Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully"

This reverts commit 3500ed90b26a9935b943b5e2e4cd3226600d6b58.

The reverted patch caused a significant performance regression when
booting with the root file system on eMMC.

Before the patch:

[    1.625623] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

After the patch:

[    1.935851] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.

That was an addition of 310 ms which is a 19% performance degradation.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index ad7decc3340a29b2c482d343d48aee8a22fe2e68..3bf1c462eded498c9824757ffea2971274ad2049 100644 (file)
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2418,7 +2418,6 @@ void mmc_start_host(struct mmc_host *host)
        host->rescan_disable = 0;
        mmc_power_up(host);
        mmc_detect_change(host, 0);
-       mmc_flush_scheduled_work();
 }
 
 void mmc_stop_host(struct mmc_host *host)