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Subject[PATCH 05/18] staging: gasket: sysfs mapping creation fixups
Date
From: Todd Poynor <toddpoynor@google.com>

Return EBUSY for attempt to create a mapping already in use.

Remove stale pointers on error allocating attr array.

Signed-off-by: Zhongze Hu <frankhu@chromium.org>
Signed-off-by: Todd Poynor <toddpoynor@google.com>
---
drivers/staging/gasket/gasket_sysfs.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_sysfs.c b/drivers/staging/gasket/gasket_sysfs.c
index a3705d6e088a..d1856a09b894 100644
--- a/drivers/staging/gasket/gasket_sysfs.c
+++ b/drivers/staging/gasket/gasket_sysfs.c
@@ -213,7 +213,7 @@ int gasket_sysfs_create_mapping(
"0x%p.", device);
put_mapping(mapping);
mutex_unlock(&function_mutex);
- return -EINVAL;
+ return -EBUSY;
}

/* Find the first empty entry in the array. */
@@ -244,6 +244,8 @@ int gasket_sysfs_create_mapping(
mapping->attribute_count = 0;
if (!mapping->attributes) {
gasket_nodev_error("Unable to allocate sysfs attribute array.");
+ mapping->device = NULL;
+ mapping->gasket_dev = NULL;
mutex_unlock(&mapping->mutex);
mutex_unlock(&function_mutex);
return -ENOMEM;
--
2.18.0.203.gfac676dfb9-goog
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