scsi: ufs: core: Revert "Delegate the interrupt service routine to a threaded IRQ handler"

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There have been multiple reports of performance regressions caused by
commit 3c7ac40d73 ("scsi: ufs: core: Delegate the interrupt service
routine to a threaded IRQ handler"). Hence this revert.

This patch reverts most of the following commits:

 * 3c7ac40d73 ("scsi: ufs: core: Delegate the interrupt service
   routine to a threaded IRQ handler")

 * 6475cfb81f ("scsi: ufs: core: Avoid IRQ thread wakeup during active
   UIC command")

This patch preserves the following commits:

 * 034d319c88 ("scsi: ufs: core: Fix interrupt handling for MCQ Mode")

 * eabcac808c ("scsi: ufs: core: Fix IRQ lock inversion for the SCSI
   host lock")

Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: 孙魁 (Kui Sun) <kui.sun@unisoc.com>
Cc: André Draszik <andre.draszik@linaro.org>
Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Fixes: 3c7ac40d73 ("scsi: ufs: core: Delegate the interrupt service routine to a threaded IRQ handler")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: André Draszik <andre.draszik@linaro.org> # on Pixel 6
Reviewed-by: André Draszik <andre.draszik@linaro.org>
Link: https://patch.msgid.link/b70eb60a01f971bed68c42c5b555929db5f835df.1784135511.git.bvanassche@acm.org
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Bart Van Assche 2026-07-15 10:12:28 -07:00 • committed by Martin K. Petersen

parent f71b4a3098

commit 8a309036f5

1 changed files with 3 additions and 36 deletions

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39

drivers/ufs/core/ufshcd.c

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