spi: Helper for deriving timeout values

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Merge series from Miquel Raynal <miquel.raynal@bootlin.com>:

I recently came across an issue with the Atmel spi controller driver
which would stop my transfers after a too small timeout when performing
big transfers (reading a 4MiB flash in one transfer). My initial idea
was to derive a the maximum amount of time a transfer would take
depending on its size and use that as value to avoid erroring-out when
not relevant. Mark wanted to go further by creating a core helper doing
that, based on the heuristics from the sun6i driver.

Here is a small series of 3 patches doing exactly that.

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Mark Brown 2023-06-23 01:31:11 +01:00

parent 01fa9edd8b 6eef895581

commit a77541cab0

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3 changed files with 29 additions and 8 deletions

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18

drivers/spi/spi-atmel.c

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2

drivers/spi/spi-sun6i.c

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17

include/linux/spi/spi.h

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