, true);
 
+	/* R1B responses is required to properly manage HW busy detection. */
+	mmc->caps |= MMC_CAP_NEED_RSP_BUSY;
+
 	ret = sdhci_setup_host(host);
 	if (ret)
 		goto err_put_sync;


                 reply	other threads:[~2020-03-16 11:31 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=158435830716852@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=anders.roxell@linaro.org \
    --cc=faiz_abbas@ti.com \
    --cc=naresh.kamboju@linaro.org \
    --cc=stable@vger.kernel.org \
    --cc=ulf.hansson@linaro.org \
    /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.