From: Mark M. Hoffman <mhoffman at lightlink.com>
Content-Disposition: inline; filename=i2c-algo-error-handling-fix.patch
It is possible for i2c_add_adapter() to fail. Several I2C algorithm
drivers ignore that fact. This (compile-tested only) patch fixes them.
Signed-off-by: Mark M. Hoffman <mhoffman at lightlink.com>
Signed-off-by: Jean Delvare <khali at linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
drivers/i2c/algos/i2c-algo-bit.c | 3 +--
drivers/i2c/algos/i2c-algo-ite.c | 4 +---
drivers/i2c/algos/i2c-algo-pca.c | 6 +++---
drivers/i2c/algos/i2c-algo-pcf.c | 8 +++++---
drivers/i2c/algos/i2c-algo-sibyte.c | 4 +---
5 files changed, 11 insertions(+), 14 deletions(-)
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index df05df1..3d6fc82 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -544,8 +544,7 @@ int i2c_bit_add_bus(struct i2c_adapter *
adap->timeout = 100; /* default values, should */
adap->retries = 3; /* be replaced by defines */
- i2c_add_adapter(adap);
- return 0;
+ return i2c_add_adapter(adap);
}
diff --git a/drivers/i2c/algos/i2c-algo-ite.c b/drivers/i2c/algos/i2c-algo-ite.c
index 2db7bfc..70d8eef 100644
--- a/drivers/i2c/algos/i2c-algo-ite.c
+++ b/drivers/i2c/algos/i2c-algo-ite.c
@@ -742,10 +742,8 @@ int i2c_iic_add_bus(struct i2c_adapter *
adap->retries = 3; /* be replaced by defines */
adap->flags = 0;
- i2c_add_adapter(adap);
iic_init(iic_adap);
-
- return 0;
+ return i2c_add_adapter(adap);
}
diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c
index 82946ac..b88a6fc 100644
--- a/drivers/i2c/algos/i2c-algo-pca.c
+++ b/drivers/i2c/algos/i2c-algo-pca.c
@@ -374,10 +374,10 @@ int i2c_pca_add_bus(struct i2c_adapter *
adap->timeout = 100; /* default values, should */
adap->retries = 3; /* be replaced by defines */
- rval = pca_init(pca_adap);
+ if ((rval = pca_init(pca_adap)))
+ return rval;
- if (!rval)
- i2c_add_adapter(adap);
+ rval = i2c_add_adapter(adap);
return rval;
}
diff --git a/drivers/i2c/algos/i2c-algo-pcf.c b/drivers/i2c/algos/i2c-algo-pcf.c
index 6e498df..5b24930 100644
--- a/drivers/i2c/algos/i2c-algo-pcf.c
+++ b/drivers/i2c/algos/i2c-algo-pcf.c
@@ -479,9 +479,11 @@ int i2c_pcf_add_bus(struct i2c_adapter *
adap->timeout = 100; /* default values, should */
adap->retries = 3; /* be replaced by defines */
- rval = pcf_init_8584(pcf_adap);
- if (!rval)
- i2c_add_adapter(adap);
+ if ((rval = pcf_init_8584(pcf_adap)))
+ return rval;
+
+ rval = i2c_add_adapter(adap);
+
return rval;
}
diff --git a/drivers/i2c/algos/i2c-algo-sibyte.c b/drivers/i2c/algos/i2c-algo-sibyte.c
index 3df3f09..32d41c6 100644
--- a/drivers/i2c/algos/i2c-algo-sibyte.c
+++ b/drivers/i2c/algos/i2c-algo-sibyte.c
@@ -173,9 +173,7 @@ int i2c_sibyte_add_bus(struct i2c_adapte
printk("\n");
}
- i2c_add_adapter(i2c_adap);
-
- return 0;
+ return i2c_add_adapter(i2c_adap);
}
--
1.4.1
