From: Julien Boibessot Date: Mon, 1 Dec 2008 21:13:55 +0000 (-0800) Subject: spi: fix spi_imx probe oopsing X-Git-Tag: v2.6.28-rc7~16 X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=commitdiff_plain;h=6a010b56e9bd2fdb32efd153e1a08305949b6b53 spi: fix spi_imx probe oopsing Corrects spi_imx driver oops during initialization/probing: can't use drv_data before it's allocated. Signed-off-by: Julien Boibessot Acked-by: Sascha Hauer Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c index 0b4db0ce78d..269a55ec52e 100644 --- a/drivers/spi/spi_imx.c +++ b/drivers/spi/spi_imx.c @@ -1456,7 +1456,7 @@ static int __init spi_imx_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct spi_imx_master *platform_info; struct spi_master *master; - struct driver_data *drv_data = NULL; + struct driver_data *drv_data; struct resource *res; int irq, status = 0; @@ -1467,14 +1467,6 @@ static int __init spi_imx_probe(struct platform_device *pdev) goto err_no_pdata; } - drv_data->clk = clk_get(&pdev->dev, "perclk2"); - if (IS_ERR(drv_data->clk)) { - dev_err(&pdev->dev, "probe - cannot get get\n"); - status = PTR_ERR(drv_data->clk); - goto err_no_clk; - } - clk_enable(drv_data->clk); - /* Allocate master with space for drv_data */ master = spi_alloc_master(dev, sizeof(struct driver_data)); if (!master) { @@ -1495,6 +1487,14 @@ static int __init spi_imx_probe(struct platform_device *pdev) drv_data->dummy_dma_buf = SPI_DUMMY_u32; + drv_data->clk = clk_get(&pdev->dev, "perclk2"); + if (IS_ERR(drv_data->clk)) { + dev_err(&pdev->dev, "probe - cannot get clock\n"); + status = PTR_ERR(drv_data->clk); + goto err_no_clk; + } + clk_enable(drv_data->clk); + /* Find and map resources */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { @@ -1630,12 +1630,13 @@ err_no_iomap: kfree(drv_data->ioarea); err_no_iores: - spi_master_put(master); - -err_no_pdata: clk_disable(drv_data->clk); clk_put(drv_data->clk); + err_no_clk: + spi_master_put(master); + +err_no_pdata: err_no_mem: return status; }