mtools: fix race issue while mtools invoked frequently

While invoking mtools frequently, the unblocking request
caused race issue. Here is an example of syslinux
[snip]
dd if=/dev/zero of=floppy.img bs=1024 count=144
losetup /dev/loop1 floppy.img
mkdosfs /dev/loop1
syslinux -i /dev/loop1
|plain floppy: device "/proc/6351/fd/3" busy (Resource temporarily unavailable):
|Cannot initialize 'S:'
|Bad target s:/ldlinux.sys
[snip]

The idea is from:
https://bugzilla.redhat.com/show_bug.cgi?id=1235016
https://groups.google.com/a/chromium.org/forum/#!msg/chromium-os-dev/bRPUCFHoBTQ/ZjB8kjjx1vUJ

(From OE-Core rev: 927fad7881841a58e1d88f3a6ce070eaa66ba1a5)

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/recipes-devtools/mtools/mtools_4.0.18.bb b/meta/recipes-devtools/mtools/mtools_4.0.18.bb
index dcd32ed94c..91f7b7c610 100644
--- a/meta/recipes-devtools/mtools/mtools_4.0.18.bb
+++ b/meta/recipes-devtools/mtools/mtools_4.0.18.bb
@@ -31,6 +31,7 @@ SRC_URI = "${GNU_MIRROR}/mtools/mtools-${PV}.tar.bz2 \
            file://mtools-makeinfo.patch \
            file://no-x11.gplv3.patch \
            file://0001-Continue-even-if-fs-size-is-not-divisible-by-sectors.patch \
+           file://0001-remove-LOCK_NB-to-use-blocking-request.patch \
            "
 
 SRC_URI_append_class-native = " file://disable-hardcoded-configs.patch"