On Tue, Aug 24, 2021 at 11:40:37AM +0100, Lucas Tanure wrote: > - spi_busy = (ioread32((u8 __iomem *)amd_spi->io_remap_addr + > - AMD_SPI_CTRL0_REG) & AMD_SPI_BUSY) == AMD_SPI_BUSY; This does ioread32() while readl_poll_timeout() does a readl(). These are almost but not quite equivalent and the differences apply to PCI devices like this one, see device-io.rst.
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