grub: fix build with squashfs support enabled

(From OE-Core rev: 342f7cc6b07559238274ff2fe281afa4ea742052)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 25 insertions, 0 deletions

diff --git a/meta/recipes-bsp/grub/files/fix.build.with.squashfs.patch b/meta/recipes-bsp/grub/files/fix.build.with.squashfs.patch
new file mode 100644
index 0000000000..2c2d2ea0b1
--- /dev/null
+++ b/meta/recipes-bsp/grub/files/fix.build.with.squashfs.patch
@@ -0,0 +1,24 @@
+When squashfs support is enabled, the build fails with:
+
+../grub-2.02/grub-core/fs/squash4.c: In function 'direct_read':
+../grub-2.02/grub-core/fs/squash4.c:868:10: error: 'err' may be used uninitialized in this function [-Werror=maybe-uninitialized]
+       if (err)
+          ^
+cc1: all warnings being treated as errors
+Makefile:7272: recipe for target 'grub-core/fs/libgrubmods_a-squash4.o' failed
+
+Upstream-Status: Pending (should be fixed in gnulib which is then rarely updated in grub)
+
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+
+--- grub-2.02/grub-core/fs/squash4.c    2019-03-10 20:00:14.070468728 +0000
++++ grub-2.02.fixed/grub-core/fs/squash4.c      2019-03-10 19:58:31.382477818 +0000
+@@ -746,7 +746,7 @@
+             struct grub_squash_cache_inode *ino,
+             grub_off_t off, char *buf, grub_size_t len)
+ {
+-  grub_err_t err;
++  grub_err_t err = 0;
+   grub_off_t cumulated_uncompressed_size = 0;
+   grub_uint64_t a = 0;
+   grub_size_t i;
diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index 3f3165c264..c6994723f9 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -22,6 +22,7 @@ SRC_URI = "https://ftp.gnu.org/gnu/grub/grub-${PV}.tar.gz \
            file://0001-x86-64-Treat-R_X86_64_PLT32-as-R_X86_64_PC32.patch \
            file://0001-grub-setup-Debug-message-cleanup.patch \
            file://disable-address-of-packed-member.patch \
+           file://fix.build.with.squashfs.patch \
 "
 SRC_URI[md5sum] = "1116d1f60c840e6dbd67abbc99acb45d"
 SRC_URI[sha256sum] = "660ee136fbcee08858516ed4de2ad87068bfe1b6b8b37896ce3529ff054a726d"