xilinxfb: Don't bail if the xilinxfb platform device doesn't have any pdata

Lack of pdata is not a fatal omission.  The driver can still be used even
if we do not know the screen dimensions.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Andrei Konovalov <akonovalov@ru.mvista.com>
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 12 deletions

diff --git a/drivers/video/xilinxfb.c b/drivers/video/xilinxfb.c
index 44ce955a5b14..6ef9733a18d4 100644
--- a/drivers/video/xilinxfb.c
+++ b/drivers/video/xilinxfb.c
@@ -212,11 +212,6 @@ xilinxfb_drv_probe(struct device *dev)
         pdev = to_platform_device(dev);
         pdata = pdev->dev.platform_data;
 
-        if (pdata == NULL) {
-                printk(KERN_ERR "Couldn't find platform data.\n");
-                return -EFAULT;
-        }
-
         drvdata = kzalloc(sizeof(*drvdata), GFP_KERNEL);
         if (!drvdata) {
                 printk(KERN_ERR "Couldn't allocate device private record\n");
@@ -258,11 +253,9 @@ xilinxfb_drv_probe(struct device *dev)
         xilinx_fb_out_be32(drvdata, REG_FB_ADDR, drvdata->fb_phys);
 
         /* Turn on the display */
-        if (pdata->rotate_screen) {
-                drvdata->reg_ctrl_default = REG_CTRL_ENABLE | REG_CTRL_ROTATE;
-        } else {
-                drvdata->reg_ctrl_default = REG_CTRL_ENABLE;
-        }
+        drvdata->reg_ctrl_default = REG_CTRL_ENABLE;
+        if (pdata && pdata->rotate_screen)
+                drvdata->reg_ctrl_default |= REG_CTRL_ROTATE;
         xilinx_fb_out_be32(drvdata, REG_CTRL, drvdata->reg_ctrl_default);
 
         /* Fill struct fb_info */
@@ -281,8 +274,10 @@ xilinxfb_drv_probe(struct device *dev)
         }
 
         drvdata->info.flags = FBINFO_DEFAULT;
-        xilinx_fb_var.height = pdata->screen_height_mm;
-        xilinx_fb_var.width = pdata->screen_width_mm;
+        if (pdata) {
+                xilinx_fb_var.height = pdata->screen_height_mm;
+                xilinx_fb_var.width = pdata->screen_width_mm;
+        }
         drvdata->info.var = xilinx_fb_var;
 
         /* Register new frame buffer */