@@ -1042,6 +1042,7 @@ static irqreturn_t dm9000_interrupt(int irq, void *dev_id)
int int_status;
unsigned long flags;
u8 reg_save;
+ irqreturn_t ret = IRQ_NONE;
dm9000_dbg(db, 3, "entering %s\n", __func__);
@@ -1064,17 +1065,22 @@ static irqreturn_t dm9000_interrupt(int irq, void *dev_id)
dev_dbg(db->dev, "interrupt status %02x\n", int_status);
/* Received the coming packet */
- if (int_status & ISR_PRS)
+ if (int_status & ISR_PRS) {
dm9000_rx(dev);
+ ret = IRQ_HANDLED;
+ }
/* Trnasmit Interrupt check */
- if (int_status & ISR_PTS)
+ if (int_status & ISR_PTS) {
dm9000_tx_done(dev, db);
+ ret = IRQ_HANDLED;
+ }
if (db->type != TYPE_DM9000E) {
if (int_status & ISR_LNKCHNG) {
/* fire a link-change request */
schedule_delayed_work(&db->phy_poll, 1);
+ ret = IRQ_HANDLED;
}
}
@@ -1086,7 +1092,7 @@ static irqreturn_t dm9000_interrupt(int irq, void *dev_id)
spin_unlock_irqrestore(&db->lock, flags);
- return IRQ_HANDLED;
+ return ret;
}
static irqreturn_t dm9000_wol_interrupt(int irq, void *dev_id)
The dm9000 driver requests a shared interrupt but doesn't return IRQ_NONE when the device didn't generate the interrupt. This could lead to the other devices sharing the irq never getting an interrupt. This patch makes the routine return IRQ_NONE for the path where no work was done. Signed-off-by: Daniel Morsing <daniel.morsing@gmail.com> Cc: stable@kernel.org --- drivers/net/dm9000.c | 12 +++++++++--- 1 files changed, 9 insertions(+), 3 deletions(-)