system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-30 00:10:51 +00:00
Code Issues Packages Projects Releases Wiki Activity

pinctrl: renesas: rzg2l: Use spin_{lock,unlock}_irq{save,restore}

Browse source 
On PREEMPT_RT kernels the spinlock_t maps to an rtmutex. Using
raw_spin_lock_irqsave()/raw_spin_unlock_irqrestore() on
&pctrl->lock.rlock breaks the PREEMPT_RT builds. To fix this use
spin_lock_irqsave()/spin_unlock_irqrestore() on &pctrl->lock.

Fixes: 02cd2d3be1 ("pinctrl: renesas: rzg2l: Configure the interrupt type on resume")
Reported-by: Diederik de Haas <didi.debian@cknow.org>
Closes: https://lore.kernel.org/all/131999629.KQPSlr0Zke@bagend
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20240522055421.2842689-1-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Claudiu Beznea 2024-05-22 08:54:21 +03:00 committed by Geert Uytterhoeven
parent 1613e604df
commit a39741d38c
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/pinctrl/renesas/pinctrl-rzg2l.c
View file

@ -2071,11 +2071,11 @@ static void rzg2l_gpio_irq_restore(struct rzg2l_pinctrl *pctrl)
* This has to be atomically executed to protect against a concurrent
* interrupt.
*/
raw_spin_lock_irqsave(&pctrl->lock.rlock, flags);
spin_lock_irqsave(&pctrl->lock, flags);
ret = rzg2l_gpio_irq_set_type(data, irqd_get_trigger_type(data));
if (!ret && !irqd_irq_disabled(data))
rzg2l_gpio_irq_enable(data);
raw_spin_unlock_irqrestore(&pctrl->lock.rlock, flags);
spin_unlock_irqrestore(&pctrl->lock, flags);
if (ret)
dev_crit(pctrl->dev, "Failed to set IRQ type for virq=%u\n", virq);