From: Jean Delvare Date: Mon, 27 Mar 2006 09:17:26 +0000 (-0800) Subject: [PATCH] matrox maven: memory allocation and other cleanups X-Git-Tag: v2.6.17-rc1~332 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d03c21ec0be7787ff6b75dcf56c0e96209ccbfbd;p=linux-2.6 [PATCH] matrox maven: memory allocation and other cleanups 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 Acked-by: Petr Vandrovec Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c index 531a0c3b6e..d8b3429cbe 100644 --- a/drivers/video/matrox/matroxfb_maven.c +++ b/drivers/video/matrox/matroxfb_maven.c @@ -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; }