From: Jean Delvare Date: Sat, 26 Nov 2005 20:00:54 +0000 (+0100) Subject: [PATCH] i2c: Rework client usage count, 2 of 3 X-Git-Tag: v2.6.16-rc1~935^2~1^2~31 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cde7859bda0d1124392b44e50aa11df99707e1d9;p=linux-2.6 [PATCH] i2c: Rework client usage count, 2 of 3 Make I2C_CLIENT_ALLOW_USE the default for all i2c clients. It doesn't hurt if the usage count is actually never used for any given driver, and allows for nice code simplifications in i2c-core. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- diff --git a/arch/arm/mach-pxa/akita-ioexp.c b/arch/arm/mach-pxa/akita-ioexp.c index 440ebb3c3d..b6bff550c8 100644 --- a/arch/arm/mach-pxa/akita-ioexp.c +++ b/arch/arm/mach-pxa/akita-ioexp.c @@ -133,7 +133,6 @@ static struct i2c_driver max7310_i2c_driver = { static struct i2c_client max7310_template = { name: "akita-max7310", - flags: I2C_CLIENT_ALLOW_USE, driver: &max7310_i2c_driver, }; diff --git a/drivers/i2c/chips/rtc8564.c b/drivers/i2c/chips/rtc8564.c index e586f75dd0..07494d3943 100644 --- a/drivers/i2c/chips/rtc8564.c +++ b/drivers/i2c/chips/rtc8564.c @@ -155,7 +155,6 @@ static int rtc8564_attach(struct i2c_adapter *adap, int addr, int kind) strlcpy(new_client->name, "RTC8564", I2C_NAME_SIZE); i2c_set_clientdata(new_client, d); - new_client->flags = I2C_CLIENT_ALLOW_USE; new_client->addr = addr; new_client->adapter = adap; new_client->driver = &rtc8564_driver; diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 2f0bc95293..d16b4998c4 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -419,8 +419,7 @@ int i2c_attach_client(struct i2c_client *client) } } - if (client->flags & I2C_CLIENT_ALLOW_USE) - client->usage_count = 0; + client->usage_count = 0; client->dev.parent = &client->adapter->dev; client->dev.driver = &client->driver->driver; @@ -443,8 +442,7 @@ int i2c_detach_client(struct i2c_client *client) struct i2c_adapter *adapter = client->adapter; int res = 0; - if ((client->flags & I2C_CLIENT_ALLOW_USE) - && (client->usage_count > 0)) { + if (client->usage_count > 0) { dev_warn(&client->dev, "Client [%s] still busy, " "can't detach\n", client->name); return -EBUSY; @@ -499,12 +497,9 @@ int i2c_use_client(struct i2c_client *client) if (ret) return ret; - if (client->flags & I2C_CLIENT_ALLOW_USE) { - if (client->usage_count > 0) - goto busy; - else - client->usage_count++; - } + if (client->usage_count > 0) + goto busy; + client->usage_count++; return 0; busy: @@ -514,16 +509,13 @@ int i2c_use_client(struct i2c_client *client) int i2c_release_client(struct i2c_client *client) { - if(client->flags & I2C_CLIENT_ALLOW_USE) { - if(client->usage_count>0) - client->usage_count--; - else { - pr_debug("i2c-core: %s used one too many times\n", - __FUNCTION__); - return -EPERM; - } + if (!client->usage_count) { + pr_debug("i2c-core: %s used one too many times\n", + __FUNCTION__); + return -EPERM; } + client->usage_count--; i2c_dec_use_client(client); return 0; diff --git a/drivers/media/video/adv7170.c b/drivers/media/video/adv7170.c index c4f2265167..622b1619a7 100644 --- a/drivers/media/video/adv7170.c +++ b/drivers/media/video/adv7170.c @@ -420,7 +420,6 @@ adv7170_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_adv7170; - client->flags = I2C_CLIENT_ALLOW_USE; if ((client->addr == I2C_ADV7170 >> 1) || (client->addr == (I2C_ADV7170 >> 1) + 1)) { dname = adv7170_name; diff --git a/drivers/media/video/adv7175.c b/drivers/media/video/adv7175.c index 4fc08b17d4..d4859b4457 100644 --- a/drivers/media/video/adv7175.c +++ b/drivers/media/video/adv7175.c @@ -470,7 +470,6 @@ adv7175_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_adv7175; - client->flags = I2C_CLIENT_ALLOW_USE; if ((client->addr == I2C_ADV7175 >> 1) || (client->addr == (I2C_ADV7175 >> 1) + 1)) { dname = adv7175_name; diff --git a/drivers/media/video/bt819.c b/drivers/media/video/bt819.c index 7bba69793b..741e59af09 100644 --- a/drivers/media/video/bt819.c +++ b/drivers/media/video/bt819.c @@ -535,7 +535,6 @@ bt819_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_bt819; - client->flags = I2C_CLIENT_ALLOW_USE; decoder = kmalloc(sizeof(struct bt819), GFP_KERNEL); if (decoder == NULL) { diff --git a/drivers/media/video/bt832.c b/drivers/media/video/bt832.c index 0ba8652357..4ed13860b5 100644 --- a/drivers/media/video/bt832.c +++ b/drivers/media/video/bt832.c @@ -240,7 +240,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "bt832", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/bt856.c b/drivers/media/video/bt856.c index 4c9acd1e2c..d4bba8efac 100644 --- a/drivers/media/video/bt856.c +++ b/drivers/media/video/bt856.c @@ -323,7 +323,6 @@ bt856_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_bt856; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "bt856", sizeof(I2C_NAME(client))); encoder = kmalloc(sizeof(struct bt856), GFP_KERNEL); diff --git a/drivers/media/video/cs53l32a.c b/drivers/media/video/cs53l32a.c index fce5d89b7b..f442ce3ba7 100644 --- a/drivers/media/video/cs53l32a.c +++ b/drivers/media/video/cs53l32a.c @@ -154,7 +154,6 @@ static int cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind) client->addr = address; client->adapter = adapter; client->driver = &i2c_driver; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name) - 1, "cs53l32a"); cs53l32a_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name); diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index c66bc147ee..0b278abe87 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -773,7 +773,6 @@ static int cx25840_detect_client(struct i2c_adapter *adapter, int address, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_cx25840; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name) - 1, "cx25840"); cx25840_dbg("detecting cx25840 client on address 0x%x\n", address << 1); diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c index 7f5603054f..d14bcf4cea 100644 --- a/drivers/media/video/em28xx/em28xx-i2c.c +++ b/drivers/media/video/em28xx/em28xx-i2c.c @@ -497,7 +497,6 @@ static struct i2c_adapter em28xx_adap_template = { static struct i2c_client em28xx_client_template = { .name = "em28xx internal", - .flags = I2C_CLIENT_ALLOW_USE, }; /* ----------------------------------------------------------- */ diff --git a/drivers/media/video/msp3400.c b/drivers/media/video/msp3400.c index 46328fb6fe..c5e8ad3aac 100644 --- a/drivers/media/video/msp3400.c +++ b/drivers/media/video/msp3400.c @@ -1576,7 +1576,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "(unset)", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/saa6588.c b/drivers/media/video/saa6588.c index 18a0b7143e..3d4076ca67 100644 --- a/drivers/media/video/saa6588.c +++ b/drivers/media/video/saa6588.c @@ -505,7 +505,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "saa6588", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/saa7110.c b/drivers/media/video/saa7110.c index f266b35ceb..8affa63c8b 100644 --- a/drivers/media/video/saa7110.c +++ b/drivers/media/video/saa7110.c @@ -501,7 +501,6 @@ saa7110_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7110; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client))); decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL); diff --git a/drivers/media/video/saa7111.c b/drivers/media/video/saa7111.c index 687beaf11a..2b22045645 100644 --- a/drivers/media/video/saa7111.c +++ b/drivers/media/video/saa7111.c @@ -518,7 +518,6 @@ saa7111_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7111; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client))); decoder = kmalloc(sizeof(struct saa7111), GFP_KERNEL); diff --git a/drivers/media/video/saa7114.c b/drivers/media/video/saa7114.c index 4748cf0598..285f6c7a8f 100644 --- a/drivers/media/video/saa7114.c +++ b/drivers/media/video/saa7114.c @@ -859,7 +859,6 @@ saa7114_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7114; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "saa7114", sizeof(I2C_NAME(client))); decoder = kmalloc(sizeof(struct saa7114), GFP_KERNEL); diff --git a/drivers/media/video/saa7115.c b/drivers/media/video/saa7115.c index b1079de938..79aadd2d40 100644 --- a/drivers/media/video/saa7115.c +++ b/drivers/media/video/saa7115.c @@ -1270,7 +1270,6 @@ static int saa7115_attach(struct i2c_adapter *adapter, int address, int kind) client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7115; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name) - 1, "saa7115"); saa7115_dbg("detecting saa7115 client on address 0x%x\n", address << 1); diff --git a/drivers/media/video/saa711x.c b/drivers/media/video/saa711x.c index 734a709190..44bfc04770 100644 --- a/drivers/media/video/saa711x.c +++ b/drivers/media/video/saa711x.c @@ -494,7 +494,6 @@ saa711x_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa711x; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "saa711x", sizeof(I2C_NAME(client))); decoder = kmalloc(sizeof(struct saa711x), GFP_KERNEL); if (decoder == NULL) { diff --git a/drivers/media/video/saa7127.c b/drivers/media/video/saa7127.c index a2fab98375..1f4b415994 100644 --- a/drivers/media/video/saa7127.c +++ b/drivers/media/video/saa7127.c @@ -719,7 +719,6 @@ static int saa7127_attach(struct i2c_adapter *adapter, int address, int kind) client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7127; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name) - 1, "saa7127"); saa7127_dbg("detecting saa7127 client on address 0x%x\n", address << 1); diff --git a/drivers/media/video/saa7134/saa6752hs.c b/drivers/media/video/saa7134/saa6752hs.c index 6fc298e0a0..68206060c9 100644 --- a/drivers/media/video/saa7134/saa6752hs.c +++ b/drivers/media/video/saa7134/saa6752hs.c @@ -608,7 +608,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "saa6752hs", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/saa7185.c b/drivers/media/video/saa7185.c index e24aa16f2d..9f37585d3f 100644 --- a/drivers/media/video/saa7185.c +++ b/drivers/media/video/saa7185.c @@ -415,7 +415,6 @@ saa7185_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_saa7185; - client->flags = I2C_CLIENT_ALLOW_USE; strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client))); encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL); diff --git a/drivers/media/video/tda9887.c b/drivers/media/video/tda9887.c index 049b44e076..324f61bf71 100644 --- a/drivers/media/video/tda9887.c +++ b/drivers/media/video/tda9887.c @@ -833,7 +833,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "tda9887", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c index 3c75121f63..6328f0954e 100644 --- a/drivers/media/video/tuner-core.c +++ b/drivers/media/video/tuner-core.c @@ -755,7 +755,6 @@ static struct i2c_driver driver = { }; static struct i2c_client client_template = { .name = "(tuner unset)", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/tvaudio.c b/drivers/media/video/tvaudio.c index 3565f35be7..4f1f339283 100644 --- a/drivers/media/video/tvaudio.c +++ b/drivers/media/video/tvaudio.c @@ -1713,7 +1713,6 @@ static struct i2c_driver driver = { static struct i2c_client client_template = { .name = "(unset)", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/tveeprom.c b/drivers/media/video/tveeprom.c index 195bc51d45..d833b65107 100644 --- a/drivers/media/video/tveeprom.c +++ b/drivers/media/video/tveeprom.c @@ -751,7 +751,6 @@ tveeprom_detect_client(struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &i2c_driver_tveeprom; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name), "tveeprom"); i2c_attach_client(client); diff --git a/drivers/media/video/tvp5150.c b/drivers/media/video/tvp5150.c index 4f3ee20916..3734554fc7 100644 --- a/drivers/media/video/tvp5150.c +++ b/drivers/media/video/tvp5150.c @@ -714,7 +714,6 @@ static struct i2c_driver driver; static struct i2c_client client_template = { .name = "(unset)", - .flags = I2C_CLIENT_ALLOW_USE, .driver = &driver, }; diff --git a/drivers/media/video/vpx3220.c b/drivers/media/video/vpx3220.c index c66d28505b..54bc888c38 100644 --- a/drivers/media/video/vpx3220.c +++ b/drivers/media/video/vpx3220.c @@ -631,7 +631,6 @@ vpx3220_detect_client (struct i2c_adapter *adapter, client->addr = address; client->adapter = adapter; client->driver = &vpx3220_i2c_driver; - client->flags = I2C_CLIENT_ALLOW_USE; /* Check for manufacture ID and part number */ if (kind < 0) { diff --git a/drivers/media/video/wm8775.c b/drivers/media/video/wm8775.c index 7b07717a3c..527c259174 100644 --- a/drivers/media/video/wm8775.c +++ b/drivers/media/video/wm8775.c @@ -168,7 +168,6 @@ static int wm8775_attach(struct i2c_adapter *adapter, int address, int kind) client->addr = address; client->adapter = adapter; client->driver = &i2c_driver; - client->flags = I2C_CLIENT_ALLOW_USE; snprintf(client->name, sizeof(client->name) - 1, "wm8775"); wm8775_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 4487c51897..8b4d4695de 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -250,7 +250,6 @@ static inline void i2c_set_adapdata (struct i2c_adapter *dev, void *data) } /*flags for the client struct: */ -#define I2C_CLIENT_ALLOW_USE 0x01 /* Client allows access */ #define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ /* Must equal I2C_M_TEN below */