From ac019360fe311dd6aa11b358a02eb3a61675882e Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jeff@garzik.org>
Date: Sat, 20 Oct 2007 13:45:57 +0200
Subject: [Bluetooth] Eliminate checks for impossible conditions in IRQ handler

Our info structure and info->hdev is always passed to the IRQ handler,
so we don't have to worry about these checks in every interrupt.

Leave a BUG_ON() just to help unwary programmers, but these could
probably be removed as well.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/drivers/bluetooth/bluecard_cs.c b/drivers/bluetooth/bluecard_cs.c
index 851de4d..bcf5792 100644
--- a/drivers/bluetooth/bluecard_cs.c
+++ b/drivers/bluetooth/bluecard_cs.c
@@ -503,10 +503,7 @@ static irqreturn_t bluecard_interrupt(int irq, void *dev_inst)
 	unsigned int iobase;
 	unsigned char reg;
 
-	if (!info || !info->hdev) {
-		BT_ERR("Call of irq %d for unknown device", irq);
-		return IRQ_NONE;
-	}
+	BUG_ON(!info->hdev);
 
 	if (!test_bit(CARD_READY, &(info->hw_state)))
 		return IRQ_HANDLED;
diff --git a/drivers/bluetooth/bt3c_cs.c b/drivers/bluetooth/bt3c_cs.c
index 3951607..a18f9b8 100644
--- a/drivers/bluetooth/bt3c_cs.c
+++ b/drivers/bluetooth/bt3c_cs.c
@@ -344,10 +344,7 @@ static irqreturn_t bt3c_interrupt(int irq, void *dev_inst)
 	unsigned int iobase;
 	int iir;
 
-	if (!info || !info->hdev) {
-		BT_ERR("Call of irq %d for unknown device", irq);
-		return IRQ_NONE;
-	}
+	BUG_ON(!info->hdev);
 
 	iobase = info->p_dev->io.BasePort1;
 
diff --git a/drivers/bluetooth/btuart_cs.c b/drivers/bluetooth/btuart_cs.c
index d7d2ea0..08f48d5 100644
--- a/drivers/bluetooth/btuart_cs.c
+++ b/drivers/bluetooth/btuart_cs.c
@@ -294,10 +294,7 @@ static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
 	int boguscount = 0;
 	int iir, lsr;
 
-	if (!info || !info->hdev) {
-		BT_ERR("Call of irq %d for unknown device", irq);
-		return IRQ_NONE;
-	}
+	BUG_ON(!info->hdev);
 
 	iobase = info->p_dev->io.BasePort1;
 
diff --git a/drivers/bluetooth/dtl1_cs.c b/drivers/bluetooth/dtl1_cs.c
index 7f9c54b..dae45cd 100644
--- a/drivers/bluetooth/dtl1_cs.c
+++ b/drivers/bluetooth/dtl1_cs.c
@@ -298,10 +298,7 @@ static irqreturn_t dtl1_interrupt(int irq, void *dev_inst)
 	int boguscount = 0;
 	int iir, lsr;
 
-	if (!info || !info->hdev) {
-		BT_ERR("Call of irq %d for unknown device", irq);
-		return IRQ_NONE;
-	}
+	BUG_ON(!info->hdev);
 
 	iobase = info->p_dev->io.BasePort1;
 
-- 
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