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[PATCH V5 3/8] MIPS: Ensure pmd_present() returns false after pmd_mknotpresent()

by Huacai Chen

This patch is borrowed from ARM64 to ensure pmd_present() returns false after pmd_mknotpresent(). This is needed for THP. Cc: <stable(a)vger.kernel.org> # 3.8+ References: 5bb1cc0ff9a6 ("arm64: Ensure pmd_present() returns false after pmd_mknotpresent()") Reviewed-by: James Hogan <jhogan(a)kernel.org> Signed-off-by: Huacai Chen <chenhc(a)lemote.com> --- arch/mips/include/asm/pgtable-64.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h index 0036ea0..93a9dce 100644 --- a/arch/mips/include/asm/pgtable-64.h +++ b/arch/mips/include/asm/pgtable-64.h @@ -265,6 +265,11 @@ static inline int pmd_bad(pmd_t pmd) static inline int pmd_present(pmd_t pmd) { +#ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT + if (unlikely(pmd_val(pmd) & _PAGE_HUGE)) + return pmd_val(pmd) & _PAGE_PRESENT; +#endif + return pmd_val(pmd) != (unsigned long) invalid_pte_table; } -- 2.7.0

6 years, 11 months

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[PATCH V5 2/8] MIPS: c-r4k: Add r4k_blast_scache_node for Loongson-3

by Huacai Chen

For multi-node Loongson-3 (NUMA configuration), r4k_blast_scache() can only flush Node-0's scache. So we add r4k_blast_scache_node() by using (CAC_BASE | (node_id << NODE_ADDRSPACE_SHIFT)) instead of CKSEG0 as the start address. Cc: <stable(a)vger.kernel.org> # 3.15+ Signed-off-by: Huacai Chen <chenhc(a)lemote.com> --- arch/mips/include/asm/mach-loongson64/mmzone.h | 1 + arch/mips/include/asm/mmzone.h | 8 +++++ arch/mips/include/asm/r4kcache.h | 25 +++++++++++++++ arch/mips/mm/c-r4k.c | 44 ++++++++++++++++++++++---- 4 files changed, 71 insertions(+), 7 deletions(-) diff --git a/arch/mips/include/asm/mach-loongson64/mmzone.h b/arch/mips/include/asm/mach-loongson64/mmzone.h index c9f7e23..59c8b11 100644 --- a/arch/mips/include/asm/mach-loongson64/mmzone.h +++ b/arch/mips/include/asm/mach-loongson64/mmzone.h @@ -21,6 +21,7 @@ #define NODE3_ADDRSPACE_OFFSET 0x300000000000UL #define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT) +#define nid_to_addrbase(nid) ((nid) << NODE_ADDRSPACE_SHIFT) #define LEVELS_PER_SLICE 128 diff --git a/arch/mips/include/asm/mmzone.h b/arch/mips/include/asm/mmzone.h index f085fba..2a0fe1d 100644 --- a/arch/mips/include/asm/mmzone.h +++ b/arch/mips/include/asm/mmzone.h @@ -9,6 +9,14 @@ #include <asm/page.h> #include <mmzone.h> +#ifndef pa_to_nid +#define pa_to_nid(addr) 0 +#endif + +#ifndef nid_to_addrbase +#define nid_to_addrbase(nid) 0 +#endif + #ifdef CONFIG_DISCONTIGMEM #define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT) diff --git a/arch/mips/include/asm/r4kcache.h b/arch/mips/include/asm/r4kcache.h index d19b2d6..0815c2a 100644 --- a/arch/mips/include/asm/r4kcache.h +++ b/arch/mips/include/asm/r4kcache.h @@ -674,4 +674,25 @@ __BUILD_BLAST_CACHE_RANGE(s, scache, Hit_Writeback_Inv_SD, , ) __BUILD_BLAST_CACHE_RANGE(inv_d, dcache, Hit_Invalidate_D, , ) __BUILD_BLAST_CACHE_RANGE(inv_s, scache, Hit_Invalidate_SD, , ) +/* Currently, this is very specific to Loongson-3 */ +#define __BUILD_BLAST_CACHE_NODE(pfx, desc, indexop, hitop, lsize) \ +static inline void blast_##pfx##cache##lsize##_node(long node) \ +{ \ + unsigned long start = CAC_BASE | nid_to_addrbase(node); \ + unsigned long end = start + current_cpu_data.desc.waysize; \ + unsigned long ws_inc = 1UL << current_cpu_data.desc.waybit; \ + unsigned long ws_end = current_cpu_data.desc.ways << \ + current_cpu_data.desc.waybit; \ + unsigned long ws, addr; \ + \ + for (ws = 0; ws < ws_end; ws += ws_inc) \ + for (addr = start; addr < end; addr += lsize * 32) \ + cache##lsize##_unroll32(addr|ws, indexop); \ +} + +__BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 16) +__BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 32) +__BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 64) +__BUILD_BLAST_CACHE_NODE(s, scache, Index_Writeback_Inv_SD, Hit_Writeback_Inv_SD, 128) + #endif /* _ASM_R4KCACHE_H */ diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 7e430b4..96d666a 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -459,11 +459,28 @@ static void r4k_blast_scache_setup(void) r4k_blast_scache = blast_scache128; } +static void (*r4k_blast_scache_node)(long node); + +static void r4k_blast_scache_node_setup(void) +{ + unsigned long sc_lsize = cpu_scache_line_size(); + + if (current_cpu_type() != CPU_LOONGSON3) + r4k_blast_scache_node = (void *)cache_noop; + else if (sc_lsize == 16) + r4k_blast_scache_node = blast_scache16_node; + else if (sc_lsize == 32) + r4k_blast_scache_node = blast_scache32_node; + else if (sc_lsize == 64) + r4k_blast_scache_node = blast_scache64_node; + else if (sc_lsize == 128) + r4k_blast_scache_node = blast_scache128_node; +} + static inline void local_r4k___flush_cache_all(void * args) { switch (current_cpu_type()) { case CPU_LOONGSON2: - case CPU_LOONGSON3: case CPU_R4000SC: case CPU_R4000MC: case CPU_R4400SC: @@ -480,6 +497,11 @@ static inline void local_r4k___flush_cache_all(void * args) r4k_blast_scache(); break; + case CPU_LOONGSON3: + /* Use get_ebase_cpunum() for both NUMA=y/n */ + r4k_blast_scache_node(get_ebase_cpunum() >> 2); + break; + case CPU_BMIPS5000: r4k_blast_scache(); __sync(); @@ -840,10 +862,14 @@ static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size) preempt_disable(); if (cpu_has_inclusive_pcaches) { - if (size >= scache_size) - r4k_blast_scache(); - else + if (size >= scache_size) { + if (current_cpu_type() != CPU_LOONGSON3) + r4k_blast_scache(); + else + r4k_blast_scache_node(pa_to_nid(addr)); + } else { blast_scache_range(addr, addr + size); + } preempt_enable(); __sync(); return; @@ -877,9 +903,12 @@ static void r4k_dma_cache_inv(unsigned long addr, unsigned long size) preempt_disable(); if (cpu_has_inclusive_pcaches) { - if (size >= scache_size) - r4k_blast_scache(); - else { + if (size >= scache_size) { + if (current_cpu_type() != CPU_LOONGSON3) + r4k_blast_scache(); + else + r4k_blast_scache_node(pa_to_nid(addr)); + } else { /* * There is no clearly documented alignment requirement * for the cache instruction on MIPS processors and @@ -1918,6 +1947,7 @@ void r4k_cache_init(void) r4k_blast_scache_page_setup(); r4k_blast_scache_page_indexed_setup(); r4k_blast_scache_setup(); + r4k_blast_scache_node_setup(); #ifdef CONFIG_EVA r4k_blast_dcache_user_page_setup(); r4k_blast_icache_user_page_setup(); -- 2.7.0

6 years, 11 months

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FAILED: patch "[PATCH] ovl: fix recursive oi->lock in ovl_link()" failed to apply to 4.18-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.18-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 6cd078702f2f33cb6b19a682de3e9184112f1a46 Mon Sep 17 00:00:00 2001 From: Amir Goldstein <amir73il(a)gmail.com> Date: Thu, 18 Oct 2018 09:45:49 +0300 Subject: [PATCH] ovl: fix recursive oi->lock in ovl_link() linking a non-copied-up file into a non-copied-up parent results in a nested call to mutex_lock_interruptible(&oi->lock). Fix this by copying up target parent before ovl_nlink_start(), same as done in ovl_rename(). ~/unionmount-testsuite$ ./run --ov -s ~/unionmount-testsuite$ ln /mnt/a/foo100 /mnt/a/dir100/ WARNING: possible recursive locking detected -------------------------------------------- ln/1545 is trying to acquire lock: 00000000bcce7c4c (&ovl_i_lock_key[depth]){+.+.}, at: ovl_copy_up_start+0x28/0x7d but task is already holding lock: 0000000026d73d5b (&ovl_i_lock_key[depth]){+.+.}, at: ovl_nlink_start+0x3c/0xc1 [SzM: this seems to be a false positive, but doing the copy-up first is harmless and removes the lockdep splat] Reported-by: syzbot+3ef5c0d1a5cb0b21e6be(a)syzkaller.appspotmail.com Fixes: 5f8415d6b87e ("ovl: persistent overlay inode nlink for...") Cc: <stable(a)vger.kernel.org> # v4.13 Signed-off-by: Amir Goldstein <amir73il(a)gmail.com> Signed-off-by: Miklos Szeredi <mszeredi(a)redhat.com> diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c index 276914ae3c60..e1a55ecb7aba 100644 --- a/fs/overlayfs/dir.c +++ b/fs/overlayfs/dir.c @@ -663,6 +663,10 @@ static int ovl_link(struct dentry *old, struct inode *newdir, if (err) goto out_drop_write; + err = ovl_copy_up(new->d_parent); + if (err) + goto out_drop_write; + if (ovl_is_metacopy_dentry(old)) { err = ovl_set_redirect(old, false); if (err)

6 years, 11 months

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stable-rc/linux-4.4.y boot: 65 boots: 1 failed, 50 passed with 14 offline (v4.4.163-107-g3c957d7bc2fc)

by kernelci.org bot

stable-rc/linux-4.4.y boot: 65 boots: 1 failed, 50 passed with 14 offline (v4.4.163-107-g3c957d7bc2fc) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.4.y/kernel/v4.4.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.163-107… Tree: stable-rc Branch: linux-4.4.y Git Describe: v4.4.163-107-g3c957d7bc2fc Git Commit: 3c957d7bc2fc9c7bbe5200a2b7f0d6fc7bd391c0 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 37 unique boards, 18 SoC families, 15 builds out of 178 Boot Failure Detected: arm: multi_v7_defconfig stih410-b2120: 1 failed lab Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab sunxi_defconfig: sun5i-r8-chip: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4_xplained: 1 offline lab multi_v7_defconfig: alpine-db: 1 offline lab am335x-boneblack: 1 offline lab at91-sama5d4_xplained: 1 offline lab exynos5800-peach-pi: 1 offline lab socfpga_cyclone5_de0_sockit: 1 offline lab sun5i-r8-chip: 1 offline lab tegra124-jetson-tk1: 1 offline lab arm64: defconfig: apq8016-sbc: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

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stable-rc/linux-4.14.y boot: 80 boots: 0 failed, 62 passed with 18 offline (v4.14.81-24-gf559965a016b)

by kernelci.org bot

stable-rc/linux-4.14.y boot: 80 boots: 0 failed, 62 passed with 18 offline (v4.14.81-24-gf559965a016b) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.14.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.14.y/kernel/v4.14.81-24… Tree: stable-rc Branch: linux-4.14.y Git Describe: v4.14.81-24-gf559965a016b Git Commit: f559965a016bcd362543e460e22f81f44b1a3d38 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 51 unique boards, 20 SoC families, 15 builds out of 185 Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab sunxi_defconfig: sun5i-r8-chip: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4_xplained: 1 offline lab multi_v7_defconfig: alpine-db: 1 offline lab am335x-boneblack: 1 offline lab at91-sama5d4_xplained: 1 offline lab exynos5800-peach-pi: 1 offline lab socfpga_cyclone5_de0_sockit: 1 offline lab sun5i-r8-chip: 1 offline lab tegra124-jetson-tk1: 1 offline lab arm64: defconfig: apq8016-sbc: 1 offline lab juno-r2: 1 offline lab meson-gxl-s905d-p230: 1 offline lab meson-gxl-s905x-p212: 1 offline lab mt7622-rfb1: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

1
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stable-rc/linux-4.19.y boot: 79 boots: 0 failed, 61 passed with 18 offline (v4.19.2-46-g714361ce825f)

by kernelci.org bot

stable-rc/linux-4.19.y boot: 79 boots: 0 failed, 61 passed with 18 offline (v4.19.2-46-g714361ce825f) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.19.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.19.y/kernel/v4.19.2-46-… Tree: stable-rc Branch: linux-4.19.y Git Describe: v4.19.2-46-g714361ce825f Git Commit: 714361ce825f62af06788161c3f7b25ff1bf303a Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 50 unique boards, 20 SoC families, 15 builds out of 186 Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab sunxi_defconfig: sun5i-r8-chip: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4_xplained: 1 offline lab multi_v7_defconfig: alpine-db: 1 offline lab am335x-boneblack: 1 offline lab at91-sama5d4_xplained: 1 offline lab exynos5800-peach-pi: 1 offline lab socfpga_cyclone5_de0_sockit: 1 offline lab sun5i-r8-chip: 1 offline lab tegra124-jetson-tk1: 1 offline lab arm64: defconfig: apq8016-sbc: 1 offline lab juno-r2: 1 offline lab meson-gxl-s905d-p230: 1 offline lab meson-gxl-s905x-p212: 1 offline lab mt7622-rfb1: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

1
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stable-rc/linux-4.9.y boot: 72 boots: 1 failed, 55 passed with 16 offline (v4.9.137-16-g51693551f918)

by kernelci.org bot

stable-rc/linux-4.9.y boot: 72 boots: 1 failed, 55 passed with 16 offline (v4.9.137-16-g51693551f918) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.9.y/kernel/v4.9.… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.9.y/kernel/v4.9.137-16-… Tree: stable-rc Branch: linux-4.9.y Git Describe: v4.9.137-16-g51693551f918 Git Commit: 51693551f918bd088ce760b9c33959a3a61db183 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 42 unique boards, 19 SoC families, 16 builds out of 182 Boot Regressions Detected: arm: qcom_defconfig: qcom-apq8064-cm-qs600: lab-baylibre-seattle: new failure (last pass: v4.9.137) Boot Failure Detected: arm: qcom_defconfig qcom-apq8064-cm-qs600: 1 failed lab Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab sunxi_defconfig: sun5i-r8-chip: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4_xplained: 1 offline lab multi_v7_defconfig: alpine-db: 1 offline lab am335x-boneblack: 1 offline lab at91-sama5d4_xplained: 1 offline lab exynos5800-peach-pi: 1 offline lab socfpga_cyclone5_de0_sockit: 1 offline lab sun5i-r8-chip: 1 offline lab tegra124-jetson-tk1: 1 offline lab socfpga_defconfig: socfpga_cyclone5_de0_sockit: 1 offline lab arm64: defconfig: apq8016-sbc: 1 offline lab juno-r2: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

1
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stable-rc/linux-3.18.y boot: 40 boots: 2 failed, 30 passed with 8 offline (v3.18.125-63-g90468834bfa7)

by kernelci.org bot

stable-rc/linux-3.18.y boot: 40 boots: 2 failed, 30 passed with 8 offline (v3.18.125-63-g90468834bfa7) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-3.18.y/kernel/v3.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-3.18.y/kernel/v3.18.125-6… Tree: stable-rc Branch: linux-3.18.y Git Describe: v3.18.125-63-g90468834bfa7 Git Commit: 90468834bfa76d1ba14ad2fd13e65fef3f3f3c77 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 22 unique boards, 12 SoC families, 14 builds out of 183 Boot Failures Detected: x86: x86_64_defconfig qemu: 1 failed lab x86-atom330: 1 failed lab Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4ek: 1 offline lab multi_v7_defconfig: am335x-boneblack: 1 offline lab exynos5800-peach-pi: 1 offline lab tegra124-jetson-tk1: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

1
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stable-rc/linux-4.18.y boot: 81 boots: 0 failed, 63 passed with 18 offline (v4.18.19-36-gd077d314f519)

by kernelci.org bot

stable-rc/linux-4.18.y boot: 81 boots: 0 failed, 63 passed with 18 offline (v4.18.19-36-gd077d314f519) Full Boot Summary: https://kernelci.org/boot/all/job/stable-rc/branch/linux-4.18.y/kernel/v4.1… Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.18.y/kernel/v4.18.19-36… Tree: stable-rc Branch: linux-4.18.y Git Describe: v4.18.19-36-gd077d314f519 Git Commit: d077d314f5196d4028c749da9c155f69a730ce54 Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git Tested: 51 unique boards, 20 SoC families, 15 builds out of 187 Offline Platforms: arm: omap2plus_defconfig: am335x-boneblack: 1 offline lab sunxi_defconfig: sun5i-r8-chip: 1 offline lab tegra_defconfig: tegra124-jetson-tk1: 1 offline lab bcm2835_defconfig: bcm2835-rpi-b: 1 offline lab exynos_defconfig: exynos5800-peach-pi: 1 offline lab sama5_defconfig: at91-sama5d4_xplained: 1 offline lab multi_v7_defconfig: alpine-db: 1 offline lab am335x-boneblack: 1 offline lab at91-sama5d4_xplained: 1 offline lab exynos5800-peach-pi: 1 offline lab socfpga_cyclone5_de0_sockit: 1 offline lab sun5i-r8-chip: 1 offline lab tegra124-jetson-tk1: 1 offline lab arm64: defconfig: apq8016-sbc: 1 offline lab juno-r2: 1 offline lab meson-gxl-s905d-p230: 1 offline lab meson-gxl-s905x-p212: 1 offline lab mt7622-rfb1: 1 offline lab --- For more info write to <info(a)kernelci.org>

6 years, 11 months

1
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[PATCH] drm/nouveau: Check rc from drm_dp_mst_topology_mgr_resume()

by Lyude Paul

We need to actually make sure we check this on resume since otherwise we won't know whether or not the topology is still there once we've resumed, which will cause us to still think the topology is connected even after it's been removed if the removal happens mid-suspend. Signed-off-by: Lyude Paul <lyude(a)redhat.com> Cc: stable(a)vger.kernel.org --- drivers/gpu/drm/nouveau/dispnv50/disp.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c b/drivers/gpu/drm/nouveau/dispnv50/disp.c index 6cbbae3f438b..6aa3521b6326 100644 --- a/drivers/gpu/drm/nouveau/dispnv50/disp.c +++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c @@ -1255,8 +1255,16 @@ nv50_mstm_fini(struct nv50_mstm *mstm) static void nv50_mstm_init(struct nv50_mstm *mstm) { - if (mstm && mstm->mgr.mst_state) - drm_dp_mst_topology_mgr_resume(&mstm->mgr); + int ret; + + if (!mstm || !mstm->mgr.mst_state) + return; + + ret = drm_dp_mst_topology_mgr_resume(&mstm->mgr); + if (ret == -1) { + drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false); + drm_kms_helper_hotplug_event(mstm->mgr.dev); + } } static void -- 2.19.1

6 years, 11 months

1
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