From: yisun1 <yi.y.sun@intel.com>
To: linux-mmc@vger.kernel.org
Cc: yi.y.sun@intel.com
Subject: [PATCH] mmc: execute tuning when device is not busy.
Date: Fri, 1 Aug 2014 14:49:16 +0800 [thread overview]
Message-ID: <1406875757-379-1-git-send-email-yi.y.sun@intel.com> (raw)
We find tuning timeout because of the secure erase operation lasts too long
so not to do tuning when device is busy.
Signed-off-by: yisun1 <yi.y.sun@intel.com>
---
drivers/mmc/host/sdhci.c | 3 ++-
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 47055f3..55491ae 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1359,7 +1359,8 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
* tuning procedure before sending command.
*/
if ((host->flags & SDHCI_NEEDS_RETUNING) &&
- !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) {
+ !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ)) &&
+ (present_state & SDHCI_DATA_0_LVL_MASK)) {
if (mmc->card) {
/* eMMC uses cmd21 but sd and sdio use cmd19 */
tuning_opcode =
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 4a5cd5e..0ae6b99d 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -72,6 +72,7 @@
#define SDHCI_WRITE_PROTECT 0x00080000
#define SDHCI_DATA_LVL_MASK 0x00F00000
#define SDHCI_DATA_LVL_SHIFT 20
+#define SDHCI_DATA_0_LVL_MASK 0x00100000
#define SDHCI_HOST_CONTROL 0x28
#define SDHCI_CTRL_LED 0x01
--
1.7.9.5
reply other threads:[~2014-08-01 6:55 UTC|newest]
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