diff --git a/alarm/libbcm2835/PKGBUILD b/alarm/libbcm2835/PKGBUILD
index 70660bf98..6d49fee68 100644
--- a/alarm/libbcm2835/PKGBUILD
+++ b/alarm/libbcm2835/PKGBUILD
@@ -4,15 +4,21 @@ buildarch=16
 
 _pkgbasename=bcm2835
 pkgname=libbcm2835
-pkgver=1.37
+pkgver=1.42
 pkgrel=1 
 pkgdesc="C library for Broadcom BCM 2835 as used in Raspberry Pi"
 url="http://www.airspayce.com/mikem/bcm2835/"
-arch=('armv6h')
+arch=('armv6h' 'armv7h')
 license=('GPL')
 options=('staticlibs')
-source=(http://www.airspayce.com/mikem/${_pkgbasename}/${_pkgbasename}-${pkgver}.tar.gz)
-md5sums=('2314bcbd2e1c6a164dbeda58abfb9c04')
+source=(http://www.airspayce.com/mikem/${_pkgbasename}/${_pkgbasename}-${pkgver}.tar.gz bcm2835.patch)
+md5sums=('3f60ac30ada6b8f7036243f13da441ba'
+         '62085703dbef25ed501002dec077c3d5')
+
+prepare() {
+  cd ${srcdir}/${_pkgbasename}-${pkgver}
+  patch -p1 -i "$srcdir/bcm2835.patch"
+}
 
 build() {
   cd ${srcdir}/${_pkgbasename}-${pkgver}
diff --git a/alarm/libbcm2835/bcm2835.patch b/alarm/libbcm2835/bcm2835.patch
new file mode 100644
index 000000000..7a07200dd
--- /dev/null
+++ b/alarm/libbcm2835/bcm2835.patch
@@ -0,0 +1,39 @@
+Only in bcm2835-1.42: Makefile
+Only in bcm2835-1.42: config.h
+Only in bcm2835-1.42: config.log
+Only in bcm2835-1.42: config.status
+Only in bcm2835-1.42/doc: Makefile
+Only in bcm2835-1.42/src: .deps
+Only in bcm2835-1.42/src: Makefile
+diff -u -r bcm2835-1.42-orig/src/bcm2835.c bcm2835-1.42/src/bcm2835.c
+--- bcm2835-1.42-orig/src/bcm2835.c	2015-03-09 06:00:44.000000000 +0100
++++ bcm2835-1.42/src/bcm2835.c	2015-03-22 19:29:37.531488655 +0100
+@@ -122,9 +122,9 @@
+        uint32_t ret;
+ #ifdef BCM2835_HAVE_DMB
+        __asm__(        "\
+-  dmb                    \
+-  ldr %[ret], [%[paddr]] \
+-  dmb								\
++  dmb                   \n\
++  ldr %[ret], [%[paddr]]\n\
++  dmb                   \n\
+ " : [ret] "=r" (ret) : [paddr] "r" (paddr) : "memory" );
+ #else
+        __asm__(            "\
+@@ -176,9 +176,9 @@
+ 	/* Following code provides memory barriers before and after the write */
+ #ifdef BCM2835_HAVE_DMB
+        __asm__(        "\
+-  dmb			   \
+-  str %[value], [%[paddr]] \
+-  dmb								\
++  dmb                     \n\
++  str %[value], [%[paddr]]\n\
++  dmb                     \n\
+ " : : [paddr] "r" (paddr), [value] "r" (value) : "memory" );
+ #else
+        __asm__(            "\
+Only in bcm2835-1.42/src: bcm2835.o
+Only in bcm2835-1.42/src: libbcm2835.a
+Only in bcm2835-1.42: stamp-h1