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| author | Masahiro Honda <honda@mechatrax.com> | 2023-05-18 14:08:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-09 11:34:19 +0300 |
| commit | 89f92d435352578bd940bb39f03f9e64ba1fa180 (patch) | |
| tree | bb0657d1a43e478b4b75170235e7ac1ad941bac5 /drivers/iio/common | |
| parent | 2eb269605113326950cf9f6493df720af19f75ee (diff) | |
| download | linux-89f92d435352578bd940bb39f03f9e64ba1fa180.tar.xz | |
iio: adc: ad_sigma_delta: Fix IRQ issue by setting IRQ_DISABLE_UNLAZY flag
commit 626d312028bec44209d0ecd5beaa9b1aa8945f7d upstream.
The Sigma-Delta ADCs supported by this driver can use SDO as an interrupt
line to indicate the completion of a conversion. However, some devices
cannot properly detect the completion of a conversion by an interrupt.
This is for the reason mentioned in the following commit.
commit e9849777d0e2 ("genirq: Add flag to force mask in
disable_irq[_nosync]()")
A read operation is performed by an extra interrupt before the completion
of a conversion. At this time, the value read from the ADC data register
is the same as the previous conversion result. This patch fixes the issue
by setting IRQ_DISABLE_UNLAZY flag.
Fixes: 0c6ef985a1fd ("iio: adc: ad7791: fix IRQ flags")
Fixes: 1a913270e57a ("iio: adc: ad7793: Fix IRQ flag")
Fixes: e081102f3077 ("iio: adc: ad7780: Fix IRQ flag")
Fixes: 89a86da5cb8e ("iio: adc: ad7192: Add IRQ flag")
Fixes: 79ef91493f54 ("iio: adc: ad7124: Set IRQ type to falling")
Signed-off-by: Masahiro Honda <honda@mechatrax.com>
Link: https://lore.kernel.org/r/20230518110816.248-1-honda@mechatrax.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio/common')
0 files changed, 0 insertions, 0 deletions