From 5375659a3df319700d97d911e44926fb43354839 Mon Sep 17 00:00:00 2001
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Wed, 18 Nov 2009 16:01:34 -0300
Subject: [PATCH] V4L/DVB (13410): firedtv: remove an unnecessary function
argument
All read transactions initiated by firedtv are only quadlet-sized, hence
the backend->read call can be simplified a little.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
drivers/media/dvb/firewire/firedtv-1394.c | 4 ++--
drivers/media/dvb/firewire/firedtv-avc.c | 8 ++++----
drivers/media/dvb/firewire/firedtv-fw.c | 5 ++---
drivers/media/dvb/firewire/firedtv.h | 2 +-
4 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/drivers/media/dvb/firewire/firedtv-1394.c b/drivers/media/dvb/firewire/firedtv-1394.c
index ed98fdb650c5..7c5459c27b75 100644
--- a/drivers/media/dvb/firewire/firedtv-1394.c
+++ b/drivers/media/dvb/firewire/firedtv-1394.c
@@ -101,9 +101,9 @@ static int node_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
return ret;
}
-static int node_read(struct firedtv *fdtv, u64 addr, void *data, size_t len)
+static int node_read(struct firedtv *fdtv, u64 addr, void *data)
{
- return hpsb_node_read(node_of(fdtv), addr, data, len);
+ return hpsb_node_read(node_of(fdtv), addr, data, 4);
}
static int node_write(struct firedtv *fdtv, u64 addr, void *data, size_t len)
diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
index 5516c33b1453..50c42a4b972b 100644
--- a/drivers/media/dvb/firewire/firedtv-avc.c
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -1236,14 +1236,14 @@ int avc_ca_get_mmi(struct firedtv *fdtv, char *mmi_object, unsigned int *len)
#define CMP_OUTPUT_PLUG_CONTROL_REG_0 0xfffff0000904ULL
-static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
+static int cmp_read(struct firedtv *fdtv, u64 addr, __be32 *data)
{
int ret;
if (mutex_lock_interruptible(&fdtv->avc_mutex))
return -EINTR;
- ret = fdtv->backend->read(fdtv, addr, buf, len);
+ ret = fdtv->backend->read(fdtv, addr, data);
if (ret < 0)
dev_err(fdtv->device, "CMP: read I/O error\n");
@@ -1293,7 +1293,7 @@ int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
int attempts = 0;
int ret;
- ret = cmp_read(fdtv, opcr, opcr_address, 4);
+ ret = cmp_read(fdtv, opcr_address, opcr);
if (ret < 0)
return ret;
@@ -1357,7 +1357,7 @@ void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
int attempts = 0;
- if (cmp_read(fdtv, opcr, opcr_address, 4) < 0)
+ if (cmp_read(fdtv, opcr_address, opcr) < 0)
return;
repeat:
diff --git a/drivers/media/dvb/firewire/firedtv-fw.c b/drivers/media/dvb/firewire/firedtv-fw.c
index d8408cea335f..fe44789ab037 100644
--- a/drivers/media/dvb/firewire/firedtv-fw.c
+++ b/drivers/media/dvb/firewire/firedtv-fw.c
@@ -46,10 +46,9 @@ static int node_lock(struct firedtv *fdtv, u64 addr, __be32 data[])
return node_req(fdtv, addr, data, 8, TCODE_LOCK_COMPARE_SWAP);
}
-static int node_read(struct firedtv *fdtv, u64 addr, void *data, size_t len)
+static int node_read(struct firedtv *fdtv, u64 addr, void *data)
{
- return node_req(fdtv, addr, data, len, len == 4 ?
- TCODE_READ_QUADLET_REQUEST : TCODE_READ_BLOCK_REQUEST);
+ return node_req(fdtv, addr, data, 4, TCODE_READ_QUADLET_REQUEST);
}
static int node_write(struct firedtv *fdtv, u64 addr, void *data, size_t len)
diff --git a/drivers/media/dvb/firewire/firedtv.h b/drivers/media/dvb/firewire/firedtv.h
index f7b5c030bedf..35080dbb3c66 100644
--- a/drivers/media/dvb/firewire/firedtv.h
+++ b/drivers/media/dvb/firewire/firedtv.h
@@ -74,7 +74,7 @@ struct firedtv;
struct firedtv_backend {
int (*lock)(struct firedtv *fdtv, u64 addr, __be32 data[]);
- int (*read)(struct firedtv *fdtv, u64 addr, void *data, size_t len);
+ int (*read)(struct firedtv *fdtv, u64 addr, void *data);
int (*write)(struct firedtv *fdtv, u64 addr, void *data, size_t len);
int (*start_iso)(struct firedtv *fdtv);
void (*stop_iso)(struct firedtv *fdtv);
--
2.34.1