mmc: longer timeout for long read time quirk

008GE0 Toshiba mmc in some Intel Baytrail tablets responds to
MMC_SEND_EXT_CSD in 450-600ms.

This patch will...

() Increase the long read time quirk timeout from 300ms to 600ms. Original
   author of that quirk says 300ms was only a guess and that the number
   may need to be raised in the future.

() Add this specific MMC to the quirk

Signed-off-by: Matt Gumbel <matthew.k.gumbel@intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 33b98595d8d7d311cef30833e69e567ba2706981..a92d183907ed0af9ff9d5e3943b64e40ce073692 100644 (file)
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2536,11 +2536,12 @@ static const struct mmc_fixup blk_fixups[] =
                  MMC_QUIRK_BLK_NO_CMD23),
 
        /*
-        * Some Micron MMC cards needs longer data read timeout than
-        * indicated in CSD.
+        * Some MMC cards need longer data read timeout than indicated in CSD.
         */
        MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
                  MMC_QUIRK_LONG_READ_TIME),
+       MMC_FIXUP("008GE0", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc,
+                 MMC_QUIRK_LONG_READ_TIME),
 
        /*
         * On these Samsung MoviNAND parts, performing secure erase or

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 99275e40bf2fb7f61083d6bcf2b867d76d6b25ca..8b4dfd45433b73c1ccf6fe4cd4f9ca3338546cff 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -875,11 +875,11 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card)
        /*
         * Some cards require longer data read timeout than indicated in CSD.
         * Address this by setting the read timeout to a "reasonably high"
-        * value. For the cards tested, 300ms has proven enough. If necessary,
+        * value. For the cards tested, 600ms has proven enough. If necessary,
         * this value can be increased if other problematic cards require this.
         */
        if (mmc_card_long_read_time(card) && data->flags & MMC_DATA_READ) {
-               data->timeout_ns = 300000000;
+               data->timeout_ns = 600000000;
                data->timeout_clks = 0;
        }