From: Adrian Hunter <adrian.hunter@intel.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: linux-mmc <linux-mmc@vger.kernel.org>
Subject: [PATCH] mmc: core: Attempt to flush cache before reset
Date: Thu, 28 Apr 2016 10:48:59 +0300 [thread overview]
Message-ID: <1461829739-19772-1-git-send-email-adrian.hunter@intel.com> (raw)
CMD0 or hardware reset may invalidate the cache, so it needs to be
flushed before reset.
In the case of recovery, we can't expect flushing the cache to work
always, but have a go and ignore errors.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
drivers/mmc/core/core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 99275e40bf2f..1b4e0ccb0885 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2453,6 +2453,12 @@ int mmc_hw_reset(struct mmc_host *host)
return -EOPNOTSUPP;
}
+ /*
+ * In the case of recovery, we can't expect flushing the cache to work
+ * always, but we have a go and ignore errors.
+ */
+ mmc_flush_cache(host->card);
+
ret = host->bus_ops->reset(host);
mmc_bus_put(host);
--
1.9.1
next reply other threads:[~2016-04-28 7:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 7:48 Adrian Hunter [this message]
2016-05-02 8:31 ` [PATCH] mmc: core: Attempt to flush cache before reset Ulf Hansson
2016-05-04 7:38 ` [PATCH V2] mmc: mmc: " Adrian Hunter
2016-05-04 11:13 ` Ulf Hansson
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