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| author | Théo Lebrun <[email protected]> | 2024-04-23 10:01:42 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2024-04-26 02:09:24 +0000 |
| commit | c1887396373b8faecef61d352bd521ac66162706 (patch) | |
| tree | 8a533995239bf7bedbcf8722857ca0fec27a445a /drivers/platform/surface/aggregator/ssh_request_layer.c | |
| parent | spi: cadence-qspi: add no-IRQ mode to indirect reads (diff) | |
| download | kernel-c1887396373b8faecef61d352bd521ac66162706.tar.gz kernel-c1887396373b8faecef61d352bd521ac66162706.zip | |
spi: cadence-qspi: add early busywait to cqspi_wait_for_bit()
Call readl_relaxed_poll_timeout() with no sleep at the start of
cqspi_wait_for_bit(). If its short timeout expires, a sleeping
readl_relaxed_poll_timeout() call takes the relay.
The reason is to avoid hrtimer interrupts on the system. All read
operations are expected to take less than 100µs.
Signed-off-by: Théo Lebrun <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'drivers/platform/surface/aggregator/ssh_request_layer.c')
0 files changed, 0 insertions, 0 deletions