From f5919b65d4c671fd5083838c7a445f319f9a13c8 Mon Sep 17 00:00:00 2001 From: Stijn Tintel Date: Sat, 10 Nov 2018 13:03:18 +0200 Subject: brcm2708: add kernel 4.14 support Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel --- ...-false-positive-WARN-backtrace-on-refcoun.patch | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.14/950-0175-drm-vc4-Fix-false-positive-WARN-backtrace-on-refcoun.patch (limited to 'target/linux/brcm2708/patches-4.14/950-0175-drm-vc4-Fix-false-positive-WARN-backtrace-on-refcoun.patch') diff --git a/target/linux/brcm2708/patches-4.14/950-0175-drm-vc4-Fix-false-positive-WARN-backtrace-on-refcoun.patch b/target/linux/brcm2708/patches-4.14/950-0175-drm-vc4-Fix-false-positive-WARN-backtrace-on-refcoun.patch new file mode 100644 index 0000000000..0d3b4520d3 --- /dev/null +++ b/target/linux/brcm2708/patches-4.14/950-0175-drm-vc4-Fix-false-positive-WARN-backtrace-on-refcoun.patch @@ -0,0 +1,41 @@ +From 5537bac0e5c8f3634c5595c21c7d63f0c0263e0e Mon Sep 17 00:00:00 2001 +From: Boris Brezillon +Date: Wed, 22 Nov 2017 21:39:28 +0100 +Subject: [PATCH 175/454] drm/vc4: Fix false positive WARN() backtrace on + refcount_inc() usage + +With CONFIG_REFCOUNT_FULL enabled, refcount_inc() complains when it's +passed a refcount object that has its counter set to 0. In this driver, +this is a valid use case since we want to increment ->usecnt only when +the BO object starts to be used by real HW components and this is +definitely not the case when the BO is created. + +Fix the problem by using refcount_inc_not_zero() instead of +refcount_inc() and fallback to refcount_set(1) when +refcount_inc_not_zero() returns false. Note that this 2-steps operation +is not racy here because the whole section is protected by a mutex +which guarantees that the counter does not change between the +refcount_inc_not_zero() and refcount_set() calls. + +Fixes: b9f19259b84d ("drm/vc4: Add the DRM_IOCTL_VC4_GEM_MADVISE ioctl") +Reported-by: Stefan Wahren +Signed-off-by: Boris Brezillon +Acked-by: Eric Anholt +Link: https://patchwork.freedesktop.org/patch/msgid/20171122203928.28135-1-boris.brezillon@free-electrons.com +(cherry picked from commit 5bfd40139d55790cbc8e56ad1ce4f974f1fa186d) +--- + drivers/gpu/drm/vc4/vc4_bo.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +--- a/drivers/gpu/drm/vc4/vc4_bo.c ++++ b/drivers/gpu/drm/vc4/vc4_bo.c +@@ -639,7 +639,8 @@ int vc4_bo_inc_usecnt(struct vc4_bo *bo) + mutex_lock(&bo->madv_lock); + switch (bo->madv) { + case VC4_MADV_WILLNEED: +- refcount_inc(&bo->usecnt); ++ if (!refcount_inc_not_zero(&bo->usecnt)) ++ refcount_set(&bo->usecnt, 1); + ret = 0; + break; + case VC4_MADV_DONTNEED: -- cgit v1.2.3