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Subject[PATCH v8 2/5] mmc: core: Enable the MMC host software queue for the SD card
Date
From: Baolin Wang <baolin.wang@linaro.org>

Enable the MMC host software queue for the SD card if the host controller
supports the MMC host software queue.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
drivers/mmc/core/sd.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index fe914ff..76c7add 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -1082,6 +1082,16 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
}
}

+ if (host->cqe_ops && !host->cqe_enabled) {
+ err = host->cqe_ops->cqe_enable(host, card);
+ if (!err) {
+ host->cqe_enabled = true;
+ host->hsq_enabled = true;
+ pr_info("%s: Host Software Queue enabled\n",
+ mmc_hostname(host));
+ }
+ }
+
if (host->caps2 & MMC_CAP2_AVOID_3_3V &&
host->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
pr_err("%s: Host failed to negotiate down from 3.3V\n",
--
1.7.9.5
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