[PATCH] parisc: pci-dma.c: audit return code of create_proc_read_entry()

From: Christophe Lucas <clucas@rotomalug.org>

Acked-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

Index: linux-kj/arch/parisc/kernel/pci-dma.c
===================================================================
--- linux-kj.orig/arch/parisc/kernel/pci-dma.c	2005-09-21 01:19:06.000000000 +0400
+++ linux-kj/arch/parisc/kernel/pci-dma.c	2005-09-21 01:40:11.000000000 +0400
@@ -333,18 +333,28 @@ pcxl_free_range(unsigned long vaddr, siz
 static int __init
 pcxl_dma_init(void)
 {
-    if (pcxl_dma_start == 0)
-	return 0;
+	if (pcxl_dma_start == 0)
+		return 0;
 
-    spin_lock_init(&pcxl_res_lock);
-    pcxl_res_size = PCXL_DMA_MAP_SIZE >> (PAGE_SHIFT + 3);
-    pcxl_res_hint = 0;
-    pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
+	spin_lock_init(&pcxl_res_lock);
+	pcxl_res_size = PCXL_DMA_MAP_SIZE >> (PAGE_SHIFT + 3);
+	pcxl_res_hint = 0;
+	pcxl_res_map = (char *)__get_free_pages(GFP_KERNEL,
 					    get_order(pcxl_res_size));
-    memset(pcxl_res_map, 0, pcxl_res_size);
-    proc_gsc_root = proc_mkdir("gsc", 0);
-    create_proc_info_entry("dino", 0, proc_gsc_root, pcxl_proc_info);
-    return 0;
+	memset(pcxl_res_map, 0, pcxl_res_size);
+	proc_gsc_root = proc_mkdir("gsc", 0);
+	if (!proc_gsc_root)
+    		printk(KERN_WARNING
+			"pcxl_dma_init: unable to create gsc /proc dir entry\n");
+	else {
+		struct proc_dir_entry* ent;
+		ent = create_proc_info_entry("dino", 0,
+				proc_gsc_root, pcxl_proc_info);
+		if (!ent)
+			printk(KERN_WARNING
+				"pci-dma.c: unable to create dino /proc entry\n");
+	}
+	return 0;
 }
 
 __initcall(pcxl_dma_init);