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authorJulien Boibessot <julien.boibessot@free.fr>2008-12-01 13:13:55 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-01 19:55:24 -0800
commit6a010b56e9bd2fdb32efd153e1a08305949b6b53 (patch)
treee4caf907a10b497f0040255a8b3ece28c0dc2b27
parent7ef9964e6d1b911b78709f144000aacadd0ebc21 (diff)
downloadlinux-stericsson-6a010b56e9bd2fdb32efd153e1a08305949b6b53.tar.gz
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 <julien.boibessot@armadeus.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--drivers/spi/spi_imx.c25
1 files changed, 13 insertions, 12 deletions
diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c
index 0b4db0ce78d6..269a55ec52ef 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;
}