Bart Van Assche d2875b812b scsi: ufs: core: Fix a deadlock in the frequency scaling code ... Commit 08b12cda6c ("scsi: ufs: core: Switch to scsi_get_internal_cmd()") accidentally introduced a deadlock in the frequency scaling code. ufshcd_clock_scaling_unprepare() may submit a device management command while SCSI command processing is blocked. The deadlock was introduced by using the SCSI core for submitting device management commands (scsi_get_internal_cmd() + blk_execute_rq()). Fix this deadlock by calling blk_mq_unquiesce_tagset() before any device management commands are submitted by ufshcd_clock_scaling_unprepare(). Fixes: 08b12cda6c ("scsi: ufs: core: Switch to scsi_get_internal_cmd()") Reported-by: Manivannan Sadhasivam <mani@kernel.org> Reported-by: Roger Shimizu <rosh@debian.org> Closes: https://lore.kernel.org/linux-scsi/ehorjaflathzab5oekx2nae2zss5vi2r36yqkqsfjb2fgsifz2@yk3us5g3igow/ Tested-by: Roger Shimizu <rosh@debian.org> Cc: Nitin Rawat <nitin.rawat@oss.qualcomm.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Peter Wang <peter.wang@mediatek.com> Reviewed-by: Nitin Rawat <nitin.rawat@oss.qualcomm.com> Tested-by: Alexey Klimov <alexey.klimov@linaro.org> # RB5 board Link: https://patch.msgid.link/20251204181548.1006696-1-bvanassche@acm.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2025-12-08 21:58:28 -05:00
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Kconfig	…
Makefile	scsi: ufs: core: Add OP-TEE based RPMB driver for UFS devices	2025-11-10 12:49:43 -05:00
ufs-debugfs.c	…
ufs-debugfs.h	…
ufs-fault-injection.c	fault-inject: improve build for CONFIG_FAULT_INJECTION=n	2024-09-01 20:43:33 -07:00
ufs-fault-injection.h	…
ufs-hwmon.c	…
ufs-mcq.c	scsi: ufs: core: Switch to scsi_get_internal_cmd()	2025-11-12 17:02:34 -05:00
ufs-rpmb.c	scsi: ufs: core: Add OP-TEE based RPMB driver for UFS devices	2025-11-10 12:49:43 -05:00
ufs-sysfs.c	Merge branch 6.18/scsi-fixes into 6.19/scsi-staging	2025-11-19 22:59:25 -05:00
ufs-sysfs.h	scsi: ufs: core: Revert "Make HID attributes visible"	2025-10-29 23:12:33 -04:00
ufs_bsg.c	scsi: ufs: core: Remove an unnecessary NULL pointer check	2025-11-12 20:58:28 -05:00
ufs_bsg.h	…
ufs_trace.h	scsi: ufs: core: Remove UFS_DEV_COMP	2025-10-23 22:18:12 -04:00
ufs_trace_types.h	scsi: ufs: core: Remove UFS_DEV_COMP	2025-10-23 22:18:12 -04:00
ufshcd-crypto.c	blk-crypto: add basic hardware-wrapped key support	2025-02-10 09:54:19 -07:00
ufshcd-crypto.h	scsi: ufs: core: Optimize the hot path	2025-11-12 17:02:34 -05:00
ufshcd-priv.h	Merge patch series "Add OP-TEE based RPMB driver for UFS devices"	2025-11-20 10:26:13 -05:00
ufshcd.c	scsi: ufs: core: Fix a deadlock in the frequency scaling code	2025-12-08 21:58:28 -05:00