[PATCH] bulkmem.c - null ptr fixes for 2.4.4

[Praveen Srinivasan]

Hi,
Using the Stanford checker, we searched for null-pointer bugs in the linux 
kernel code. This patch fixes numerous unchecked pointers in the PCMCIA 
bulkmem driver. 

Praveen Srinivasan and Frederick Akalin

--- ../linux/./drivers/pcmcia/bulkmem.c	Tue Mar  6 19:28:32 2001
+++ ./drivers/pcmcia/bulkmem.c	Mon May  7 21:53:49 2001
@@ -229,6 +229,10 @@
 	else {
 	    erase->State = 1;
 	    busy = kmalloc(sizeof(erase_busy_t), GFP_KERNEL);
+
+	    if(busy == NULL) {
+	      return;
+	    }
 	    busy->erase = erase;
 	    busy->client = handle;
 	    init_timer(&busy->timeout);
@@ -360,6 +364,10 @@
 	if ((device.dev[i].type != CISTPL_DTYPE_NULL) &&
 	    (device.dev[i].size != 0)) {
 	    r = kmalloc(sizeof(*r), GFP_KERNEL);
+	    if(r == NULL) {
+	      return;
+	    }
+
 	    r->region_magic = REGION_MAGIC;
 	    r->state = 0;
 	    r->dev_info[0] = '\0';