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Date: Wed, 18 Nov 2009 20:01:34 +0100 (CET)
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: linux-media@...r.kernel.org
cc: linux1394-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] 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@...6.in-berlin.de>
---
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(-)
Index: linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-1394.c
===================================================================
--- linux-2.6.32-rc7.orig/drivers/media/dvb/firewire/firedtv-1394.c
+++ linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-1394.c
@@ -101,9 +101,9 @@ static int node_lock(struct firedtv *fdt
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)
Index: linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-avc.c
===================================================================
--- linux-2.6.32-rc7.orig/drivers/media/dvb/firewire/firedtv-avc.c
+++ linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-avc.c
@@ -1236,14 +1236,14 @@ int avc_ca_get_mmi(struct firedtv *fdtv,
#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 f
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 fire
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:
Index: linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-fw.c
===================================================================
--- linux-2.6.32-rc7.orig/drivers/media/dvb/firewire/firedtv-fw.c
+++ linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv-fw.c
@@ -46,10 +46,9 @@ static int node_lock(struct firedtv *fdt
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)
Index: linux-2.6.32-rc7/drivers/media/dvb/firewire/firedtv.h
===================================================================
--- linux-2.6.32-rc7.orig/drivers/media/dvb/firewire/firedtv.h
+++ linux-2.6.32-rc7/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);
--
Stefan Richter
-=====-==--= =-== =--=-
http://arcgraph.de/sr/
--
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