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([82.78.167.185]) by smtp.gmail.com with ESMTPSA id m16-20020a1709061ed000b00a51c0c0cb86sm1797440ejj.22.2024.04.18.23.38.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 Apr 2024 23:38:52 -0700 (PDT) From: Claudiu X-Google-Original-From: Claudiu To: geert+renesas@glider.be, linus.walleij@linaro.org, biju.das.jz@bp.renesas.com, tglx@linutronix.de Cc: linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, claudiu.beznea@tuxon.dev, Claudiu Beznea Subject: [PATCH v4] pinctrl: renesas: rzg2l: Configure the interrupt type on resume Date: Fri, 19 Apr 2024 09:38:22 +0300 Message-Id: <20240419063822.3467424-1-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Claudiu Beznea Commit dce0919c83c3 ("irqchip/renesas-rzg2l: Do not set TIEN and TINT source at the same time") removed the setup of TINT from rzg2l_irqc_irq_enable(). To address the spourious interrupt issue the setup of TINT has been moved in rzg2l_tint_set_edge() though rzg2l_disable_tint_and_set_tint_source(). With this, the interrupts are not properly re-configured after a suspend-to-RAM cycle. To address this issue and avoid spurious interrupts while resumming set the interrupt type before enabling it. Fixes: dce0919c83c3 ("irqchip/renesas-rzg2l: Do not set TIEN and TINT source at the same time") Signed-off-by: Claudiu Beznea Reviewed-by: Geert Uytterhoeven --- Changes in v4: - moved dev_crit() out of critical section Changes in v3: - none; this patch was part of series at [1] and added in v3 of that series Changes in v2: - none [1] https://lore.kernel.org/all/20240320104230.446400-1-claudiu.beznea.uj@bp.renesas.com/ drivers/pinctrl/renesas/pinctrl-rzg2l.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c index 93916553bcc7..20425afc6b33 100644 --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c @@ -2045,7 +2045,9 @@ static void rzg2l_gpio_irq_restore(struct rzg2l_pinctrl *pctrl) for (unsigned int i = 0; i < RZG2L_TINT_MAX_INTERRUPT; i++) { struct irq_data *data; + unsigned long flags; unsigned int virq; + int ret; if (!pctrl->hwirq[i]) continue; @@ -2063,17 +2065,18 @@ static void rzg2l_gpio_irq_restore(struct rzg2l_pinctrl *pctrl) continue; } - if (!irqd_irq_disabled(data)) { - unsigned long flags; - - /* - * This has to be atomically executed to protect against a concurrent - * interrupt. - */ - raw_spin_lock_irqsave(&pctrl->lock.rlock, flags); + /* + * This has to be atomically executed to protect against a concurrent + * interrupt. + */ + raw_spin_lock_irqsave(&pctrl->lock.rlock, 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); - } + raw_spin_unlock_irqrestore(&pctrl->lock.rlock, flags); + + if (ret) + dev_crit(pctrl->dev, "Failed to set IRQ type for virq=%u\n", virq); } }