Upstream commit 3e9efc3299dd ("i2c: aspeed: Handle master/slave combined irq events properly") reworked the interrupt handling and fixed a warning in the process:
drivers/i2c/busses/i2c-aspeed.c: In function 'aspeed_i2c_bus_irq': drivers/i2c/busses/i2c-aspeed.c:567:1: error: label 'out' defined but not used [-Werror=unused-label]
The warning is still present in v4.19.8 and can be fixed either by applying that original patch, or by adding a simple #ifdef.
Here, I choose the second simpler option as the original patch seems too invasive for a stable backport.
Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/i2c/busses/i2c-aspeed.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c index a4f956c6d567..a19fbff16861 100644 --- a/drivers/i2c/busses/i2c-aspeed.c +++ b/drivers/i2c/busses/i2c-aspeed.c @@ -555,7 +555,7 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id) spin_lock(&bus->lock);
#if IS_ENABLED(CONFIG_I2C_SLAVE) - if (aspeed_i2c_slave_irq(bus)) { + if (IS_ENABLED(CONFIG_I2C_SLAVE) && aspeed_i2c_slave_irq(bus)) { dev_dbg(bus->dev, "irq handled by slave.\n"); ret = true; goto out; @@ -564,7 +564,9 @@ static irqreturn_t aspeed_i2c_bus_irq(int irq, void *dev_id)
ret = aspeed_i2c_master_irq(bus);
+#if IS_ENABLED(CONFIG_I2C_SLAVE) out: +#endif spin_unlock(&bus->lock); return ret ? IRQ_HANDLED : IRQ_NONE; }