From 160a061301c7adf54c40696e7ceedc73f6b747dd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 11 Nov 2013 14:13:41 +0800 Subject: spi/qspi: set correct platform drvdata in ti_qspi_probe() The ti_qspi_remove() use the platform drvdata as a type of struct ti_qspi, we should pass correct platform drvdata to platform_set_drvdata() in ti_qspi_probe(). Signed-off-by: Wei Yongjun Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/spi/spi-ti-qspi.c') diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index 0b71270fbf67..e147ed42e1fc 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -459,11 +459,10 @@ static int ti_qspi_probe(struct platform_device *pdev) if (!of_property_read_u32(np, "num-cs", &num_cs)) master->num_chipselect = num_cs; - platform_set_drvdata(pdev, master); - qspi = spi_master_get_devdata(master); qspi->master = master; qspi->dev = &pdev->dev; + platform_set_drvdata(pdev, qspi); r = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- cgit v1.2.3 From 05b96675dbfc97fbb66d58cacbf2c8def020375e Mon Sep 17 00:00:00 2001 From: Sourav Poddar Date: Tue, 19 Nov 2013 18:37:15 +0530 Subject: spi/qspi: cleanup pm_runtime error check. clean up pm_runtime error check in accordance with rest of the check in the driver. Signed-off-by: Sourav Poddar Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/spi/spi-ti-qspi.c') diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index e147ed42e1fc..f3c3c3f7aaed 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -161,7 +161,7 @@ static int ti_qspi_setup(struct spi_device *spi) qspi->spi_max_frequency, clk_div); ret = pm_runtime_get_sync(qspi->dev); - if (ret) { + if (ret < 0) { dev_err(qspi->dev, "pm_runtime_get_sync() failed\n"); return ret; } -- cgit v1.2.3 From cbcabb7a300bf5ab868c632048889a933e7cdae5 Mon Sep 17 00:00:00 2001 From: Sourav Poddar Date: Tue, 19 Nov 2013 18:37:16 +0530 Subject: spi/qspi: Fix qspi remove path. There is a bug in qspi removal path, as a result of which qspi cannot be removed when used as a module. The patch solves the bug and qspi can be removed cleanly. The bugs fixed are: -pm_runtime used around register access. - pm_runtime_disable need to be done before removal. - spi_unregister_master need to be called to unregister the spi device. Tested on DRA7 board. Signed-off-by: Sourav Poddar Signed-off-by: Mark Brown --- drivers/spi/spi-ti-qspi.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'drivers/spi/spi-ti-qspi.c') diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c index f3c3c3f7aaed..4396bd448540 100644 --- a/drivers/spi/spi-ti-qspi.c +++ b/drivers/spi/spi-ti-qspi.c @@ -516,10 +516,26 @@ free_master: static int ti_qspi_remove(struct platform_device *pdev) { - struct ti_qspi *qspi = platform_get_drvdata(pdev); + struct spi_master *master; + struct ti_qspi *qspi; + int ret; + + master = platform_get_drvdata(pdev); + qspi = spi_master_get_devdata(master); + + ret = pm_runtime_get_sync(qspi->dev); + if (ret < 0) { + dev_err(qspi->dev, "pm_runtime_get_sync() failed\n"); + return ret; + } ti_qspi_write(qspi, QSPI_WC_INT_DISABLE, QSPI_INTR_ENABLE_CLEAR_REG); + pm_runtime_put(qspi->dev); + pm_runtime_disable(&pdev->dev); + + spi_unregister_master(master); + return 0; } -- cgit v1.2.3