Revert "mmc: core: wait while adding MMC host to ensure root mounts successfully"
commitf9a94e0a3f18ae4c0245d4a16d0ee20e93fd7bad
authorAdrian Hunter <adrian.hunter@intel.com>
Thu, 4 Apr 2013 13:41:05 +0000 (4 16:41 +0300)
committerChris Ball <cjb@laptop.org>
Fri, 12 Apr 2013 18:07:50 +0000 (12 14:07 -0400)
tree20bfeed8c82f03b1a14ecb650ad2b4767b17a5b5
parentbdbc5d0c60f3e9de3eeccf1c1a18bdc11dca62cc
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>
drivers/mmc/core/core.c