mmc: sdhci-pci-gli: Disable LPM during initialization
stable inclusion from stable-v6.6.5 commit a488e3e5b11178a18b431e2defea4808332aee70 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8N21P Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a488e3e5b11178a18b431e2defea4808332aee70 -------------------------------- commit d9ed644f58670865cf067351deb71010bd87a52f upstream. To address IO performance commit f9e5b339 ("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: f9e5b339 ("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> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com>
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