Fix compilation warning:
drivers/staging/olpc_dcon/olpc_dcon.c: In function âdcon_probeâ:
drivers/staging/olpc_dcon/olpc_dcon.c:704:21: warning: ignoring
return value of âdevice_create_fileâ, declared with attribute warn_unused_result
and add cleaning of created files when creation of one failed.
Signed-off-by: Marek Belisko <marek.belisko@xxxxxxxxxxxxxxx>
---
drivers/staging/olpc_dcon/olpc_dcon.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/olpc_dcon/olpc_dcon.c b/drivers/staging/olpc_dcon/olpc_dcon.c
index 56a283d..7221bb8 100644
--- a/drivers/staging/olpc_dcon/olpc_dcon.c
+++ b/drivers/staging/olpc_dcon/olpc_dcon.c
@@ -674,7 +674,7 @@ static int dcon_detect(struct i2c_client *client, struct i2c_board_info *info)
static int dcon_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
- int rc, i;
+ int rc, i, j;
if (num_registered_fb >= 1)
fbinfo = registered_fb[0];
@@ -700,8 +700,14 @@ static int dcon_probe(struct i2c_client *client, const struct i2c_device_id *id)
goto edev;
}
- for(i = 0; i < ARRAY_SIZE(dcon_device_files); i++)
- device_create_file(&dcon_device->dev, &dcon_device_files[i]);
+ for(i = 0; i < ARRAY_SIZE(dcon_device_files); i++) {
+ rc = device_create_file(&dcon_device->dev,
+ &dcon_device_files[i]);
+ if (rc) {
+ dev_err(&dcon_device->dev, "Cannot create sysfs file\n");
+ goto ecreate;
+ }
+ }
/* Add the backlight device for the DCON */
@@ -728,6 +734,9 @@ static int dcon_probe(struct i2c_client *client, const struct i2c_device_id *id)
return 0;
+ ecreate:
+ for (j = 0; j < i; j++)
+ device_remove_file(&dcon_device->dev, &dcon_device_files[j]);
edev:
platform_device_unregister(dcon_device);
dcon_device = NULL;
--
1.7.1
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