May 2025 - Linux-stable-mirror

FAILED: patch "[PATCH] drm/xe/gsc: do not flush the GSC worker from the reset path" failed to apply to 6.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.14-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.14.y git checkout FETCH_HEAD git cherry-pick -x 03552d8ac0afcc080c339faa0b726e2c0e9361cb # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051238-lurch-dollop-0b0f@gregkh' --subject-prefix 'PATCH 6.14.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 03552d8ac0afcc080c339faa0b726e2c0e9361cb Mon Sep 17 00:00:00 2001 From: Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> Date: Fri, 2 May 2025 08:51:04 -0700 Subject: [PATCH] drm/xe/gsc: do not flush the GSC worker from the reset path The workqueue used for the reset worker is marked as WQ_MEM_RECLAIM, while the GSC one isn't (and can't be as we need to do memory allocations in the gsc worker). Therefore, we can't flush the latter from the former. The reason why we had such a flush was to avoid interrupting either the GSC FW load or in progress GSC proxy operations. GSC proxy operations fall into 2 categories: 1) GSC proxy init: this only happens once immediately after GSC FW load and does not support being interrupted. The only way to recover from an interruption of the proxy init is to do an FLR and re-load the GSC. 2) GSC proxy request: this can happen in response to a request that the driver sends to the GSC. If this is interrupted, the GSC FW will timeout and the driver request will be failed, but overall the GSC will keep working fine. Flushing the work allowed us to avoid interruption in both cases (unless the hang came from the GSC engine itself, in which case we're toast anyway). However, a failure on a proxy request is tolerable if we're in a scenario where we're triggering a GT reset (i.e., something is already gone pretty wrong), so what we really need to avoid is interrupting the init flow, which we can do by polling on the register that reports when the proxy init is complete (as that ensure us that all the load and init operations have been completed). Note that during suspend we still want to do a flush of the worker to make sure it completes any operations involving the HW before the power is cut. v2: fix spelling in commit msg, rename waiter function (Julia) Fixes: dd0e89e5edc2 ("drm/xe/gsc: GSC FW load") Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/4830 Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> Cc: John Harrison <John.C.Harrison(a)Intel.com> Cc: Alan Previn <alan.previn.teres.alexis(a)intel.com> Cc: <stable(a)vger.kernel.org> # v6.8+ Reviewed-by: Julia Filipchuk <julia.filipchuk(a)intel.com> Link: https://lore.kernel.org/r/20250502155104.2201469-1-daniele.ceraolospurio@in… (cherry picked from commit 12370bfcc4f0bdf70279ec5b570eb298963422b5) Signed-off-by: Lucas De Marchi <lucas.demarchi(a)intel.com> diff --git a/drivers/gpu/drm/xe/xe_gsc.c b/drivers/gpu/drm/xe/xe_gsc.c index fd41113f8572..0bcf97063ff6 100644 --- a/drivers/gpu/drm/xe/xe_gsc.c +++ b/drivers/gpu/drm/xe/xe_gsc.c @@ -555,6 +555,28 @@ void xe_gsc_wait_for_worker_completion(struct xe_gsc *gsc) flush_work(&gsc->work); } +void xe_gsc_stop_prepare(struct xe_gsc *gsc) +{ + struct xe_gt *gt = gsc_to_gt(gsc); + int ret; + + if (!xe_uc_fw_is_loadable(&gsc->fw) || xe_uc_fw_is_in_error_state(&gsc->fw)) + return; + + xe_force_wake_assert_held(gt_to_fw(gt), XE_FW_GSC); + + /* + * If the GSC FW load or the proxy init are interrupted, the only way + * to recover it is to do an FLR and reload the GSC from scratch. + * Therefore, let's wait for the init to complete before stopping + * operations. The proxy init is the last step, so we can just wait on + * that + */ + ret = xe_gsc_wait_for_proxy_init_done(gsc); + if (ret) + xe_gt_err(gt, "failed to wait for GSC init completion before uc stop\n"); +} + /* * wa_14015076503: if the GSC FW is loaded, we need to alert it before doing a * GSC engine reset by writing a notification bit in the GS1 register and then diff --git a/drivers/gpu/drm/xe/xe_gsc.h b/drivers/gpu/drm/xe/xe_gsc.h index d99f66c38075..b8b8e0810ad9 100644 --- a/drivers/gpu/drm/xe/xe_gsc.h +++ b/drivers/gpu/drm/xe/xe_gsc.h @@ -16,6 +16,7 @@ struct xe_hw_engine; int xe_gsc_init(struct xe_gsc *gsc); int xe_gsc_init_post_hwconfig(struct xe_gsc *gsc); void xe_gsc_wait_for_worker_completion(struct xe_gsc *gsc); +void xe_gsc_stop_prepare(struct xe_gsc *gsc); void xe_gsc_load_start(struct xe_gsc *gsc); void xe_gsc_hwe_irq_handler(struct xe_hw_engine *hwe, u16 intr_vec); diff --git a/drivers/gpu/drm/xe/xe_gsc_proxy.c b/drivers/gpu/drm/xe/xe_gsc_proxy.c index 8cf70b228ff3..d0519cd6704a 100644 --- a/drivers/gpu/drm/xe/xe_gsc_proxy.c +++ b/drivers/gpu/drm/xe/xe_gsc_proxy.c @@ -71,6 +71,17 @@ bool xe_gsc_proxy_init_done(struct xe_gsc *gsc) HECI1_FWSTS1_PROXY_STATE_NORMAL; } +int xe_gsc_wait_for_proxy_init_done(struct xe_gsc *gsc) +{ + struct xe_gt *gt = gsc_to_gt(gsc); + + /* Proxy init can take up to 500ms, so wait double that for safety */ + return xe_mmio_wait32(&gt->mmio, HECI_FWSTS1(MTL_GSC_HECI1_BASE), + HECI1_FWSTS1_CURRENT_STATE, + HECI1_FWSTS1_PROXY_STATE_NORMAL, + USEC_PER_SEC, NULL, false); +} + static void __gsc_proxy_irq_rmw(struct xe_gsc *gsc, u32 clr, u32 set) { struct xe_gt *gt = gsc_to_gt(gsc); diff --git a/drivers/gpu/drm/xe/xe_gsc_proxy.h b/drivers/gpu/drm/xe/xe_gsc_proxy.h index fdef56995cd4..765602221dbc 100644 --- a/drivers/gpu/drm/xe/xe_gsc_proxy.h +++ b/drivers/gpu/drm/xe/xe_gsc_proxy.h @@ -12,6 +12,7 @@ struct xe_gsc; int xe_gsc_proxy_init(struct xe_gsc *gsc); bool xe_gsc_proxy_init_done(struct xe_gsc *gsc); +int xe_gsc_wait_for_proxy_init_done(struct xe_gsc *gsc); int xe_gsc_proxy_start(struct xe_gsc *gsc); int xe_gsc_proxy_request_handler(struct xe_gsc *gsc); diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c index 10a9e3c72b36..66198cf2662c 100644 --- a/drivers/gpu/drm/xe/xe_gt.c +++ b/drivers/gpu/drm/xe/xe_gt.c @@ -857,7 +857,7 @@ void xe_gt_suspend_prepare(struct xe_gt *gt) fw_ref = xe_force_wake_get(gt_to_fw(gt), XE_FORCEWAKE_ALL); - xe_uc_stop_prepare(&gt->uc); + xe_uc_suspend_prepare(&gt->uc); xe_force_wake_put(gt_to_fw(gt), fw_ref); } diff --git a/drivers/gpu/drm/xe/xe_uc.c b/drivers/gpu/drm/xe/xe_uc.c index c14bd2282044..3a8751a8b92d 100644 --- a/drivers/gpu/drm/xe/xe_uc.c +++ b/drivers/gpu/drm/xe/xe_uc.c @@ -244,7 +244,7 @@ void xe_uc_gucrc_disable(struct xe_uc *uc) void xe_uc_stop_prepare(struct xe_uc *uc) { - xe_gsc_wait_for_worker_completion(&uc->gsc); + xe_gsc_stop_prepare(&uc->gsc); xe_guc_stop_prepare(&uc->guc); } @@ -278,6 +278,12 @@ static void uc_reset_wait(struct xe_uc *uc) goto again; } +void xe_uc_suspend_prepare(struct xe_uc *uc) +{ + xe_gsc_wait_for_worker_completion(&uc->gsc); + xe_guc_stop_prepare(&uc->guc); +} + int xe_uc_suspend(struct xe_uc *uc) { /* GuC submission not enabled, nothing to do */ diff --git a/drivers/gpu/drm/xe/xe_uc.h b/drivers/gpu/drm/xe/xe_uc.h index 3813c1ede450..c23e6f5e2514 100644 --- a/drivers/gpu/drm/xe/xe_uc.h +++ b/drivers/gpu/drm/xe/xe_uc.h @@ -18,6 +18,7 @@ int xe_uc_reset_prepare(struct xe_uc *uc); void xe_uc_stop_prepare(struct xe_uc *uc); void xe_uc_stop(struct xe_uc *uc); int xe_uc_start(struct xe_uc *uc); +void xe_uc_suspend_prepare(struct xe_uc *uc); int xe_uc_suspend(struct xe_uc *uc); int xe_uc_sanitize_reset(struct xe_uc *uc); void xe_uc_declare_wedged(struct xe_uc *uc);

7 months

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[PATCH v2] binder: fix use-after-free in binderfs_evict_inode()

by Carlos Llamas

From: Dmitry Antipov <dmantipov(a)yandex.ru> Running 'stress-ng --binderfs 16 --timeout 300' under KASAN-enabled kernel, I've noticed the following: BUG: KASAN: slab-use-after-free in binderfs_evict_inode+0x1de/0x2d0 Write of size 8 at addr ffff88807379bc08 by task stress-ng-binde/1699 CPU: 0 UID: 0 PID: 1699 Comm: stress-ng-binde Not tainted 6.14.0-rc7-g586de92313fc-dirty #13 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x1c2/0x2a0 ? __pfx_dump_stack_lvl+0x10/0x10 ? __pfx__printk+0x10/0x10 ? __pfx_lock_release+0x10/0x10 ? __virt_addr_valid+0x18c/0x540 ? __virt_addr_valid+0x469/0x540 print_report+0x155/0x840 ? __virt_addr_valid+0x18c/0x540 ? __virt_addr_valid+0x469/0x540 ? __phys_addr+0xba/0x170 ? binderfs_evict_inode+0x1de/0x2d0 kasan_report+0x147/0x180 ? binderfs_evict_inode+0x1de/0x2d0 binderfs_evict_inode+0x1de/0x2d0 ? __pfx_binderfs_evict_inode+0x10/0x10 evict+0x524/0x9f0 ? __pfx_lock_release+0x10/0x10 ? __pfx_evict+0x10/0x10 ? do_raw_spin_unlock+0x4d/0x210 ? _raw_spin_unlock+0x28/0x50 ? iput+0x697/0x9b0 __dentry_kill+0x209/0x660 ? shrink_kill+0x8d/0x2c0 shrink_kill+0xa9/0x2c0 shrink_dentry_list+0x2e0/0x5e0 shrink_dcache_parent+0xa2/0x2c0 ? __pfx_shrink_dcache_parent+0x10/0x10 ? __pfx_lock_release+0x10/0x10 ? __pfx_do_raw_spin_lock+0x10/0x10 do_one_tree+0x23/0xe0 shrink_dcache_for_umount+0xa0/0x170 generic_shutdown_super+0x67/0x390 kill_litter_super+0x76/0xb0 binderfs_kill_super+0x44/0x90 deactivate_locked_super+0xb9/0x130 cleanup_mnt+0x422/0x4c0 ? lockdep_hardirqs_on+0x9d/0x150 task_work_run+0x1d2/0x260 ? __pfx_task_work_run+0x10/0x10 resume_user_mode_work+0x52/0x60 syscall_exit_to_user_mode+0x9a/0x120 do_syscall_64+0x103/0x210 ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0xcac57b Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 RSP: 002b:00007ffecf4226a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007ffecf422720 RCX: 0000000000cac57b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffecf422850 RBP: 00007ffecf422850 R08: 0000000028d06ab1 R09: 7fffffffffffffff R10: 3fffffffffffffff R11: 0000000000000246 R12: 00007ffecf422718 R13: 00007ffecf422710 R14: 00007f478f87b658 R15: 00007ffecf422830 </TASK> Allocated by task 1705: kasan_save_track+0x3e/0x80 __kasan_kmalloc+0x8f/0xa0 __kmalloc_cache_noprof+0x213/0x3e0 binderfs_binder_device_create+0x183/0xa80 binder_ctl_ioctl+0x138/0x190 __x64_sys_ioctl+0x120/0x1b0 do_syscall_64+0xf6/0x210 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 1705: kasan_save_track+0x3e/0x80 kasan_save_free_info+0x46/0x50 __kasan_slab_free+0x62/0x70 kfree+0x194/0x440 evict+0x524/0x9f0 do_unlinkat+0x390/0x5b0 __x64_sys_unlink+0x47/0x50 do_syscall_64+0xf6/0x210 entry_SYSCALL_64_after_hwframe+0x77/0x7f This 'stress-ng' workload causes the concurrent deletions from 'binder_devices' and so requires full-featured synchronization to prevent list corruption. I've found this issue independently but pretty sure that syzbot did the same, so Reported-by: and Closes: should be applicable here as well. Cc: stable(a)vger.kernel.org Reported-by: syzbot+353d7b75658a95aa955a(a)syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=353d7b75658a95aa955a Fixes: e77aff5528a18 ("binderfs: fix use-after-free in binder_devices") Signed-off-by: Dmitry Antipov <dmantipov(a)yandex.ru> Acked-by: Carlos Llamas <cmllamas(a)google.com> Signed-off-by: Carlos Llamas <cmllamas(a)google.com> --- v1: https://lore.kernel.org/all/20250324132427.922495-1-dmantipov@yandex.ru/ v2: - Collect tags. Actually Cc Greg and stable@ this time. drivers/android/binder.c | 15 +++++++++++++-- drivers/android/binder_internal.h | 8 ++++++-- drivers/android/binderfs.c | 2 +- 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 5fc2c8ee61b1..8d9c5f436fca 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -79,6 +79,8 @@ static HLIST_HEAD(binder_deferred_list); static DEFINE_MUTEX(binder_deferred_lock); static HLIST_HEAD(binder_devices); +static DEFINE_SPINLOCK(binder_devices_lock); + static HLIST_HEAD(binder_procs); static DEFINE_MUTEX(binder_procs_lock); @@ -6929,7 +6931,16 @@ const struct binder_debugfs_entry binder_debugfs_entries[] = { void binder_add_device(struct binder_device *device) { + spin_lock(&binder_devices_lock); hlist_add_head(&device->hlist, &binder_devices); + spin_unlock(&binder_devices_lock); +} + +void binder_remove_device(struct binder_device *device) +{ + spin_lock(&binder_devices_lock); + hlist_del_init(&device->hlist); + spin_unlock(&binder_devices_lock); } static int __init init_binder_device(const char *name) @@ -6956,7 +6967,7 @@ static int __init init_binder_device(const char *name) return ret; } - hlist_add_head(&binder_device->hlist, &binder_devices); + binder_add_device(binder_device); return ret; } @@ -7018,7 +7029,7 @@ static int __init binder_init(void) err_init_binder_device_failed: hlist_for_each_entry_safe(device, tmp, &binder_devices, hlist) { misc_deregister(&device->miscdev); - hlist_del(&device->hlist); + binder_remove_device(device); kfree(device); } diff --git a/drivers/android/binder_internal.h b/drivers/android/binder_internal.h index 6a66c9769c6c..1ba5caf1d88d 100644 --- a/drivers/android/binder_internal.h +++ b/drivers/android/binder_internal.h @@ -583,9 +583,13 @@ struct binder_object { /** * Add a binder device to binder_devices * @device: the new binder device to add to the global list - * - * Not reentrant as the list is not protected by any locks */ void binder_add_device(struct binder_device *device); +/** + * Remove a binder device to binder_devices + * @device: the binder device to remove from the global list + */ +void binder_remove_device(struct binder_device *device); + #endif /* _LINUX_BINDER_INTERNAL_H */ diff --git a/drivers/android/binderfs.c b/drivers/android/binderfs.c index 94c6446604fc..44d430c4ebef 100644 --- a/drivers/android/binderfs.c +++ b/drivers/android/binderfs.c @@ -274,7 +274,7 @@ static void binderfs_evict_inode(struct inode *inode) mutex_unlock(&binderfs_minors_mutex); if (refcount_dec_and_test(&device->ref)) { - hlist_del_init(&device->hlist); + binder_remove_device(device); kfree(device->context.name); kfree(device); } -- 2.49.0.1101.gccaa498523-goog

7 months

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FAILED: patch "[PATCH] drm/tiny: panel-mipi-dbi: Use drm_client_setup_with_fourcc()" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 9c1798259b9420f38f1fa1b83e3d864c3eb1a83e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051936-qualify-waged-4677@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 9c1798259b9420f38f1fa1b83e3d864c3eb1a83e Mon Sep 17 00:00:00 2001 From: Fabio Estevam <festevam(a)denx.de> Date: Thu, 17 Apr 2025 07:34:58 -0300 Subject: [PATCH] drm/tiny: panel-mipi-dbi: Use drm_client_setup_with_fourcc() Since commit 559358282e5b ("drm/fb-helper: Don't use the preferred depth for the BPP default"), RGB565 displays such as the CFAF240320X no longer render correctly: colors are distorted and the content is shown twice horizontally. This regression is due to the fbdev emulation layer defaulting to 32 bits per pixel, whereas the display expects 16 bpp (RGB565). As a result, the framebuffer data is incorrectly interpreted by the panel. Fix the issue by calling drm_client_setup_with_fourcc() with a format explicitly selected based on the display's bits-per-pixel value. For 16 bpp, use DRM_FORMAT_RGB565; for other values, fall back to the previous behavior. This ensures that the allocated framebuffer format matches the hardware expectations, avoiding color and layout corruption. Tested on a CFAF240320X display with an RGB565 configuration, confirming correct colors and layout after applying this patch. Cc: stable(a)vger.kernel.org Fixes: 559358282e5b ("drm/fb-helper: Don't use the preferred depth for the BPP default") Signed-off-by: Fabio Estevam <festevam(a)denx.de> Reviewed-by: Thomas Zimmermann <tzimmermann(a)suse.de> Reviewed-by: Javier Martinez Canillas <javierm(a)redhat.com> Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://lore.kernel.org/r/20250417103458.2496790-1-festevam@gmail.com diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c index 0460ecaef4bd..23914a9f7fd3 100644 --- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c +++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c @@ -390,7 +390,10 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi) spi_set_drvdata(spi, drm); - drm_client_setup(drm, NULL); + if (bpp == 16) + drm_client_setup_with_fourcc(drm, DRM_FORMAT_RGB565); + else + drm_client_setup_with_fourcc(drm, DRM_FORMAT_RGB888); return 0; }

7 months

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FAILED: patch "[PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 54c4c58713aaff76c2422ff5750e557ab3b100d7 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051925-parasail-grinch-05f6@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 54c4c58713aaff76c2422ff5750e557ab3b100d7 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Date: Wed, 7 May 2025 15:50:28 +0300 Subject: [PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on unbind/bind It has been observed on the Renesas RZ/G3S SoC that unbinding and binding the PHY driver leads to role autodetection failures. This issue occurs when PHY 3 is the first initialized PHY. PHY 3 does not have an interrupt associated with the USB2_INT_ENABLE register (as rcar_gen3_int_enable[3] = 0). As a result, rcar_gen3_init_otg() is called to initialize OTG without enabling PHY interrupts. To resolve this, add rcar_gen3_is_any_otg_rphy_initialized() and call it in role_store(), role_show(), and rcar_gen3_init_otg(). At the same time, rcar_gen3_init_otg() is only called when initialization for a PHY with interrupt bits is in progress. As a result, the struct rcar_gen3_phy::otg_initialized is no longer needed. Fixes: 549b6b55b005 ("phy: renesas: rcar-gen3-usb2: enable/disable independent irqs") Cc: stable(a)vger.kernel.org Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj(a)bp.renesas.com> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Link: https://lore.kernel.org/r/20250507125032.565017-2-claudiu.beznea.uj@bp.rene… Signed-off-by: Vinod Koul <vkoul(a)kernel.org> diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 775f4f973a6c..46afba2fe0dc 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -107,7 +107,6 @@ struct rcar_gen3_phy { struct rcar_gen3_chan *ch; u32 int_enable_bits; bool initialized; - bool otg_initialized; bool powered; }; @@ -320,16 +319,15 @@ static bool rcar_gen3_is_any_rphy_initialized(struct rcar_gen3_chan *ch) return false; } -static bool rcar_gen3_needs_init_otg(struct rcar_gen3_chan *ch) +static bool rcar_gen3_is_any_otg_rphy_initialized(struct rcar_gen3_chan *ch) { - int i; - - for (i = 0; i < NUM_OF_PHYS; i++) { - if (ch->rphys[i].otg_initialized) - return false; + for (enum rcar_gen3_phy_index i = PHY_INDEX_BOTH_HC; i <= PHY_INDEX_EHCI; + i++) { + if (ch->rphys[i].initialized) + return true; } - return true; + return false; } static bool rcar_gen3_are_all_rphys_power_off(struct rcar_gen3_chan *ch) @@ -351,7 +349,7 @@ static ssize_t role_store(struct device *dev, struct device_attribute *attr, bool is_b_device; enum phy_mode cur_mode, new_mode; - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; if (sysfs_streq(buf, "host")) @@ -389,7 +387,7 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr, { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; return sprintf(buf, "%s\n", rcar_gen3_is_host(ch) ? "host" : @@ -402,6 +400,9 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) void __iomem *usb2_base = ch->base; u32 val; + if (!ch->is_otg_channel || rcar_gen3_is_any_otg_rphy_initialized(ch)) + return; + /* Should not use functions of read-modify-write a register */ val = readl(usb2_base + USB2_LINECTRL1); val = (val & ~USB2_LINECTRL1_DP_RPD) | USB2_LINECTRL1_DPRPD_EN | @@ -465,12 +466,9 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) writel(USB2_SPD_RSM_TIMSET_INIT, usb2_base + USB2_SPD_RSM_TIMSET); writel(USB2_OC_TIMSET_INIT, usb2_base + USB2_OC_TIMSET); - /* Initialize otg part */ - if (channel->is_otg_channel) { - if (rcar_gen3_needs_init_otg(channel)) - rcar_gen3_init_otg(channel); - rphy->otg_initialized = true; - } + /* Initialize otg part (only if we initialize a PHY with IRQs). */ + if (rphy->int_enable_bits) + rcar_gen3_init_otg(channel); rphy->initialized = true; @@ -486,9 +484,6 @@ static int rcar_gen3_phy_usb2_exit(struct phy *p) rphy->initialized = false; - if (channel->is_otg_channel) - rphy->otg_initialized = false; - val = readl(usb2_base + USB2_INT_ENABLE); val &= ~rphy->int_enable_bits; if (!rcar_gen3_is_any_rphy_initialized(channel))

7 months

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FAILED: patch "[PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 54c4c58713aaff76c2422ff5750e557ab3b100d7 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051924-sulfite-ahoy-71d8@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 54c4c58713aaff76c2422ff5750e557ab3b100d7 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Date: Wed, 7 May 2025 15:50:28 +0300 Subject: [PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on unbind/bind It has been observed on the Renesas RZ/G3S SoC that unbinding and binding the PHY driver leads to role autodetection failures. This issue occurs when PHY 3 is the first initialized PHY. PHY 3 does not have an interrupt associated with the USB2_INT_ENABLE register (as rcar_gen3_int_enable[3] = 0). As a result, rcar_gen3_init_otg() is called to initialize OTG without enabling PHY interrupts. To resolve this, add rcar_gen3_is_any_otg_rphy_initialized() and call it in role_store(), role_show(), and rcar_gen3_init_otg(). At the same time, rcar_gen3_init_otg() is only called when initialization for a PHY with interrupt bits is in progress. As a result, the struct rcar_gen3_phy::otg_initialized is no longer needed. Fixes: 549b6b55b005 ("phy: renesas: rcar-gen3-usb2: enable/disable independent irqs") Cc: stable(a)vger.kernel.org Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj(a)bp.renesas.com> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Link: https://lore.kernel.org/r/20250507125032.565017-2-claudiu.beznea.uj@bp.rene… Signed-off-by: Vinod Koul <vkoul(a)kernel.org> diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 775f4f973a6c..46afba2fe0dc 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -107,7 +107,6 @@ struct rcar_gen3_phy { struct rcar_gen3_chan *ch; u32 int_enable_bits; bool initialized; - bool otg_initialized; bool powered; }; @@ -320,16 +319,15 @@ static bool rcar_gen3_is_any_rphy_initialized(struct rcar_gen3_chan *ch) return false; } -static bool rcar_gen3_needs_init_otg(struct rcar_gen3_chan *ch) +static bool rcar_gen3_is_any_otg_rphy_initialized(struct rcar_gen3_chan *ch) { - int i; - - for (i = 0; i < NUM_OF_PHYS; i++) { - if (ch->rphys[i].otg_initialized) - return false; + for (enum rcar_gen3_phy_index i = PHY_INDEX_BOTH_HC; i <= PHY_INDEX_EHCI; + i++) { + if (ch->rphys[i].initialized) + return true; } - return true; + return false; } static bool rcar_gen3_are_all_rphys_power_off(struct rcar_gen3_chan *ch) @@ -351,7 +349,7 @@ static ssize_t role_store(struct device *dev, struct device_attribute *attr, bool is_b_device; enum phy_mode cur_mode, new_mode; - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; if (sysfs_streq(buf, "host")) @@ -389,7 +387,7 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr, { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; return sprintf(buf, "%s\n", rcar_gen3_is_host(ch) ? "host" : @@ -402,6 +400,9 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) void __iomem *usb2_base = ch->base; u32 val; + if (!ch->is_otg_channel || rcar_gen3_is_any_otg_rphy_initialized(ch)) + return; + /* Should not use functions of read-modify-write a register */ val = readl(usb2_base + USB2_LINECTRL1); val = (val & ~USB2_LINECTRL1_DP_RPD) | USB2_LINECTRL1_DPRPD_EN | @@ -465,12 +466,9 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) writel(USB2_SPD_RSM_TIMSET_INIT, usb2_base + USB2_SPD_RSM_TIMSET); writel(USB2_OC_TIMSET_INIT, usb2_base + USB2_OC_TIMSET); - /* Initialize otg part */ - if (channel->is_otg_channel) { - if (rcar_gen3_needs_init_otg(channel)) - rcar_gen3_init_otg(channel); - rphy->otg_initialized = true; - } + /* Initialize otg part (only if we initialize a PHY with IRQs). */ + if (rphy->int_enable_bits) + rcar_gen3_init_otg(channel); rphy->initialized = true; @@ -486,9 +484,6 @@ static int rcar_gen3_phy_usb2_exit(struct phy *p) rphy->initialized = false; - if (channel->is_otg_channel) - rphy->otg_initialized = false; - val = readl(usb2_base + USB2_INT_ENABLE); val &= ~rphy->int_enable_bits; if (!rcar_gen3_is_any_rphy_initialized(channel))

7 months

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FAILED: patch "[PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-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>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 54c4c58713aaff76c2422ff5750e557ab3b100d7 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051923-veto-uncivil-bb49@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 54c4c58713aaff76c2422ff5750e557ab3b100d7 Mon Sep 17 00:00:00 2001 From: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Date: Wed, 7 May 2025 15:50:28 +0300 Subject: [PATCH] phy: renesas: rcar-gen3-usb2: Fix role detection on unbind/bind It has been observed on the Renesas RZ/G3S SoC that unbinding and binding the PHY driver leads to role autodetection failures. This issue occurs when PHY 3 is the first initialized PHY. PHY 3 does not have an interrupt associated with the USB2_INT_ENABLE register (as rcar_gen3_int_enable[3] = 0). As a result, rcar_gen3_init_otg() is called to initialize OTG without enabling PHY interrupts. To resolve this, add rcar_gen3_is_any_otg_rphy_initialized() and call it in role_store(), role_show(), and rcar_gen3_init_otg(). At the same time, rcar_gen3_init_otg() is only called when initialization for a PHY with interrupt bits is in progress. As a result, the struct rcar_gen3_phy::otg_initialized is no longer needed. Fixes: 549b6b55b005 ("phy: renesas: rcar-gen3-usb2: enable/disable independent irqs") Cc: stable(a)vger.kernel.org Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj(a)bp.renesas.com> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> Link: https://lore.kernel.org/r/20250507125032.565017-2-claudiu.beznea.uj@bp.rene… Signed-off-by: Vinod Koul <vkoul(a)kernel.org> diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 775f4f973a6c..46afba2fe0dc 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -107,7 +107,6 @@ struct rcar_gen3_phy { struct rcar_gen3_chan *ch; u32 int_enable_bits; bool initialized; - bool otg_initialized; bool powered; }; @@ -320,16 +319,15 @@ static bool rcar_gen3_is_any_rphy_initialized(struct rcar_gen3_chan *ch) return false; } -static bool rcar_gen3_needs_init_otg(struct rcar_gen3_chan *ch) +static bool rcar_gen3_is_any_otg_rphy_initialized(struct rcar_gen3_chan *ch) { - int i; - - for (i = 0; i < NUM_OF_PHYS; i++) { - if (ch->rphys[i].otg_initialized) - return false; + for (enum rcar_gen3_phy_index i = PHY_INDEX_BOTH_HC; i <= PHY_INDEX_EHCI; + i++) { + if (ch->rphys[i].initialized) + return true; } - return true; + return false; } static bool rcar_gen3_are_all_rphys_power_off(struct rcar_gen3_chan *ch) @@ -351,7 +349,7 @@ static ssize_t role_store(struct device *dev, struct device_attribute *attr, bool is_b_device; enum phy_mode cur_mode, new_mode; - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; if (sysfs_streq(buf, "host")) @@ -389,7 +387,7 @@ static ssize_t role_show(struct device *dev, struct device_attribute *attr, { struct rcar_gen3_chan *ch = dev_get_drvdata(dev); - if (!ch->is_otg_channel || !rcar_gen3_is_any_rphy_initialized(ch)) + if (!ch->is_otg_channel || !rcar_gen3_is_any_otg_rphy_initialized(ch)) return -EIO; return sprintf(buf, "%s\n", rcar_gen3_is_host(ch) ? "host" : @@ -402,6 +400,9 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) void __iomem *usb2_base = ch->base; u32 val; + if (!ch->is_otg_channel || rcar_gen3_is_any_otg_rphy_initialized(ch)) + return; + /* Should not use functions of read-modify-write a register */ val = readl(usb2_base + USB2_LINECTRL1); val = (val & ~USB2_LINECTRL1_DP_RPD) | USB2_LINECTRL1_DPRPD_EN | @@ -465,12 +466,9 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) writel(USB2_SPD_RSM_TIMSET_INIT, usb2_base + USB2_SPD_RSM_TIMSET); writel(USB2_OC_TIMSET_INIT, usb2_base + USB2_OC_TIMSET); - /* Initialize otg part */ - if (channel->is_otg_channel) { - if (rcar_gen3_needs_init_otg(channel)) - rcar_gen3_init_otg(channel); - rphy->otg_initialized = true; - } + /* Initialize otg part (only if we initialize a PHY with IRQs). */ + if (rphy->int_enable_bits) + rcar_gen3_init_otg(channel); rphy->initialized = true; @@ -486,9 +484,6 @@ static int rcar_gen3_phy_usb2_exit(struct phy *p) rphy->initialized = false; - if (channel->is_otg_channel) - rphy->otg_initialized = false; - val = readl(usb2_base + USB2_INT_ENABLE); val &= ~rphy->int_enable_bits; if (!rcar_gen3_is_any_rphy_initialized(channel))

7 months

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[PATCH] net: hns3: Add error handling for VLAN filter hardware configuration

by Wentao Liang

The hclge_rm_vport_vlan_table() calls hclge_set_vlan_filter_hw() but does not check the return value. This could lead to execution with potentially invalid data. A proper implementation can be found in hclge_add_vport_all_vlan_table(). Add error handling after calling hclge_set_vlan_filter_hw(). If hclge_set_vlan_filter_hw() fails, log an error message via dev_err() and return. Fixes: c6075b193462 ("net: hns3: Record VF vlan tables") Cc: stable(a)vger.kernel.org # v5.1 Signed-off-by: Wentao Liang <vulab(a)iscas.ac.cn> --- .../hisilicon/hns3/hns3pf/hclge_main.c | 20 +++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c index db7845009252..5ab4c7f63766 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c @@ -10141,15 +10141,23 @@ static void hclge_rm_vport_vlan_table(struct hclge_vport *vport, u16 vlan_id, { struct hclge_vport_vlan_cfg *vlan, *tmp; struct hclge_dev *hdev = vport->back; + int ret; list_for_each_entry_safe(vlan, tmp, &vport->vlan_list, node) { if (vlan->vlan_id == vlan_id) { - if (is_write_tbl && vlan->hd_tbl_status) - hclge_set_vlan_filter_hw(hdev, - htons(ETH_P_8021Q), - vport->vport_id, - vlan_id, - true); + if (is_write_tbl && vlan->hd_tbl_status) { + ret = hclge_set_vlan_filter_hw(hdev, + htons(ETH_P_8021Q), + vport->vport_id, + vlan_id, + true); + if (ret) { + dev_err(&hdev->pdev->dev, + "restore vport vlan list failed, ret=%d\n", + ret); + return; + } + } list_del(&vlan->node); kfree(vlan); -- 2.42.0.windows.2

7 months

2
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regression in 6.6.91: arch/x86/kernel/alternative.c:1452:5: error: redefinition of 'its_static_thunk'

by Natanael Copa

Hi! When building 6.6.91 for Alpine Linux I got this error on 32 bit x86: CC net/devlink/dpipe.o /home/buildozer/aports/main/linux-lts/src/linux-6.6/arch/x86/kernel/alternative.c:1452:5: error: redefinition of 'its_static_thunk' 1452 | u8 *its_static_thunk(int reg) | ^~~~~~~~~~~~~~~~ In file included from /home/buildozer/aports/main/linux-lts/src/linux-6.6/arch/x86/include/asm/barrier.h:5, from /home/buildozer/aports/main/linux-lts/src/linux-6.6/include/linux/list.h:11, from /home/buildozer/aports/main/linux-lts/src/linux-6.6/include/linux/module.h:12, from /home/buildozer/aports/main/linux-lts/src/linux-6.6/arch/x86/kernel/alternative.c:4: /home/buildozer/aports/main/linux-lts/src/linux-6.6/arch/x86/include/asm/alternative.h:143:19: note: previous definition of 'its_static_thunk' with type 'u8 *(int)' {aka 'unsigned char *(int)'} 143 | static inline u8 *its_static_thunk(int reg) | ^~~~~~~~~~~~~~~~ CC [M] net/sched/act_skbmod.o make[4]: *** [/home/buildozer/aports/main/linux-lts/src/linux-6.6/scripts/Makefile.build:243: arch/x86/kernel/alternative.o] Error 1 make[3]: *** [/home/buildozer/aports/main/linux-lts/src/linux-6.6/scripts/Makefile.build:480: arch/x86/kernel] Error 2 make[3]: *** Waiting for unfinished jobs.... I believe this was introduce with commit 772934d9062a0f7297ad4e5bffbd904208655660 Author: Peter Zijlstra <peterz(a)infradead.org> Date: Wed Apr 23 09:57:31 2025 +0200 x86/its: FineIBT-paranoid vs ITS commit e52c1dc7455d32c8a55f9949d300e5e87d011fa6 upstream.

7 months

2
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[PATCH] perf/arm-cmn: Add CMN S3 ACPI binding

by Robin Murphy

An ACPI binding for CMN S3 was not yet finalised when the driver support was originally written, but v1.2 of DEN0093 "ACPI for Arm Components" has at last been published; support ACPI systems using the proper HID. Cc: stable(a)vger.kernel.org Fixes: 0dc2f4963f7e ("perf/arm-cmn: Support CMN S3") Signed-off-by: Robin Murphy <robin.murphy(a)arm.com> --- drivers/perf/arm-cmn.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index e385f187a084..403850b1040d 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -2651,6 +2651,7 @@ static const struct acpi_device_id arm_cmn_acpi_match[] = { { "ARMHC600", PART_CMN600 }, { "ARMHC650" }, { "ARMHC700" }, + { "ARMHC003" }, {} }; MODULE_DEVICE_TABLE(acpi, arm_cmn_acpi_match); -- 2.39.2.101.g768bb238c484.dirty

7 months

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[PATCH net] phy: dp83869: fix interrupts issue when using with an optical fiber sfp. to correctly clear the interrupts both status registers must be read.

by chalianis1＠gmail.com

From: Anis Chali <chalianis1(a)gmail.com> from datasheet of dp83869hm 7.3.6 Interrupt The DP83869HM can be configured to generate an interrupt when changes of internal status occur. The interrupt allows a MAC to act upon the status in the PHY without polling the PHY registers. The interrupt source can be selected through the interrupt registers, MICR (12h) and FIBER_INT_EN (C18h). The interrupt status can be read from ISR (13h) and FIBER_INT_STTS (C19h) registers. Some interrupts are enabled by default and can be disabled through register access. Both the interrupt status registers must be read in order to clear pending interrupts. Until the pending interrupts are cleared, new interrupts may not be routed to the interrupt pin. Fixes: interrupts issue when using with an optical fiber sfp. Signed-off-by: Anis Chali <chalianis1(a)gmail.com> --- drivers/net/phy/dp83869.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/phy/dp83869.c b/drivers/net/phy/dp83869.c index a62cd838a9ea..1e8c20f387b8 100644 --- a/drivers/net/phy/dp83869.c +++ b/drivers/net/phy/dp83869.c @@ -41,6 +41,7 @@ #define DP83869_IO_MUX_CFG 0x0170 #define DP83869_OP_MODE 0x01df #define DP83869_FX_CTRL 0x0c00 +#define DP83869_FX_INT_STS 0x0c19 #define DP83869_SW_RESET BIT(15) #define DP83869_SW_RESTART BIT(14) @@ -195,6 +196,12 @@ static int dp83869_ack_interrupt(struct phy_device *phydev) if (err < 0) return err; + if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) { + err = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_FX_INT_STS); + if (err < 0) + return err; + } + return 0; } -- 2.49.0

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