From 685c3f80b6d88478a6428676f9daab59faf3cd4b Mon Sep 17 00:00:00 2001
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Thu, 22 Jul 2010 11:56:38 +0200
Subject: [PATCH] firewire: nosy: use flagless variants of spinlock accessors
nosy_start/stop_snoop() are always only called by the ioctl method, i.e.
with IRQs enabled. packet_handler() and bus_reset_handler() are always
only called by the IRQ handler. Hence neither one needs to track IRQ
flags.
To underline the call context of packet_handler() and
bus_reset_handler(), rename these functions to *_irq_handler().
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
drivers/firewire/nosy.c | 30 ++++++++++++------------------
1 file changed, 12 insertions(+), 18 deletions(-)
diff --git a/drivers/firewire/nosy.c b/drivers/firewire/nosy.c
index 637e51485a70..2357e170e930 100644
--- a/drivers/firewire/nosy.c
+++ b/drivers/firewire/nosy.c
@@ -263,21 +263,17 @@ set_phy_reg(struct pcilynx *lynx, int addr, int val)
static void
nosy_start_snoop(struct client *client)
{
- unsigned long flags;
-
- spin_lock_irqsave(&client->lynx->client_list_lock, flags);
+ spin_lock_irq(&client->lynx->client_list_lock);
list_add_tail(&client->link, &client->lynx->client_list);
- spin_unlock_irqrestore(&client->lynx->client_list_lock, flags);
+ spin_unlock_irq(&client->lynx->client_list_lock);
}
static void
nosy_stop_snoop(struct client *client)
{
- unsigned long flags;
-
- spin_lock_irqsave(&client->lynx->client_list_lock, flags);
+ spin_lock_irq(&client->lynx->client_list_lock);
list_del_init(&client->link);
- spin_unlock_irqrestore(&client->lynx->client_list_lock, flags);
+ spin_unlock_irq(&client->lynx->client_list_lock);
}
static struct client *
@@ -410,9 +406,8 @@ struct link_packet {
};
static void
-packet_handler(struct pcilynx *lynx)
+packet_irq_handler(struct pcilynx *lynx)
{
- unsigned long flags;
struct client *client;
u32 tcode_mask;
size_t length;
@@ -432,31 +427,30 @@ packet_handler(struct pcilynx *lynx)
else
tcode_mask = 1 << packet->tcode;
- spin_lock_irqsave(&lynx->client_list_lock, flags);
+ spin_lock(&lynx->client_list_lock);
list_for_each_entry(client, &lynx->client_list, link)
if (client->tcode_mask & tcode_mask)
packet_buffer_put(&client->buffer,
lynx->rcv_buffer, length + 4);
- spin_unlock_irqrestore(&lynx->client_list_lock, flags);
+ spin_unlock(&lynx->client_list_lock);
}
static void
-bus_reset_handler(struct pcilynx *lynx)
+bus_reset_irq_handler(struct pcilynx *lynx)
{
- unsigned long flags;
struct client *client;
struct timeval tv;
do_gettimeofday(&tv);
- spin_lock_irqsave(&lynx->client_list_lock, flags);
+ spin_lock(&lynx->client_list_lock);
list_for_each_entry(client, &lynx->client_list, link)
packet_buffer_put(&client->buffer, &tv.tv_usec, 4);
- spin_unlock_irqrestore(&lynx->client_list_lock, flags);
+ spin_unlock(&lynx->client_list_lock);
}
static irqreturn_t
@@ -478,7 +472,7 @@ irq_handler(int irq, void *device)
reg_write(lynx, LINK_INT_STATUS, link_int_status);
if ((link_int_status & LINK_INT_PHY_BUSRESET) > 0)
- bus_reset_handler(lynx);
+ bus_reset_irq_handler(lynx);
}
/* Clear the PCI_INT_STATUS register only after clearing the
@@ -488,7 +482,7 @@ irq_handler(int irq, void *device)
reg_write(lynx, PCI_INT_STATUS, pci_int_status);
if ((pci_int_status & PCI_INT_DMA0_HLT) > 0) {
- packet_handler(lynx);
+ packet_irq_handler(lynx);
run_pcl(lynx, lynx->rcv_start_pcl_bus, 0);
}
--
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