[PATCH v2] spi: spi-mtk-nor: fix timeout calculation overflow

Mark Brown broonie at kernel.org
Fri Sep 25 16:42:13 EDT 2020

On Tue, 22 Sep 2020 19:49:02 +0800, Chuanhong Guo wrote:
> CLK_TO_US macro is used to calculate potential transfer time for various
> timeout handling. However it overflows on transfer bigger than 512 bytes
> because it first did (len * 8 * 1000000).
> This controller typically operates at 45MHz. This patch did 2 things:
> 1. calculate clock / 1000000 first
> 2. add a 4M transfer size cap so that the final timeout in DMA reading
>    doesn't overflow

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next


[1/1] spi: spi-mtk-nor: fix timeout calculation overflow
      commit: 4cafaddedb5fbef9531202ee547784409fd0de33

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

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