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[PATCH] media: stm32: dcmipp: avoid naming clock if only one is needed

by Alain Volmat

When DCMIPP requires only a single clock (kclk), avoid relying on its name to obtain it. The introduction of MP25 support added the mclk, which necessitated naming the first clock kclk. However, this breaks backward compatibility with existing MP13 device trees that do not specify clock names. Fixes: 686f27f7ea37 ("media: stm32: dcmipp: add core support for the stm32mp25") Signed-off-by: Alain Volmat <alain.volmat(a)foss.st.com> Cc: Stable(a)vger.kernel.org # 6.14.x: 7f487562af49 media: stm32: dcmipp: correct ret type in dcmipp_graph_notify_bound Cc: Stable(a)vger.kernel.org # 6.14.x: c715dd62da30 media: stm32: dcmipp: add has_csi2 & needs_mclk in match data Cc: Stable(a)vger.kernel.org # 6.14.x: --- drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c index 1b7bae3266c8..49398d077764 100644 --- a/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c +++ b/drivers/media/platform/st/stm32/stm32-dcmipp/dcmipp-core.c @@ -526,7 +526,12 @@ static int dcmipp_probe(struct platform_device *pdev) return ret; } - kclk = devm_clk_get(&pdev->dev, "kclk"); + /* + * In case of the DCMIPP has only 1 clock (such as on MP13), the + * clock might not be named. + */ + kclk = devm_clk_get(&pdev->dev, + dcmipp->pipe_cfg->needs_mclk ? "kclk" : NULL); if (IS_ERR(kclk)) return dev_err_probe(&pdev->dev, PTR_ERR(kclk), "Unable to get kclk\n"); --- base-commit: f7231cff1f3ff8259bef02dc4999bc132abf29cf change-id: 20251215-stm32-dcmipp-mp13-kclk-fix-b36b1bf22be1 Best regards, -- Alain Volmat <alain.volmat(a)foss.st.com>

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[PATCH] NFC: Fix error handling in nfc_genl_dump_targets

by Ma Ke

nfc_genl_dump_targets() increments the device reference count via nfc_get_device() but fails to decrement it properly. nfc_get_device() calls class_find_device() which internally calls get_device() to increment the reference count. No corresponding put_device() is made to decrement the reference count. Add proper reference count decrementing using nfc_put_device() when the dump operation completes or encounters an error, ensuring balanced reference counting. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 4d12b8b129f1 ("NFC: add nfc generic netlink interface") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- net/nfc/netlink.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c index a18e2c503da6..9ae138ee91dd 100644 --- a/net/nfc/netlink.c +++ b/net/nfc/netlink.c @@ -159,6 +159,11 @@ static int nfc_genl_dump_targets(struct sk_buff *skb, cb->args[0] = i; + if (rc < 0 || i >= dev->n_targets) { + nfc_put_device(dev); + cb->args[1] = 0; + } + return skb->len; } -- 2.17.1

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[char-misc] mei: me: add nova lake point S DID

by Alexander Usyskin

Add Nova Lake S device id. Cc: stable(a)vger.kernel.org Co-developed-by: Tomas Winkler <tomasw(a)gmail.com> Signed-off-by: Tomas Winkler <tomasw(a)gmail.com> Signed-off-by: Alexander Usyskin <alexander.usyskin(a)intel.com> --- drivers/misc/mei/hw-me-regs.h | 2 ++ drivers/misc/mei/pci-me.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/misc/mei/hw-me-regs.h b/drivers/misc/mei/hw-me-regs.h index a4f75dc36929..fa30899a5fa2 100644 --- a/drivers/misc/mei/hw-me-regs.h +++ b/drivers/misc/mei/hw-me-regs.h @@ -122,6 +122,8 @@ #define MEI_DEV_ID_WCL_P 0x4D70 /* Wildcat Lake P */ +#define MEI_DEV_ID_NVL_S 0x6E68 /* Nova Lake Point S */ + /* * MEI HW Section */ diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index 73cad914be9f..2a6e569558b9 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -129,6 +129,8 @@ static const struct pci_device_id mei_me_pci_tbl[] = { {MEI_PCI_DEVICE(MEI_DEV_ID_WCL_P, MEI_ME_PCH15_CFG)}, + {MEI_PCI_DEVICE(MEI_DEV_ID_NVL_S, MEI_ME_PCH15_CFG)}, + /* required last entry */ {0, } }; -- 2.43.0

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[PATCH] tcpm: allow looking for role_sw device in the main node

by Arnaud Ferraris

When ports are defined in the tcpc main node, fwnode_usb_role_switch_get returns an error, meaning usb_role_switch_get (which would succeed) never gets a chance to run as port->role_sw isn't NULL, causing a regression on devices where this is the case. Fix this by turning the NULL check into IS_ERR_OR_NULL, so usb_role_switch_get can actually run and the device get properly probed. Fixes: 2d8713f807a4 ("tcpm: switch check for role_sw device with fw_node") Cc: stable(a)vger.kernel.org Signed-off-by: Arnaud Ferraris <arnaud.ferraris(a)collabora.com> --- drivers/usb/typec/tcpm/tcpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index cc78770509dbc..37698204d48d2 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -7877,7 +7877,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->partner_desc.identity = &port->partner_ident; port->role_sw = fwnode_usb_role_switch_get(tcpc->fwnode); - if (!port->role_sw) + if (IS_ERR_OR_NULL(port->role_sw)) port->role_sw = usb_role_switch_get(port->dev); if (IS_ERR(port->role_sw)) { err = PTR_ERR(port->role_sw); --- base-commit: 765e56e41a5af2d456ddda6cbd617b9d3295ab4e change-id: 20251127-fix-ppp-power-6d47f3a746f8 Best regards, -- Arnaud Ferraris <arnaud.ferraris(a)collabora.com>

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[PATCH AUTOSEL 6.18] scsi: mpi3mr: Prevent duplicate SAS/SATA device entries in channel 1

by Sasha Levin

From: Suganath Prabu S <suganath-prabu.subramani(a)broadcom.com> [ Upstream commit 4588e65cfd66fc8bbd9969ea730db39b60a36a30 ] Avoid scanning SAS/SATA devices in channel 1 when SAS transport is enabled, as the SAS/SATA devices are exposed through channel 0. Signed-off-by: Suganath Prabu S <suganath-prabu.subramani(a)broadcom.com> Signed-off-by: Ranjan Kumar <ranjan.kumar(a)broadcom.com> Link: https://lore.kernel.org/stable/20251120071955.463475-1-suganath-prabu.subra… Link: https://patch.msgid.link/20251120071955.463475-1-suganath-prabu.subramani@b… Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- LLM Generated explanations, may be completely bogus: ### DEPENDENCY VERIFICATION The `non_stl` field and `sas_transport_enabled` were both introduced in commit c4723e68a0d81 ("scsi: mpi3mr: Enable STL on HBAs where multipath is disabled") from August 2022 (Linux 6.0 cycle). This means the patch is only applicable to stable kernels 6.1.y and later (not 5.15.y). ### SUMMARY **Bug being fixed**: Duplicate SAS/SATA device entries appearing in both channel 0 (SAS transport) and channel 1 (generic SCSI) when SAS transport is enabled, causing user confusion and management issues. **Stable kernel criteria assessment**: - ✅ **Obviously correct**: Simple conditional checks with clear logic - ✅ **Fixes a real bug**: Duplicate device enumeration is a real user- visible issue - ✅ **Small and contained**: Only 4 lines of actual code change - ✅ **No new features**: Just corrects existing device enumeration logic - ✅ **Tested**: Merged through maintainer tree with proper sign-offs - ✅ **Intentional stable submission**: Link to stable mailing list present **Risk vs Benefit**: - **Risk**: Very low - simple conditional check, worst case is device visibility issue - **Benefit**: Fixes confusing duplicate device entries for MPI3MR users with SAS transport **Concerns**: 1. Requires commit c4723e68a0d81 to be present (6.1.y and later only) 2. Version bump in header should be stripped for stable backport The explicit submission to the stable mailing list, the small surgical nature of the fix, and the clear bug it addresses make this a valid stable backport candidate for kernels 6.1.y and newer. **YES** drivers/scsi/mpi3mr/mpi3mr.h | 4 ++-- drivers/scsi/mpi3mr/mpi3mr_os.c | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index 6742684e2990a..31d68c151b207 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -56,8 +56,8 @@ extern struct list_head mrioc_list; extern int prot_mask; extern atomic64_t event_counter; -#define MPI3MR_DRIVER_VERSION "8.15.0.5.50" -#define MPI3MR_DRIVER_RELDATE "12-August-2025" +#define MPI3MR_DRIVER_VERSION "8.15.0.5.51" +#define MPI3MR_DRIVER_RELDATE "18-November-2025" #define MPI3MR_DRIVER_NAME "mpi3mr" #define MPI3MR_DRIVER_LICENSE "GPL" diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c index b88633e1efe27..d4ca878d08869 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_os.c +++ b/drivers/scsi/mpi3mr/mpi3mr_os.c @@ -1184,6 +1184,8 @@ static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, if (is_added == true) tgtdev->io_throttle_enabled = (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0; + if (!mrioc->sas_transport_enabled) + tgtdev->non_stl = 1; switch (flags & MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_MASK) { case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_256_LB: @@ -4844,7 +4846,7 @@ static int mpi3mr_target_alloc(struct scsi_target *starget) spin_lock_irqsave(&mrioc->tgtdev_lock, flags); if (starget->channel == mrioc->scsi_device_channel) { tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); - if (tgt_dev && !tgt_dev->is_hidden) { + if (tgt_dev && !tgt_dev->is_hidden && tgt_dev->non_stl) { scsi_tgt_priv_data->starget = starget; scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; -- 2.51.0

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[PATCH 6.6.y 0/2] Backport for CVE-2025-22121

by David Nyström

Signed-off-by: David Nyström <david.nystrom(a)est.tech> --- Ye Bin (2): ext4: introduce ITAIL helper ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() fs/ext4/inode.c | 5 +++++ fs/ext4/xattr.c | 32 ++++---------------------------- fs/ext4/xattr.h | 10 ++++++++++ 3 files changed, 19 insertions(+), 28 deletions(-) --- base-commit: 4791134e4aebe300af2b409dc550610ef69fae3e change-id: 20251212-cve-2025-22121-c30057f1bbcb Best regards, -- David Nyström <david.nystrom(a)est.tech>

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[PATCH] cpufreq: pmac64-cpufreq: Fix refcount leak on error paths

by Miaoqian Lin

of_cpu_device_node_get obtain a reference to the device node which must be released with of_node_put(). Add missing of_node_put() on error paths to fix. Found via static analysis and code review. Fixes: 760287ab90a3 ("cpufreq: pmac64-cpufreq: remove device tree parsing for cpu nodes") Fixes: 4350147a816b ("[PATCH] ppc64: SMU based macs cpufreq support") Cc: stable(a)vger.kernel.org Signed-off-by: Miaoqian Lin <linmq006(a)gmail.com> --- drivers/cpufreq/pmac64-cpufreq.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/pmac64-cpufreq.c b/drivers/cpufreq/pmac64-cpufreq.c index 80897ec8f00e..0e0205b888ba 100644 --- a/drivers/cpufreq/pmac64-cpufreq.c +++ b/drivers/cpufreq/pmac64-cpufreq.c @@ -356,8 +356,10 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpunode) use_volts_smu = 1; else if (of_machine_is_compatible("PowerMac11,2")) use_volts_vdnap = 1; - else - return -ENODEV; + else { + rc = -ENODEV; + goto bail_noprops; + } /* Check 970FX for now */ valp = of_get_property(cpunode, "cpu-version", NULL); @@ -430,8 +432,11 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpunode) * supporting anything else. */ valp = of_get_property(cpunode, "clock-frequency", NULL); - if (!valp) - return -ENODEV; + if (!valp) { + rc = -ENODEV; + goto bail_noprops; + } + max_freq = (*valp)/1000; g5_cpu_freqs[0].frequency = max_freq; g5_cpu_freqs[1].frequency = max_freq/2; -- 2.25.1

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[PATCH v2 RESEND] coresight: etm-perf: Fix reference count leak in etm_setup_aux

by Ma Ke

In etm_setup_aux(), when a user sink is obtained via coresight_get_sink_by_id(), it increments the reference count of the sink device. However, if the sink is used in path building, the path holds a reference, but the initial reference from coresight_get_sink_by_id() is not released, causing a reference count leak. We should release the initial reference after the path is built. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 0e6c20517596 ("coresight: etm-perf: Allow an event to use different sinks") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- Changes in v2: - modified the patch as suggestions. --- drivers/hwtracing/coresight/coresight-etm-perf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 17afa0f4cdee..56d012ab6d3a 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -454,6 +454,11 @@ static void *etm_setup_aux(struct perf_event *event, void **pages, goto err; out: + if (user_sink) { + put_device(&user_sink->dev); + user_sink = NULL; + } + return event_data; err: -- 2.17.1

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[PATCH v2] USB: Fix error handling in gadget driver

by Ma Ke

lpc32xx_udc_probe() acquires an i2c_client reference through isp1301_get_client() but fails to release it in both error handling paths and the normal removal path. This could result in a reference count leak for the I2C device, preventing proper cleanup and potentially leading to resource exhaustion. Add put_device() to release the reference in the probe failure path and in the remove function. Calling path: isp1301_get_client() -> of_find_i2c_device_by_node() -> i2c_find_device_by_fwnode(). As comments of i2c_find_device_by_fwnode() says, 'The user must call put_device(&client->dev) once done with the i2c client.' Found by code review. Cc: stable(a)vger.kernel.org Fixes: 24a28e428351 ("USB: gadget driver for LPC32xx") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- Changes in v2: - simplified the patch as suggestions. --- drivers/usb/gadget/udc/lpc32xx_udc.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index 1a7d3c4f652f..73c0f28a8585 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -3020,7 +3020,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) pdev->dev.dma_mask = &lpc32xx_usbd_dmamask; retval = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); if (retval) - return retval; + goto i2c_fail; udc->board = &lpc32xx_usbddata; @@ -3038,28 +3038,32 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) /* Get IRQs */ for (i = 0; i < 4; i++) { udc->udp_irq[i] = platform_get_irq(pdev, i); - if (udc->udp_irq[i] < 0) - return udc->udp_irq[i]; + if (udc->udp_irq[i] < 0) { + retval = udc->udp_irq[i]; + goto i2c_fail; + } } udc->udp_baseaddr = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(udc->udp_baseaddr)) { dev_err(udc->dev, "IO map failure\n"); - return PTR_ERR(udc->udp_baseaddr); + retval = PTR_ERR(udc->udp_baseaddr); + goto i2c_fail; } /* Get USB device clock */ udc->usb_slv_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(udc->usb_slv_clk)) { dev_err(udc->dev, "failed to acquire USB device clock\n"); - return PTR_ERR(udc->usb_slv_clk); + retval = PTR_ERR(udc->usb_slv_clk); + goto i2c_fail; } /* Enable USB device clock */ retval = clk_prepare_enable(udc->usb_slv_clk); if (retval < 0) { dev_err(udc->dev, "failed to start USB device clock\n"); - return retval; + goto i2c_fail; } /* Setup deferred workqueue data */ @@ -3161,6 +3165,8 @@ static int lpc32xx_udc_probe(struct platform_device *pdev) dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, udc->udca_v_base, udc->udca_p_base); i2c_fail: + if (udc->isp1301_i2c_client) + put_device(&udc->isp1301_i2c_client->dev); clk_disable_unprepare(udc->usb_slv_clk); dev_err(udc->dev, "%s probe failed, %d\n", driver_name, retval); @@ -3189,6 +3195,9 @@ static void lpc32xx_udc_remove(struct platform_device *pdev) dma_free_coherent(&pdev->dev, UDCA_BUFF_SIZE, udc->udca_v_base, udc->udca_p_base); + if (udc->isp1301_i2c_client) + put_device(&udc->isp1301_i2c_client->dev); + clk_disable_unprepare(udc->usb_slv_clk); } -- 2.17.1

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[PATCH] rpmsg: core: fix race in driver_override_show() and use core helper

by Gui-Dong Han

The driver_override_show function reads the driver_override string without holding the device_lock. However, the store function modifies and frees the string while holding the device_lock. This creates a race condition where the string can be freed by the store function while being read by the show function, leading to a use-after-free. To fix this, replace the rpmsg_string_attr macro with explicit show and store functions. The new driver_override_store uses the standard driver_set_override helper. Since the introduction of driver_set_override, the comments in include/linux/rpmsg.h have stated that this helper must be used to set or clear driver_override, but the implementation was not updated until now. Because driver_set_override modifies and frees the string while holding the device_lock, the new driver_override_show now correctly holds the device_lock during the read operation to prevent the race. Additionally, since rpmsg_string_attr has only ever been used for driver_override, removing the macro simplifies the code. Fixes: 39e47767ec9b ("rpmsg: Add driver_override device attribute for rpmsg_device") Cc: stable(a)vger.kernel.org Signed-off-by: Gui-Dong Han <hanguidong02(a)gmail.com> --- I verified this with a stress test that continuously writes/reads the attribute. It triggered KASAN and leaked bytes like a0 f4 81 9f a3 ff ff (likely kernel pointers). Since driver_override is world-readable (0644), this allows unprivileged users to leak kernel pointers and bypass KASLR. Similar races were fixed in other buses (e.g., commits 9561475db680 and 91d44c1afc61). Currently, 9 of 11 buses handle this correctly; this patch fixes one of the remaining two. --- drivers/rpmsg/rpmsg_core.c | 66 ++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 39 deletions(-) diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index 5d661681a9b6..96964745065b 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -352,50 +352,38 @@ field##_show(struct device *dev, \ } \ static DEVICE_ATTR_RO(field); -#define rpmsg_string_attr(field, member) \ -static ssize_t \ -field##_store(struct device *dev, struct device_attribute *attr, \ - const char *buf, size_t sz) \ -{ \ - struct rpmsg_device *rpdev = to_rpmsg_device(dev); \ - const char *old; \ - char *new; \ - \ - new = kstrndup(buf, sz, GFP_KERNEL); \ - if (!new) \ - return -ENOMEM; \ - new[strcspn(new, "\n")] = '\0'; \ - \ - device_lock(dev); \ - old = rpdev->member; \ - if (strlen(new)) { \ - rpdev->member = new; \ - } else { \ - kfree(new); \ - rpdev->member = NULL; \ - } \ - device_unlock(dev); \ - \ - kfree(old); \ - \ - return sz; \ -} \ -static ssize_t \ -field##_show(struct device *dev, \ - struct device_attribute *attr, char *buf) \ -{ \ - struct rpmsg_device *rpdev = to_rpmsg_device(dev); \ - \ - return sprintf(buf, "%s\n", rpdev->member); \ -} \ -static DEVICE_ATTR_RW(field) - /* for more info, see Documentation/ABI/testing/sysfs-bus-rpmsg */ rpmsg_show_attr(name, id.name, "%s\n"); rpmsg_show_attr(src, src, "0x%x\n"); rpmsg_show_attr(dst, dst, "0x%x\n"); rpmsg_show_attr(announce, announce ? "true" : "false", "%s\n"); -rpmsg_string_attr(driver_override, driver_override); + +static ssize_t driver_override_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct rpmsg_device *rpdev = to_rpmsg_device(dev); + int ret; + + ret = driver_set_override(dev, &rpdev->driver_override, buf, count); + if (ret) + return ret; + + return count; +} + +static ssize_t driver_override_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct rpmsg_device *rpdev = to_rpmsg_device(dev); + ssize_t len; + + device_lock(dev); + len = sysfs_emit(buf, "%s\n", rpdev->driver_override); + device_unlock(dev); + return len; +} +static DEVICE_ATTR_RW(driver_override); static ssize_t modalias_show(struct device *dev, struct device_attribute *attr, char *buf) -- 2.43.0

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