korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-10 07:44:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

i2c: tegra: replace spin_lock_irqsave with spin_lock in ISR

Browse Source 
As you are already in ISR, it is unnecessary to call spin_lock_irqsave.

Signed-off-by: jun qian <hangdianqj@163.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
jun qian 2018-09-11 07:54:46 -07:00 committed by Wolfram Sang
parent 4e7bca6fc0
commit 3782cc3725
1 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/i2c/busses/i2c-tegra.c
View File

@ -608,11 +608,10 @@ static irqreturn_t tegra_i2c_isr(int irq, void *dev_id)
u32 status;
const u32 status_err = I2C_INT_NO_ACK | I2C_INT_ARBITRATION_LOST;
struct tegra_i2c_dev *i2c_dev = dev_id;
unsigned long flags;
status = i2c_readl(i2c_dev, I2C_INT_STATUS);
spin_lock_irqsave(&i2c_dev->xfer_lock, flags);
spin_lock(&i2c_dev->xfer_lock);
if (status == 0) {
dev_warn(i2c_dev->dev, "irq status 0 %08x %08x %08x\n",
i2c_readl(i2c_dev, I2C_PACKET_TRANSFER_STATUS),
@ -670,7 +669,7 @@ err:
complete(&i2c_dev->msg_complete);
done:
spin_unlock_irqrestore(&i2c_dev->xfer_lock, flags);
spin_unlock(&i2c_dev->xfer_lock);
return IRQ_HANDLED;
}