CHROMIUM: config: Disable 8250 serial driver on qualcomm [chromiumos/third_party/kernel : chromeos-5.4]

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Apr 8, 2020, 12:04:34 PM4/8/20

to Stephen Boyd, Evan Green, Douglas Anderson, Micah Morton

Commit Bot submitted this change.

Approvals:
  Evan Green: Looks good to me, approved; Commit; Verified
  Stephen Boyd: Verified; Send CL to CQ automatically after approval

CHROMIUM: config: Disable 8250 serial driver on qualcomm

Disable the 8250 serial driver on Qualcomm configurations. This saves
some kernel code size and runtime memory and removes a 3 microsecond
delay during suspend.

Created by running the following:

echo '# CONFIG_SERIAL_8250 is not set' >>
./chromeos/config/arm64/chromiumos-qualcomm.flavour.config
./chromeos/scripts/kernelconfig genconfig

BUG=None
TEST=Boot trogdor, see that /sys/bus/platform/serial8250 is gone

Signed-off-by: Stephen Boyd <swb...@chromium.org>
Change-Id: I4ca4384dfb80fd05083f1cfbb23de3436731bee9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2141691
Tested-by: Evan Green <evg...@chromium.org>
Commit-Queue: Evan Green <evg...@chromium.org>
Reviewed-by: Evan Green <evg...@chromium.org>
---
M chromeos/config/arm64/chromiumos-arm64.flavour.config
M chromeos/config/arm64/chromiumos-mediatek.flavour.config
M chromeos/config/arm64/chromiumos-qualcomm.flavour.config
M chromeos/config/arm64/chromiumos-rockchip64.flavour.config
M chromeos/config/arm64/common.config
5 files changed, 9 insertions(+), 4 deletions(-)

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