korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-02 08:34:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

[PATCH] matrox maven: memory allocation and other cleanups

Browse Source 
A few cleanups which were done to almost all i2c drivers some times
ago, but matroxfb_maven was forgotten:

* Don't allocate two different structures at once.
* Use kzalloc instead of kmalloc+memset.
* Use strlcpy instead of strcpy.
* Drop duplicate error message on client deregistration failure.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jean Delvare 2006-03-27 01:17:26 -08:00 committed by Linus Torvalds
parent 756e21a022
commit d03c21ec0b
1 changed files with 25 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
drivers/video/matrox/matroxfb_maven.c
View File

@ -129,7 +129,7 @@ static int get_ctrl_id(__u32 v4l2_id) {
struct maven_data {
struct matrox_fb_info* primary_head;
struct i2c_client* client;
struct i2c_client client;
int version;
};
@ -970,7 +970,7 @@ static inline int maven_compute_timming(struct maven_data* md,
static int maven_program_timming(struct maven_data* md,
const struct mavenregs* m) {
struct i2c_client* c = md->client;
struct i2c_client* c = &md->client;
if (m->mode == MATROXFB_OUTPUT_MODE_MONITOR) {
LR(0x80);
@ -1007,7 +1007,7 @@ static int maven_program_timming(struct maven_data* md,
}
static inline int maven_resync(struct maven_data* md) {
struct i2c_client* c = md->client;
struct i2c_client* c = &md->client;
maven_set_reg(c, 0x95, 0x20); /* start whole thing */
return 0;
}
@ -1065,48 +1065,48 @@ static int maven_set_control (struct maven_data* md,
maven_compute_bwlevel(md, &blacklevel, &whitelevel);
blacklevel = (blacklevel >> 2) | ((blacklevel & 3) << 8);
whitelevel = (whitelevel >> 2) | ((whitelevel & 3) << 8);
maven_set_reg_pair(md->client, 0x0e, blacklevel);
maven_set_reg_pair(md->client, 0x1e, whitelevel);
maven_set_reg_pair(&md->client, 0x0e, blacklevel);
maven_set_reg_pair(&md->client, 0x1e, whitelevel);
}
break;
case V4L2_CID_SATURATION:
{
maven_set_reg(md->client, 0x20, p->value);
maven_set_reg(md->client, 0x22, p->value);
maven_set_reg(&md->client, 0x20, p->value);
maven_set_reg(&md->client, 0x22, p->value);
}
break;
case V4L2_CID_HUE:
{
maven_set_reg(md->client, 0x25, p->value);
maven_set_reg(&md->client, 0x25, p->value);
}
break;
case V4L2_CID_GAMMA:
{
const struct maven_gamma* g;
g = maven_compute_gamma(md);
maven_set_reg(md->client, 0x83, g->reg83);
maven_set_reg(md->client, 0x84, g->reg84);
maven_set_reg(md->client, 0x85, g->reg85);
maven_set_reg(md->client, 0x86, g->reg86);
maven_set_reg(md->client, 0x87, g->reg87);
maven_set_reg(md->client, 0x88, g->reg88);
maven_set_reg(md->client, 0x89, g->reg89);
maven_set_reg(md->client, 0x8a, g->reg8a);
maven_set_reg(md->client, 0x8b, g->reg8b);
maven_set_reg(&md->client, 0x83, g->reg83);
maven_set_reg(&md->client, 0x84, g->reg84);
maven_set_reg(&md->client, 0x85, g->reg85);
maven_set_reg(&md->client, 0x86, g->reg86);
maven_set_reg(&md->client, 0x87, g->reg87);
maven_set_reg(&md->client, 0x88, g->reg88);
maven_set_reg(&md->client, 0x89, g->reg89);
maven_set_reg(&md->client, 0x8a, g->reg8a);
maven_set_reg(&md->client, 0x8b, g->reg8b);
}
break;
case MATROXFB_CID_TESTOUT:
{
unsigned char val
= maven_get_reg (md->client,0x8d);
= maven_get_reg(&md->client,0x8d);
if (p->value) val |= 0x10;
else val &= ~0x10;
maven_set_reg (md->client, 0x8d, val);
maven_set_reg(&md->client, 0x8d, val);
}
break;
case MATROXFB_CID_DEFLICKER:
{
maven_set_reg(md->client, 0x93, maven_compute_deflicker(md));
maven_set_reg(&md->client, 0x93, maven_compute_deflicker(md));
}
break;
}
@ -1185,7 +1185,6 @@ static int maven_init_client(struct i2c_client* clnt) {
MINFO_FROM(container_of(clnt->adapter, struct i2c_bit_adapter, adapter)->minfo);
md->primary_head = MINFO;
md->client = clnt;
down_write(&ACCESS_FBINFO(altout.lock));
ACCESS_FBINFO(outputs[1]).output = &maven_altout;
ACCESS_FBINFO(outputs[1]).src = ACCESS_FBINFO(outputs[1]).default_src;
@ -1243,19 +1242,17 @@ static int maven_detect_client(struct i2c_adapter* adapter, int address, int kin
I2C_FUNC_SMBUS_BYTE_DATA |
I2C_FUNC_PROTOCOL_MANGLING))
goto ERROR0;
if (!(new_client = (struct i2c_client*)kmalloc(sizeof(*new_client) + sizeof(*data),
GFP_KERNEL))) {
if (!(data = kzalloc(sizeof(*data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
memset(new_client, 0, sizeof(*new_client) + sizeof(*data));
data = (struct maven_data*)(new_client + 1);
new_client = &data->client;
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
new_client->driver = &maven_driver;
new_client->flags = 0;
strcpy(new_client->name, "maven client");
strlcpy(new_client->name, "maven", I2C_NAME_SIZE);
if ((err = i2c_attach_client(new_client)))
goto ERROR3;
err = maven_init_client(new_client);
@ -1279,12 +1276,10 @@ static int maven_attach_adapter(struct i2c_adapter* adapter) {
static int maven_detach_client(struct i2c_client* client) {
int err;
if ((err = i2c_detach_client(client))) {
printk(KERN_ERR "maven: Cannot deregister client\n");
if ((err = i2c_detach_client(client)))
return err;
}
maven_shutdown_client(client);
kfree(client);
kfree(i2c_get_clientdata(client));
return 0;
}