s3c2410fb: don't treat NULL clk as an error

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.

Cc: Vincent Sanders <support@simtec.co.uk>
Cc: linux-fbdev@vger.kernel.org
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c
index 46b4309..61c819e 100644 (file)
--- a/drivers/video/s3c2410fb.c
+++ b/drivers/video/s3c2410fb.c
@@ -13,6 +13,7 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/string.h>
 #include <linux/mm.h>
@@ -918,9 +919,9 @@ static int __devinit s3c24xxfb_probe(struct platform_device *pdev,
        }
 
        info->clk = clk_get(NULL, "lcd");
-       if (!info->clk || IS_ERR(info->clk)) {
+       if (IS_ERR(info->clk)) {
                printk(KERN_ERR "failed to get lcd clock source\n");
-               ret = -ENOENT;
+               ret = PTR_ERR(info->clk);
                goto release_irq;
        }