Initial commit

8 files changed, 135 insertions, 0 deletions

diff --git a/.SRCINFO b/.SRCINFO
new file mode 100644
index 000000000000..9940cca7ebe5
--- /dev/null
+++ b/.SRCINFO
@@ -0,0 +1,19 @@
+pkgbase = hid-sony-panic-fix-dkms
+	pkgdesc = A quick hack to the hid-sony driver meant for the third party / clone DS4 controllers that do not support HID feature report 0x81.
+	pkgver = 5.19.8
+	pkgrel = 1
+	arch = x86_64
+	license = GPL2
+	depends = dkms
+	source = hid-sony.c::https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/plain/drivers/hid/hid-sony.c?h=v5.19.8
+	source = hid-ids.h::https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/plain/drivers/hid/hid-ids.h?h=v5.19.8
+	source = Makefile
+	source = hid-sony-panic-fix-dkms.dkms
+	source = hid-sony-blacklist.modprobe
+	sha256sums = d06b36d69f723777a4cba2fcae34523002e39a9549e2e67136e520627f1a173f
+	sha256sums = 788bfdc38373898038b62e75f6a939105105843fcf0409fe39d0f2ea490f1642
+	sha256sums = 72ee83c2a199afb5e30e8a6fb71c73667d86845284c2b6ca760e9d7b7b6a65d6
+	sha256sums = 04a25acef8059630188ebbf398115c87bf27f97a8e37ce9a10d1d30387800610
+	sha256sums = f4ab0b6941e353e861007a0bb6c468b4a7d027c56d530056fa686ad837616635
+
+pkgname = hid-sony-panic-fix-dkms
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000000..1703f277d5af
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+src
+pkg
+hid-sony-panic-fix-dkms-*.pkg.tar.zst
+hid-sony.c
+hid-ids.h
diff --git a/Makefile b/Makefile
new file mode 100644
index 000000000000..5fdfed3eabd1
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+obj-m = hid-sony-panic-fix.o
+
+KVERSION = $(shell uname -r)
+all:
+	make -C /lib/modules/$(KVERSION)/build V=1 M=$(PWD) modules
+clean:
+	test ! -d /lib/modules/$(KVERSION) || make -C /lib/modules/$(KVERSION)/build V=1 M=$(PWD) clean
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 000000000000..943d9b66efa0
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,46 @@
+# Maintainer: Atahan Acar <atahan at acar dot pw>
+# pkgbuild based on https://github.com/Kyuunex/hid-sony-clone-fix-dkms
+
+_pkgbase='hid-sony-panic-fix'
+pkgname=${_pkgbase}-dkms
+pkgver=5.19.8
+pkgrel=1
+pkgdesc="A quick hack to the hid-sony driver meant for the third party / clone DS4 controllers that do not support HID feature report 0x81."
+_srctag=v${pkgver}
+license=('GPL2')
+arch=('x86_64')
+depends=('dkms')
+source=("hid-sony.c::https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/plain/drivers/hid/hid-sony.c?h=${_srctag}"
+        "hid-ids.h::https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/plain/drivers/hid/hid-ids.h?h=${_srctag}"
+        "Makefile"
+        "hid-sony-panic-fix-dkms.dkms"
+        "hid-sony-blacklist.modprobe")
+sha256sums=('d06b36d69f723777a4cba2fcae34523002e39a9549e2e67136e520627f1a173f'
+            '788bfdc38373898038b62e75f6a939105105843fcf0409fe39d0f2ea490f1642'
+            '72ee83c2a199afb5e30e8a6fb71c73667d86845284c2b6ca760e9d7b7b6a65d6'
+            '04a25acef8059630188ebbf398115c87bf27f97a8e37ce9a10d1d30387800610'
+            'f4ab0b6941e353e861007a0bb6c468b4a7d027c56d530056fa686ad837616635')
+
+prepare(){
+    local workdir="${srcdir}/workdir"
+    mkdir -p "${workdir}"
+    cp "${srcdir}/hid-sony.c" "${workdir}"
+    patch -d "${workdir}" -Np3 -i "${srcdir}/../hid-sony-panic-fix.patch"
+}
+
+package() {
+    local dest="${pkgdir}/usr/src/${_pkgbase}-${pkgver}"
+    install -d "${dest}"
+    install -m 644 -T "${srcdir}/workdir/hid-sony.c" "${dest}/${_pkgbase}.c"
+    install -m 644 -T "${srcdir}/hid-ids.h" "${dest}/hid-ids.h"
+    install -m 644 -T "${srcdir}/Makefile" "${dest}/Makefile"
+    install -m 644 -T "${srcdir}/hid-sony-panic-fix-dkms.dkms" "${dest}/dkms.conf"
+
+    sed -e "s/@_PKGBASE@/${_pkgbase}/" \
+        -e "s/@PKGVER@/${pkgver}/" \
+        -i "${pkgdir}/usr/src/${_pkgbase}-${pkgver}/dkms.conf"
+
+    # Blacklist the original hid_sony module
+    install -dm755 "${pkgdir}/usr/lib/modprobe.d"
+    install -Dm644 "${srcdir}/hid-sony-blacklist.modprobe" "${pkgdir}/usr/lib/modprobe.d/hid-sony-blacklist.conf"
+}
diff --git a/README b/README
new file mode 100644
index 000000000000..773af1d106d6
--- /dev/null
+++ b/README
@@ -0,0 +1,7 @@
+hid-sony-panic-fix-dkms
+=======================
+This hack is based on https://github.com/Kyuunex/hid-sony-clone-fix-dkms
+but it also adds a check to avoid a divide by zero. It removes the unused code
+instead of just changing the value of the variable.
+
+Use at your own risk.
diff --git a/hid-sony-blacklist.modprobe b/hid-sony-blacklist.modprobe
new file mode 100644
index 000000000000..e6910aafcbbd
--- /dev/null
+++ b/hid-sony-blacklist.modprobe
@@ -0,0 +1 @@
+blacklist hid_sony
diff --git a/hid-sony-panic-fix-dkms.dkms b/hid-sony-panic-fix-dkms.dkms
new file mode 100644
index 000000000000..8abb6f27d87d
--- /dev/null
+++ b/hid-sony-panic-fix-dkms.dkms
@@ -0,0 +1,7 @@
+PACKAGE_NAME="@_PKGBASE@"
+PACKAGE_VERSION="@PKGVER@"
+MAKE[0]="make KVERSION=$kernelver"
+CLEAN="make clean"
+BUILT_MODULE_NAME[0]="@_PKGBASE@"
+DEST_MODULE_LOCATION[0]="/kernel/drivers/hid"
+AUTOINSTALL="yes"
diff --git a/hid-sony-panic-fix.patch b/hid-sony-panic-fix.patch
new file mode 100644
index 000000000000..c8060b3a363e
--- /dev/null
+++ b/hid-sony-panic-fix.patch
@@ -0,0 +1,43 @@
+--- a/drivers/hid/hid-sony.c	2022-09-15 20:19:32.729266754 +0300
++++ b/drivers/hid/hid-sony.c	2022-09-15 20:35:35.081264397 +0300
+@@ -1132,11 +1132,14 @@
+ 		 * Note: we swap numerator 'x' and 'numer' in mult_frac for
+ 		 *       precision reasons so we don't need 64-bit.
+ 		 */
+-		int calib_data = mult_frac(calib->sens_numer,
+-					   raw_data - calib->bias,
+-					   calib->sens_denom);
++		if (calib->sens_denom != 0) {
++			int calib_data = mult_frac(calib->sens_numer,
++					raw_data - calib->bias,
++					calib->sens_denom);
++
++			input_report_abs(sc->sensor_dev, calib->abs_code, calib_data);
++		}
+ 
+-		input_report_abs(sc->sensor_dev, calib->abs_code, calib_data);
+ 		offset += 2;
+ 	}
+ 	input_sync(sc->sensor_dev);
+@@ -2617,21 +2620,6 @@
+ 		if (!buf)
+ 			return -ENOMEM;
+ 
+-		/*
+-		 * The MAC address of a DS4 controller connected via USB can be
+-		 * retrieved with feature report 0x81. The address begins at
+-		 * offset 1.
+-		 */
+-		ret = hid_hw_raw_request(sc->hdev, 0x81, buf,
+-				DS4_FEATURE_REPORT_0x81_SIZE, HID_FEATURE_REPORT,
+-				HID_REQ_GET_REPORT);
+-
+-		if (ret != DS4_FEATURE_REPORT_0x81_SIZE) {
+-			hid_err(sc->hdev, "failed to retrieve feature report 0x81 with the DualShock 4 MAC address\n");
+-			ret = ret < 0 ? ret : -EINVAL;
+-			goto out_free;
+-		}
+-
+ 		memcpy(sc->mac_address, &buf[1], sizeof(sc->mac_address));
+ 
+ 		snprintf(sc->hdev->uniq, sizeof(sc->hdev->uniq),