lkml.org 
[lkml]   [2021]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH for-next 18/32] scsi: mesh: Replace spin_lock_irqsave with spin_lock in hard IRQ
Date
It is redundant to do irqsave and irqrestore in hardIRQ context, where
it has been in a irq-disabled context.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
---
drivers/scsi/mesh.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/mesh.c b/drivers/scsi/mesh.c
index 0a9f4e4..67c660a 100644
--- a/drivers/scsi/mesh.c
+++ b/drivers/scsi/mesh.c
@@ -1018,13 +1018,12 @@ static void handle_reset(struct mesh_state *ms)

static irqreturn_t do_mesh_interrupt(int irq, void *dev_id)
{
- unsigned long flags;
struct mesh_state *ms = dev_id;
struct Scsi_Host *dev = ms->host;

- spin_lock_irqsave(dev->host_lock, flags);
+ spin_lock(dev->host_lock);
mesh_interrupt(ms);
- spin_unlock_irqrestore(dev->host_lock, flags);
+ spin_unlock(dev->host_lock);
return IRQ_HANDLED;
}

--
2.8.1
\
 
 \ /
  Last update: 2021-02-07 12:43    [W:0.212 / U:4.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site