From 118eb0e52eb74b899053a0f46dfe7e178788d23b Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Thu, 28 May 2020 12:06:05 -0700 Subject: [PATCH] spi: bcm2835: Implement shutdown callback Make sure we clear the FIFOs, stop the block, disable the clock and release the DMA channel. Signed-off-by: Florian Fainelli Link: https://lore.kernel.org/r/20200528190605.24850-1-f.fainelli@gmail.com Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/spi/spi-bcm2835.c b/drivers/spi/spi-bcm2835.c index 20d8581..237bd30 100644 --- a/drivers/spi/spi-bcm2835.c +++ b/drivers/spi/spi-bcm2835.c @@ -1391,6 +1391,15 @@ static int bcm2835_spi_remove(struct platform_device *pdev) return 0; } +static void bcm2835_spi_shutdown(struct platform_device *pdev) +{ + int ret; + + ret = bcm2835_spi_remove(pdev); + if (ret) + dev_err(&pdev->dev, "failed to shutdown\n"); +} + static const struct of_device_id bcm2835_spi_match[] = { { .compatible = "brcm,bcm2835-spi", }, {} @@ -1404,6 +1413,7 @@ static struct platform_driver bcm2835_spi_driver = { }, .probe = bcm2835_spi_probe, .remove = bcm2835_spi_remove, + .shutdown = bcm2835_spi_shutdown, }; module_platform_driver(bcm2835_spi_driver); -- 2.7.4