From 1c75cfd53e213044523141b464eb06813e39ecea Mon Sep 17 00:00:00 2001 From: Etienne Carriere Date: Fri, 5 Feb 2021 19:59:29 +0100 Subject: [PATCH] spi: stm32: driver uses reset controller only at init Remove reset controller device reference from the device private structure since it is used only at probe time and can be discarded once used to reset the SPI device. Signed-off-by: Etienne Carriere Signed-off-by: Alain Volmat Link: https://lore.kernel.org/r/1612551572-495-6-git-send-email-alain.volmat@foss.st.com Signed-off-by: Mark Brown --- drivers/spi/spi-stm32.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 8e4db21..5612348 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -263,7 +263,6 @@ struct stm32_spi_cfg { * @base: virtual memory area * @clk: hw kernel clock feeding the SPI clock generator * @clk_rate: rate of the hw kernel clock feeding the SPI clock generator - * @rst: SPI controller reset line * @lock: prevent I/O concurrent access * @irq: SPI controller interrupt line * @fifo_size: size of the embedded fifo in bytes @@ -289,7 +288,6 @@ struct stm32_spi { void __iomem *base; struct clk *clk; u32 clk_rate; - struct reset_control *rst; spinlock_t lock; /* prevent I/O concurrent access */ int irq; unsigned int fifo_size; @@ -1811,6 +1809,7 @@ static int stm32_spi_probe(struct platform_device *pdev) struct spi_master *master; struct stm32_spi *spi; struct resource *res; + struct reset_control *rst; int ret; master = spi_alloc_master(&pdev->dev, sizeof(struct stm32_spi)); @@ -1872,11 +1871,11 @@ static int stm32_spi_probe(struct platform_device *pdev) goto err_clk_disable; } - spi->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); - if (!IS_ERR(spi->rst)) { - reset_control_assert(spi->rst); + rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (!IS_ERR(rst)) { + reset_control_assert(rst); udelay(2); - reset_control_deassert(spi->rst); + reset_control_deassert(rst); } if (spi->cfg->has_fifo) -- 2.7.4