linux-kernel - [irqchip: irq/irqchip-fixes] irqchip/aspeed-scu: Replace update_bits with write

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Date:   Thu, 25 Nov 2021 17:03:40 -0000
From:   "irqchip-bot for Billy Tsai" <tip-bot2@...utronix.de>
To:     linux-kernel@...r.kernel.org
Cc:     Billy Tsai <billy_tsai@...eedtech.com>,
        Joel Stanley <joel@....id.au>, Marc Zyngier <maz@...nel.org>,
        stable@...r.kernel.org, tglx@...utronix.de
Subject: [irqchip: irq/irqchip-fixes] irqchip/aspeed-scu: Replace update_bits
 with write_bits.

The following commit has been merged into the irq/irqchip-fixes branch of irqchip:

Commit-ID:     8958389681b929fcc7301e7dc5f0da12e4a256a0
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms/8958389681b929fcc7301e7dc5f0da12e4a256a0
Author:        Billy Tsai <billy_tsai@...eedtech.com>
AuthorDate:    Wed, 24 Nov 2021 17:43:48 +08:00
Committer:     Marc Zyngier <maz@...nel.org>
CommitterDate: Thu, 25 Nov 2021 16:50:44 

irqchip/aspeed-scu: Replace update_bits with write_bits.

The interrupt status bits are cleared by writing 1, we should force a
write to clear the interrupt without checking if the value has changed.

Fixes: 04f605906ff0 ("irqchip: Add Aspeed SCU interrupt controller")
Signed-off-by: Billy Tsai <billy_tsai@...eedtech.com>
Reviewed-by: Joel Stanley <joel@....id.au>
Signed-off-by: Marc Zyngier <maz@...nel.org>
Link: https://lore.kernel.org/r/20211124094348.11621-1-billy_tsai@aspeedtech.com
Cc: stable@...r.kernel.org
---
 drivers/irqchip/irq-aspeed-scu-ic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-aspeed-scu-ic.c b/drivers/irqchip/irq-aspeed-scu-ic.c
index f3c6855..18b77c3 100644
--- a/drivers/irqchip/irq-aspeed-scu-ic.c
+++ b/drivers/irqchip/irq-aspeed-scu-ic.c
@@ -76,8 +76,8 @@ static void aspeed_scu_ic_irq_handler(struct irq_desc *desc)
 		generic_handle_domain_irq(scu_ic->irq_domain,
 					  bit - scu_ic->irq_shift);
 
-		regmap_update_bits(scu_ic->scu, scu_ic->reg, mask,
-				   BIT(bit + ASPEED_SCU_IC_STATUS_SHIFT));
+		regmap_write_bits(scu_ic->scu, scu_ic->reg, mask,
+				  BIT(bit + ASPEED_SCU_IC_STATUS_SHIFT));
 	}
 
 	chained_irq_exit(chip, desc);