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

[Praveen Srinivasan]

Hi,
This patch fixes a couple of errors in the scsi driver code (sd.c).

Praveen Srinivasan and Frederick Akalin

--- ../linux/./drivers/scsi/sd.c        Sat Feb  3 11:45:55 2001
+++ ./drivers/scsi/sd.c Mon May  7 22:09:58 2001
@@ -734,8 +734,15 @@
         */
 
        SRpnt = scsi_allocate_request(rscsi_disks[i].device);
+       if(SRpnt == NULL) {
+         return i;
+       }
 
        buffer = (unsigned char *) scsi_malloc(512);
+       
+       if(buffer == NULL) {
+         return i;
+       }
 
        spintime = 0;
 
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