[PATCH] I2C: Kill i2c_algorithm.id (2/7)

Use the adapter id rather than the algorithm id to detect the i2c-isa
pseudo-adapter. This saves one level of dereferencing, and the
algorithm ids will soon be gone anyway.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 4 insertions, 3 deletions

diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
index bbfd4449b921..dc666d7cf45a 100644
--- a/drivers/i2c/busses/i2c-isa.c
+++ b/drivers/i2c/busses/i2c-isa.c
@@ -50,6 +50,7 @@ static struct i2c_algorithm isa_algorithm = {
 /* There can only be one... */
 static struct i2c_adapter isa_adapter = {
         .owner          = THIS_MODULE,
+        .id             = I2C_ALGO_ISA | I2C_HW_ISA,
         .class          = I2C_CLASS_HWMON,
         .algo           = &isa_algorithm,
         .name           = "ISA main adapter",
diff --git a/include/linux/i2c-isa.h b/include/linux/i2c-isa.h
index db793b68356c..54c27e88d101 100644
--- a/include/linux/i2c-isa.h
+++ b/include/linux/i2c-isa.h
@@ -28,9 +28,9 @@ extern int i2c_isa_del_driver(struct i2c_driver *driver);
 
 /* Detect whether we are on the isa bus. This is only useful to hybrid
    (i2c+isa) drivers. */
-#define i2c_is_isa_client(clientptr) \
-        ((clientptr)->adapter->algo->id == I2C_ALGO_ISA)
 #define i2c_is_isa_adapter(adapptr) \
-        ((adapptr)->algo->id == I2C_ALGO_ISA)
+        ((adapptr)->id == (I2C_ALGO_ISA | I2C_HW_ISA))
+#define i2c_is_isa_client(clientptr) \
+        i2c_is_isa_adapter((clientptr)->adapter)
 
 #endif /* _LINUX_I2C_ISA_H */