Messages in this thread | | | Date | Wed, 28 Sep 2022 12:30:11 +0100 | From | Mark Brown <> | Subject | Re: [PATCH RFC SPI for-next 2/2] spi: microchip: pci1xxxx: Add suspend and resume support for PCI1XXXX SPI driver |
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On Wed, Sep 28, 2022 at 09:13:36AM +0530, Tharun Kumar P wrote:
> + for (iter = 0; iter < spi_ptr->total_hw_instances; iter++) { > + spi_sub_ptr = spi_ptr->spi_int[iter]; > + > + /* Store existing config before suspend */ > + store_restore_config(spi_ptr, spi_sub_ptr, iter, 1); > + spi_master_suspend(spi_sub_ptr->spi_host); > + writel(reg1, spi_ptr->reg_base + > + SPI_MST_EVENT_MASK_REG_OFFSET(iter)); > + }
This saves the register configuration before suspending the device, meaning there may be in progress transfers changing the device while the save is going on. [unhandled content-type:application/pgp-signature] | |