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spi/dw_spi: don't treat NULL clk as an error

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clk_get() returns a struct clk cookie to the driver and some platforms
may return NULL if they only support a single clock.  clk_get() has only
failed if it returns a ERR_PTR() encoded pointer.

Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Jamie Iles 2011-01-11 12:43:52 +00:00 committed by Grant Likely
parent 76d9cc454a
commit 50c01fc355
1 changed files with 3 additions and 2 deletions
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5
drivers/spi/dw_spi_mmio.c
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@ -9,6 +9,7 @@
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
@ -68,8 +69,8 @@ static int __devinit dw_spi_mmio_probe(struct platform_device *pdev)
}
dwsmmio->clk = clk_get(&pdev->dev, NULL);
if (!dwsmmio->clk) {
ret = -ENODEV;
if (IS_ERR(dwsmmio->clk)) {
ret = PTR_ERR(dwsmmio->clk);
goto err_irq;
}
clk_enable(dwsmmio->clk);