Merge git://git.infradead.org/users/dwmw2/random-2.6

* git://git.infradead.org/users/dwmw2/random-2.6:
  [MTD] mtdchar.c: Fix regression in MEMGETREGIONINFO ioctl()
  dabusb_fpga_download(): fix a memory leak
  Remove '#include <stddef.h>' from mm/page_isolation.c
  Fix modules_install on RO nfs-exported trees.

drivers/media/video/dabusb.c

@@ -403,6 +403,7 @@ static int dabusb_fpga_download (pdabusb_t s, const char *fname)
 	ret = request_firmware(&fw, "dabusb/bitstream.bin", &s->usbdev->dev);
 	if (ret) {
 		err("Failed to load \"dabusb/bitstream.bin\": %d\n", ret);
+		kfree(b);
 		return ret;
 	}
 

drivers/mtd/mtdchar.c

@@ -410,16 +410,20 @@ static int mtd_ioctl(struct inode *inode, struct file *file,
 
 	case MEMGETREGIONINFO:
 	{
-		struct region_info_user ur;
+		uint32_t ur_idx;
+		struct mtd_erase_region_info *kr;
+		struct region_info_user *ur = (struct region_info_user *) argp;
 
-		if (copy_from_user(&ur, argp, sizeof(struct region_info_user)))
+		if (get_user(ur_idx, &(ur->regionindex)))
 			return -EFAULT;
 
-		if (ur.regionindex >= mtd->numeraseregions)
-			return -EINVAL;
-		if (copy_to_user(argp, &(mtd->eraseregions[ur.regionindex]),
-				sizeof(struct mtd_erase_region_info)))
+		kr = &(mtd->eraseregions[ur_idx]);
+
+		if (put_user(kr->offset, &(ur->offset))
+		    || put_user(kr->erasesize, &(ur->erasesize))
+		    || put_user(kr->numblocks, &(ur->numblocks)))
 			return -EFAULT;
+
 		break;
 	}
 

firmware/Makefile

@@ -146,15 +146,27 @@ $(patsubst %,$(obj)/%.gen.o, $(fw-external-y)): $(obj)/%.gen.o: $(fwdir)/%
 $(obj)/%: $(obj)/%.ihex | $(objtree)/$(obj)/$$(dir %)
 	$(call cmd,ihex)
 
+# Don't depend on ihex2fw if we're installing and it already exists.
+# Putting it after | in the dependencies doesn't seem sufficient when
+# we're installing after a cross-compile, because ihex2fw has dependencies
+# on stuff like /usr/lib/gcc/ppc64-redhat-linux/4.3.0/include/stddef.h and 
+# thus wants to be rebuilt. Which it can't be, if the prebuilt kernel tree
+# is exported read-only for someone to run 'make install'.
+ifeq ($(INSTALL):$(wildcard $(obj)/ihex2fw),install:$(obj)/ihex2fw)
+ihex2fw_dep :=
+else
+ihex2fw_dep := $(obj)/ihex2fw
+endif
+
 # .HEX is also Intel HEX, but where the offset and length in each record
 # is actually meaningful, because the firmware has to be loaded in a certain
 # order rather than as a single binary blob. Thus, we convert them into our
 # more compact binary representation of ihex records (<linux/ihex.h>)
-$(obj)/%.fw: $(obj)/%.HEX $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %)
+$(obj)/%.fw: $(obj)/%.HEX $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
 	$(call cmd,ihex2fw)
 
 # .H16 is our own modified form of Intel HEX, with 16-bit length for records.
-$(obj)/%.fw: $(obj)/%.H16 $(obj)/ihex2fw | $(objtree)/$(obj)/$$(dir %)
+$(obj)/%.fw: $(obj)/%.H16 $(ihex2fw_dep) | $(objtree)/$(obj)/$$(dir %)
 	$(call cmd,h16tofw)
 
 $(firmware-dirs):

mm/page_isolation.c

@@ -2,7 +2,6 @@
  * linux/mm/page_isolation.c
  */
 
-#include <stddef.h>
 #include <linux/mm.h>
 #include <linux/page-isolation.h>
 #include <linux/pageblock-flags.h>