From: <gregkh@linuxfoundation.org>
To: phil@raspberrypi.org, gregkh@linuxfoundation.org,
stable@vger.kernel.org, stefan.wahren@i2se.com,
ulf.hansson@linaro.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "mmc: bcm2835: Don't overwrite max frequency unconditionally" has been added to the 4.14-stable tree
Date: Tue, 20 Feb 2018 12:08:55 +0100 [thread overview]
Message-ID: <151912493511813@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
mmc: bcm2835: Don't overwrite max frequency unconditionally
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-bcm2835-don-t-overwrite-max-frequency-unconditionally.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 118032be389009b07ecb5a03ffe219a89d421def Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Mon, 12 Feb 2018 21:13:44 +0100
Subject: mmc: bcm2835: Don't overwrite max frequency unconditionally
From: Phil Elwell <phil@raspberrypi.org>
commit 118032be389009b07ecb5a03ffe219a89d421def upstream.
The optional DT parameter max-frequency could init the max bus frequency.
So take care of this, before setting the max bus frequency.
Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.")
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: <stable@vger.kernel.org> # 4.12+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mmc/host/bcm2835.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/mmc/host/bcm2835.c
+++ b/drivers/mmc/host/bcm2835.c
@@ -1265,7 +1265,8 @@ static int bcm2835_add_host(struct bcm28
char pio_limit_string[20];
int ret;
- mmc->f_max = host->max_clk;
+ if (!mmc->f_max || mmc->f_max > host->max_clk)
+ mmc->f_max = host->max_clk;
mmc->f_min = host->max_clk / SDCDIV_MAX_CDIV;
mmc->max_busy_timeout = ~0 / (mmc->f_max / 1000);
Patches currently in stable-queue which might be from phil@raspberrypi.org are
queue-4.14/mmc-bcm2835-don-t-overwrite-max-frequency-unconditionally.patch
reply other threads:[~2018-02-20 11:09 UTC|newest]
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