diff options
| author | Ulf Hansson <ulf.hansson@linaro.org> | 2021-12-03 15:15:54 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-12-20 11:09:15 +0100 |
| commit | 66c915d09b942fb3b2b0cb2f56562180901fba17 (patch) | |
| tree | cc524c76e200a44c4a0a040a1b196d7723ab0523 /drivers/mmc/core/core.c | |
| parent | 4fc7261dbab139d3c64c3b618262504e16cfe7ee (diff) | |
| download | linux-66c915d09b942fb3b2b0cb2f56562180901fba17.tar.bz2 | |
mmc: core: Disable card detect during shutdown
It's seems prone to problems by allowing card detect and its corresponding
mmc_rescan() work to run, during platform shutdown. For example, we may end
up turning off the power while initializing a card, which potentially could
damage it.
To avoid this scenario, let's add ->shutdown_pre() callback for the mmc host
class device and then turn of the card detect from there.
Reported-by: Al Cooper <alcooperx@gmail.com>
Suggested-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211203141555.105351-1-ulf.hansson@linaro.org
Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 240c5af793dc..368f10405e13 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2264,7 +2264,7 @@ void mmc_start_host(struct mmc_host *host) _mmc_detect_change(host, 0, false); } -void mmc_stop_host(struct mmc_host *host) +void __mmc_stop_host(struct mmc_host *host) { if (host->slot.cd_irq >= 0) { mmc_gpio_set_cd_wake(host, false); @@ -2273,6 +2273,11 @@ void mmc_stop_host(struct mmc_host *host) host->rescan_disable = 1; cancel_delayed_work_sync(&host->detect); +} + +void mmc_stop_host(struct mmc_host *host) +{ + __mmc_stop_host(host); /* clear pm flags now and let card drivers set them as needed */ host->pm_flags = 0; |