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authorKornel Dulęba2023-11-14 11:54:49 +0000
committerGreg Kroah-Hartman2023-12-08 08:51:13 +0100
commitd2fc10e262b5b6f1cd4a3b8efdb50643bbb4957e (patch)
tree0e1690bb495c94cc8729195d3d1e211dc67b007e /ipc/util.c
parent87ceaa8521fc894d1c2a56759fe73322edac5f72 (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>
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