kernel/git/stable/linux-stable.git/include/ufs, branch linux-6.17.y

scsi: ufs: core: Move the ufshcd_enable_intr() declaration

2025-12-18T12:59:23+00:00

[ Upstream commit b30006b5bec1dcba207bc42e7f7cd96a568acc27 ] ufshcd_enable_intr() is not exported and hence should not be declared in include/ufs/ufshcd.h. Fixes: 253757797973 ("scsi: ufs: core: Change MCQ interrupt enable flow") Signed-off-by: Bart Van Assche Reviewed-by: Peter Wang Link: https://patch.msgid.link/20251014200118.3390839-7-bvanassche@acm.org Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: core: Add a quirk to suppress link_startup_again

2025-11-13T20:37:48+00:00

commit d34caa89a132cd69efc48361d4772251546fdb88 upstream. ufshcd_link_startup() has a facility (link_startup_again) to issue DME_LINKSTARTUP a 2nd time even though the 1st time was successful. Some older hardware benefits from that, however the behaviour is non-standard, and has been found to cause link startup to be unreliable for some Intel Alder Lake based host controllers. Add UFSHCD_QUIRK_PERFORM_LINK_STARTUP_ONCE to suppress link_startup_again, in preparation for setting the quirk for affected controllers. Fixes: 7dc9fb47bc9a ("scsi: ufs: ufs-pci: Add support for Intel ADL") Cc: stable@vger.kernel.org Signed-off-by: Adrian Hunter Reviewed-by: Bart Van Assche Link: https://patch.msgid.link/20251024085918.31825-3-adrian.hunter@intel.com Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: ufs: core: Include UTP error in INT_FATAL_ERRORS

2025-11-13T20:37:37+00:00

[ Upstream commit 558ae4579810fa0fef011944230c65a6f3087f85 ] When a UTP error occurs in isolation, UFS is not currently recoverable. This is because the UTP error is not considered fatal in the error handling code, leading to either an I/O timeout or an OCS error. Add the UTP error flag to INT_FATAL_ERRORS so the controller will be reset in this situation. sd 0:0:0:0: [sda] tag#38 UNKNOWN(0x2003) Result: hostbyte=0x07 driverbyte=DRIVER_OK cmd_age=0s sd 0:0:0:0: [sda] tag#38 CDB: opcode=0x28 28 00 00 51 24 e2 00 00 08 00 I/O error, dev sda, sector 42542864 op 0x0:(READ) flags 0x80700 phys_seg 8 prio class 2 OCS error from controller = 9 for tag 39 pa_err[1] = 0x80000010 at 2667224756 us pa_err: total cnt=2 dl_err[0] = 0x80000002 at 2667148060 us dl_err[1] = 0x80002000 at 2667282844 us No record of nl_err No record of tl_err No record of dme_err No record of auto_hibern8_err fatal_err[0] = 0x804 at 2667282836 us --------------------------------------------------- REGISTER --------------------------------------------------- NAME OFFSET VALUE STD HCI SFR 0xfffffff0 0x0 AHIT 0x18 0x814 INTERRUPT STATUS 0x20 0x1000 INTERRUPT ENABLE 0x24 0x70ef5 [mkp: commit desc] Signed-off-by: Hoyoung Seo Reviewed-by: Bart Van Assche Message-Id: <20250930061428.617955-1-hy50.seo@samsung.com> Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: core: Change MCQ interrupt enable flow

2025-11-13T20:37:30+00:00

[ Upstream commit 253757797973c54ea967f8fd8f40d16e4a78e6d4 ] Move the MCQ interrupt enable process to ufshcd_mcq_make_queues_operational() to ensure that interrupts are set correctly when making queues operational, similar to ufshcd_make_hba_operational(). This change addresses the issue where ufshcd_mcq_make_queues_operational() was not fully operational due to missing interrupt enablement. This change only affects host drivers that call ufshcd_mcq_make_queues_operational(), i.e. ufs-mediatek. Signed-off-by: Peter Wang Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: core: Disable timestamp functionality if not supported

2025-11-13T20:37:25+00:00

[ Upstream commit fb1f4568346153d2f80fdb4ffcfa0cf4fb257d3c ] Some Kioxia UFS 4 devices do not support the qTimestamp attribute. Set the UFS_DEVICE_QUIRK_NO_TIMESTAMP_SUPPORT for these devices such that no error messages appear in the kernel log about failures to set the qTimestamp attribute. Signed-off-by: Bart Van Assche Reviewed-by: Avri Altman Tested-by: Nitin Rawat # on SM8650-QRD Reviewed-by: Nitin Rawat Reviewed-by: Peter Wang Reviewed-by: Manivannan Sadhasivam Message-ID: <20250909190614.3531435-1-bvanassche@acm.org> Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: host: mediatek: Enhance recovery on hibernation exit failure

2025-11-13T20:37:18+00:00

[ Upstream commit faac32d4ece30609f1a0930ca0ae951cf6dc1786 ] Improve the recovery process for hibernation exit failures. Trigger the error handler and break the suspend operation to ensure effective recovery from hibernation errors. Activate the error handling mechanism by ufshcd_force_error_recovery and scheduling the error handler work. Signed-off-by: Peter Wang Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

scsi: ufs: core: Fix data race in CPU latency PM QoS request handling

2025-10-15T10:04:08+00:00

[ Upstream commit 79dde5f7dc7c038eec903745dc1550cd4139980e ] The cpu_latency_qos_add/remove/update_request interfaces lack internal synchronization by design, requiring the caller to ensure thread safety. The current implementation relies on the 'pm_qos_enabled' flag, which is insufficient to prevent concurrent access and cannot serve as a proper synchronization mechanism. This has led to data races and list corruption issues. A typical race condition call trace is: [Thread A] ufshcd_pm_qos_exit() --> cpu_latency_qos_remove_request() --> cpu_latency_qos_apply(); --> pm_qos_update_target() --> plist_del <--(1) delete plist node --> memset(req, 0, sizeof(*req)); --> hba->pm_qos_enabled = false; [Thread B] ufshcd_devfreq_target --> ufshcd_devfreq_scale --> ufshcd_scale_clks --> ufshcd_pm_qos_update <--(2) pm_qos_enabled is true --> cpu_latency_qos_update_request --> pm_qos_update_target --> plist_del <--(3) plist node use-after-free Introduces a dedicated mutex to serialize PM QoS operations, preventing data races and ensuring safe access to PM QoS resources, including sysfs interface reads. Fixes: 2777e73fc154 ("scsi: ufs: core: Add CPU latency QoS support for UFS driver") Signed-off-by: Zhongqiu Han Reviewed-by: Bart Van Assche Tested-by: Huan Tang Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin

Merge patch series "ufs: ufs-qcom: Align programming sequence as per HW spec"

2025-07-15T01:00:41+00:00

Nitin Rawat says: This patch series adds programming support for Qualcomm UFS to align with Hardware Specification. In this patch series below changes are taken care. 1. Enable QUnipro Internal Clock Gating 2. Update esi_vec_mask for HW major version >= 6 Link: https://lore.kernel.org/r/20250714075336.2133-1-quic_nitirawa@quicinc.com Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add ufshcd_dme_rmw() to modify DME attributes

2025-07-14T22:25:10+00:00

Introduce ufshcd_dme_rmw() API to read, modify, and write DME attributes in UFS host controllers using a mask and value. Signed-off-by: Nitin Rawat Link: https://lore.kernel.org/r/20250714075336.2133-3-quic_nitirawa@quicinc.com Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: ufs: core: Add HID support

2025-06-10T01:52:11+00:00

Follow JESD220G, support HID(Host Initiated Defragmentation) through sysfs, the relevant sysfs nodes are as follows: 1. analysis_trigger 2. defrag_trigger 3. fragmented_size 4. defrag_size 5. progress_ratio 6. state The detailed definition of the six nodes can be found in the sysfs documentation. HID's execution policy is given to user-space. Signed-off-by: Huan Tang Signed-off-by: Wenxing Cheng Link: https://lore.kernel.org/r/20250523064604.800-1-tanghuan@vivo.com Suggested-by: Bart Van Assche Reviewed-by: Peter Wang Reviewed-by: Bean Huo Reviewed-by: Bart Van Assche Reviewed-by: Yangtao Li Signed-off-by: Martin K. Petersen