diff options
author | Kornel Dulęba | 2023-11-14 11:54:49 +0000 |
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committer | Greg Kroah-Hartman | 2023-12-08 08:51:13 +0100 |
commit | d2fc10e262b5b6f1cd4a3b8efdb50643bbb4957e (patch) | |
tree | 0e1690bb495c94cc8729195d3d1e211dc67b007e /ipc/util.c | |
parent | 87ceaa8521fc894d1c2a56759fe73322edac5f72 (diff) |
mmc: sdhci-pci-gli: Disable LPM during initialization
commit d9ed644f58670865cf067351deb71010bd87a52f upstream.
To address IO performance commit f9e5b33934ce
("mmc: host: Improve I/O read/write performance for GL9763E")
limited LPM negotiation to runtime suspend state.
The problem is that it only flips the switch in the runtime PM
resume/suspend logic.
Disable LPM negotiation in gl9763e_add_host.
This helps in two ways:
1. It was found that the LPM switch stays in the same position after
warm reboot. Having it set in init helps with consistency.
2. Disabling LPM during the first runtime resume leaves us susceptible
to the performance issue in the time window between boot and the
first runtime suspend.
Fixes: f9e5b33934ce ("mmc: host: Improve I/O read/write performance for GL9763E")
Cc: stable@vger.kernel.org
Signed-off-by: Kornel Dulęba <korneld@chromium.org>
Reviewed-by: Sven van Ashbrook <svenva@chromium.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20231114115516.1585361-1-korneld@chromium.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'ipc/util.c')
0 files changed, 0 insertions, 0 deletions