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imx9_flexcan: use small lock in arch/arm/src/imx9/imx9_flexcan.c

Browse source 
reason:
We would like to replace the big lock with a small lock.

Signed-off-by: hujun5 <hujun5@xiaomi.com>
This commit is contained in:
hujun5 2024-12-19 20:09:00 +08:00 committed by Xiang Xiao
parent a8353eef51
commit 2b762267f3
1 changed files with 10 additions and 5 deletions
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15
arch/arm/src/imx9/imx9_flexcan.c
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@ -312,6 +312,7 @@ struct imx9_driver_s
struct flexcan_timeseg data_timing; /* Timing for data phase */
const struct flexcan_config_s *config;
spinlock_t lock;
#ifdef CONFIG_NET_CAN_RAW_TX_DEADLINE
struct txmbstats txmb[TXMBCOUNT];
@ -811,7 +812,8 @@ static int imx9_txpoll(struct net_driver_s *dev)
* the field d_len is set to a value > 0.
*/
flags = spin_lock_irqsave(NULL);
flags = spin_lock_irqsave(&priv->lock);
sched_lock();
if (priv->dev.d_len > 0)
{
@ -827,12 +829,14 @@ static int imx9_txpoll(struct net_driver_s *dev)
if (imx9_txringfull(priv))
{
spin_unlock_irqrestore(NULL, flags);
sched_unlock();
spin_unlock_irqrestore(&priv->lock, flags);
return -EBUSY;
}
}
spin_unlock_irqrestore(NULL, flags);
sched_unlock();
spin_unlock_irqrestore(&priv->lock, flags);
/* If zero is returned, the polling will continue until all connections
* have been examined.
@ -1642,7 +1646,7 @@ static int imx9_init_eccram(struct imx9_driver_s *priv)
uint32_t regval;
irqstate_t flags;
flags = enter_critical_section();
flags = spin_lock_irqsave(&priv->lock);
regval = getreg32(priv->base + IMX9_CAN_CTRL2_OFFSET);
@ -1668,7 +1672,7 @@ static int imx9_init_eccram(struct imx9_driver_s *priv)
regval &= ~CAN_CTRL2_WRMFRZ;
leave_critical_section(flags);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
@ -2105,6 +2109,7 @@ int imx9_caninitialize(int intf)
priv->dev.d_ioctl = imx9_ioctl; /* Support CAN ioctl() calls */
#endif
priv->dev.d_private = (void *)priv; /* Used to recover private state from dev */
spin_lock_init(&priv->lock);
/* Put the interface in the down state. This usually amounts to resetting
* the device and/or calling imx9_ifdown().