https://github.com/torvalds/linux
Revision 18d200460cd73636d4f20674085c39e32b4e0097 authored by Ulf Hansson on 11 March 2020, 09:20:36 UTC, committed by Ulf Hansson on 12 March 2020, 12:36:55 UTC
The busy timeout for the CMD5 to put the eMMC into sleep state, is specific to the card. Potentially the timeout may exceed the host->max_busy_timeout. If that becomes the case, mmc_sleep() converts from using an R1B response to an R1 response, as to prevent the host from doing HW busy detection. However, it has turned out that some hosts requires an R1B response no matter what, so let's respect that via checking MMC_CAP_NEED_RSP_BUSY. Note that, if the R1B gets enforced, the host becomes fully responsible of managing the needed busy timeout, in one way or the other. Suggested-by: Sowjanya Komatineni <skomatineni@nvidia.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200311092036.16084-1-ulf.hansson@linaro.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Tip revision: 18d200460cd73636d4f20674085c39e32b4e0097 authored by Ulf Hansson on 11 March 2020, 09:20:36 UTC
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command
mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for eMMC sleep command
Tip revision: 18d2004
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