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| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-05-27 13:45:55 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2019-05-28 22:02:05 +0200 |
| commit | 89f3c365f3e113d087f105c3acbbb5a71eee84e3 (patch) | |
| tree | 37d9de24d12dd88c753f29e5a4c30f19035602cb /drivers/mmc/host/sdhci_am654.c | |
| parent | mmc: meson-gx: fix irq ack (diff) | |
| download | linux-89f3c365f3e113d087f105c3acbbb5a71eee84e3.tar.xz linux-89f3c365f3e113d087f105c3acbbb5a71eee84e3.zip | |
mmc: sdhci: Fix SDIO IRQ thread deadlock
Since commit c07a48c26519 ("mmc: sdhci: Remove finish_tasklet"), the IRQ
thread might be used to complete requests, but the IRQ thread is also used
to process SDIO card interrupts. This can cause a deadlock when the SDIO
processing tries to access the card since that would also require the IRQ
thread. Change SDHCI to use sdio_signal_irq() to schedule a work item
instead. That also requires implementing the ->ack_sdio_irq() mmc host op.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: c07a48c26519 ("mmc: sdhci: Remove finish_tasklet")
Reported-by: Brian Masney <masneyb@onstation.org>
Tested-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/sdhci_am654.c')
0 files changed, 0 insertions, 0 deletions