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mmc: jz4740: 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: Chris Ball <cjb@laptop.org>
This commit is contained in:
Jamie Iles 2011-01-11 12:43:50 +00:00 committed by Chris Ball
parent 9047b435a0
commit 3119cbda85
1 changed files with 3 additions and 2 deletions
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5
drivers/mmc/host/jz4740_mmc.c
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@ -14,6 +14,7 @@
*/
#include <linux/mmc/host.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
@ -827,8 +828,8 @@ static int __devinit jz4740_mmc_probe(struct platform_device* pdev)
}
host->clk = clk_get(&pdev->dev, "mmc");
if (!host->clk) {
ret = -ENOENT;
if (IS_ERR(host->clk)) {
ret = PTR_ERR(host->clk);
dev_err(&pdev->dev, "Failed to get mmc clock\n");
goto err_free_host;
}