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| author | Evan Green <[email protected]> | 2018-05-25 19:25:23 +0000 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2018-05-29 10:24:26 +0000 |
| commit | 52af318c93e970d26c5522eab23ef84fdcb417e1 (patch) | |
| tree | f971ff2041bde54c46d870236872cc977acb0722 /drivers/fpga/socfpga-a10.c | |
| parent | mmc: sdhci-*: Don't emit error msg if sdhci_add_host() fails (diff) | |
| download | kernel-52af318c93e970d26c5522eab23ef84fdcb417e1.tar.gz kernel-52af318c93e970d26c5522eab23ef84fdcb417e1.zip | |
mmc: Allow non-sleeping GPIO cd
This change uses the appropriate _cansleep or non-sleeping API for
reading GPIO card detect state. This allows users with GPIOs that
never sleep to avoid a warning when certain quirks are present.
The sdhci controller has an SDHCI_QUIRK_NO_CARD_NO_RESET, which
indicates that a controller will not reset properly if no card is
inserted. With this quirk enabled, mmc_get_cd_gpio is called in
several places with a spinlock held and interrupts disabled.
gpiod_get_raw_value_cansleep is not happy with this situation,
and throws out a warning.
For boards that a) use controllers that have this quirk, and b) wire
card detect up to a GPIO that doesn't sleep, this is a spurious warning.
This change silences that warning, at the cost of pushing this problem
down to users that have sleeping GPIOs and controllers with this quirk.
Signed-off-by: Evan Green <[email protected]>
Signed-off-by: Ulf Hansson <[email protected]>
Diffstat (limited to 'drivers/fpga/socfpga-a10.c')
0 files changed, 0 insertions, 0 deletions