[PATCH 5.14 092/432] scsi: ufs: Use DECLARE_COMPLETION_ONSTACK() where appropriate
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-09-16 17:20:24
Also in:
lkml
Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
From: Bart Van Assche <bvanassche@acm.org> [ Upstream commit 8a686f26eaa4b8a5c494b6b69e8a97815e3ffb82 ]
From Documentation/scheduler/completion.rst: "When a completion is declared
as a local variable within a function, then the initialization should always use DECLARE_COMPLETION_ONSTACK() explicitly, not just to make lockdep happy, but also to make it clear that limited scope had been considered and is intentional." Link: https://lore.kernel.org/r/20210722033439.26550-6-bvanassche@acm.org (local) Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Stanley Chu <redacted> Cc: Can Guo <redacted> Cc: Asutosh Das <redacted> Cc: Avri Altman <avri.altman@wdc.com> Reviewed-by: Avri Altman <avri.altman@wdc.com> Reviewed-by: Bean Huo <redacted> Reviewed-by: Daejun Park <redacted> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/scsi/ufs/ufshcd.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 179227180961..0fe559ddc789 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c@@ -2949,11 +2949,11 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, enum dev_cmd_type cmd_type, int timeout) { struct request_queue *q = hba->cmd_queue; + DECLARE_COMPLETION_ONSTACK(wait); struct request *req; struct ufshcd_lrb *lrbp; int err; int tag; - struct completion wait; down_read(&hba->clk_scaling_lock);
@@ -2978,7 +2978,6 @@ static int ufshcd_exec_dev_cmd(struct ufs_hba *hba, goto out; } - init_completion(&wait); lrbp = &hba->lrb[tag]; WARN_ON(lrbp->cmd); err = ufshcd_compose_dev_cmd(hba, lrbp, cmd_type, tag);
@@ -3985,14 +3984,13 @@ EXPORT_SYMBOL_GPL(ufshcd_dme_get_attr); */ static int ufshcd_uic_pwr_ctrl(struct ufs_hba *hba, struct uic_command *cmd) { - struct completion uic_async_done; + DECLARE_COMPLETION_ONSTACK(uic_async_done); unsigned long flags; u8 status; int ret; bool reenable_intr = false; mutex_lock(&hba->uic_cmd_mutex); - init_completion(&uic_async_done); ufshcd_add_delay_before_dme_cmd(hba); spin_lock_irqsave(hba->host->host_lock, flags);
@@ -6665,11 +6663,11 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba, enum query_opcode desc_op) { struct request_queue *q = hba->cmd_queue; + DECLARE_COMPLETION_ONSTACK(wait); struct request *req; struct ufshcd_lrb *lrbp; int err = 0; int tag; - struct completion wait; u8 upiu_flags; down_read(&hba->clk_scaling_lock);
@@ -6687,7 +6685,6 @@ static int ufshcd_issue_devman_upiu_cmd(struct ufs_hba *hba, goto out; } - init_completion(&wait); lrbp = &hba->lrb[tag]; WARN_ON(lrbp->cmd); lrbp->cmd = NULL;
--
2.30.2