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irqchip/tb10x: Use 'fallthrough' to eliminate a warning

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Use the 'fallthrough' macro to document that this switch case
does indeed fall through to the next case.

../drivers/irqchip/irq-tb10x.c: In function 'tb10x_irq_set_type':
../drivers/irqchip/irq-tb10x.c:62:13: warning: this statement may fall through [-Wimplicit-fallthrough=]
   62 |   flow_type = IRQ_TYPE_LEVEL_LOW;
../drivers/irqchip/irq-tb10x.c:63:2: note: here
   63 |  case IRQ_TYPE_LEVEL_LOW:
      |  ^~~~

Fixes: b06eb0173e ("irqchip: Add TB10x interrupt controller driver")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210422051620.23021-1-rdunlap@infradead.org
This commit is contained in:
Randy Dunlap 2021-04-21 22:16:20 -07:00 committed by Marc Zyngier
parent 94bc94209a
commit a6992bbe97
1 changed files with 1 additions and 0 deletions
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drivers/irqchip/irq-tb10x.c
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@ -60,6 +60,7 @@ static int tb10x_irq_set_type(struct irq_data *data, unsigned int flow_type)
break;
case IRQ_TYPE_NONE:
flow_type = IRQ_TYPE_LEVEL_LOW;
fallthrough;
case IRQ_TYPE_LEVEL_LOW:
mod ^= im;
pol ^= im;