lkml.org 
[lkml]   [2017]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2] misc: Return error on error path
Date
If ibmasm_event_buffer_init() or ibmasm_heartbeat_init() fails,
then ibmasm_init_one() release all resources and return 0 on error path.

The patch adds corresponding error for fails.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
---
v2: change ibmasm_event_buffer_init() to return corresponding error and
check return values as Andy Shevchenko suggested.
---
drivers/misc/ibmasm/event.c | 2 +-
drivers/misc/ibmasm/module.c | 6 ++++--
2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/ibmasm/event.c b/drivers/misc/ibmasm/event.c
index 8e540f4..7e33025 100644
--- a/drivers/misc/ibmasm/event.c
+++ b/drivers/misc/ibmasm/event.c
@@ -155,7 +155,7 @@ int ibmasm_event_buffer_init(struct service_processor *sp)

buffer = kmalloc(sizeof(struct event_buffer), GFP_KERNEL);
if (!buffer)
- return 1;
+ return -ENOMEM;

buffer->next_index = 0;
buffer->next_serial_number = 1;
diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c
index c5a456b..e914b8c 100644
--- a/drivers/misc/ibmasm/module.c
+++ b/drivers/misc/ibmasm/module.c
@@ -94,12 +94,14 @@ static int ibmasm_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
snprintf(sp->dirname, IBMASM_NAME_SIZE, "%d", sp->number);
snprintf(sp->devname, IBMASM_NAME_SIZE, "%s%d", DRIVER_NAME, sp->number);

- if (ibmasm_event_buffer_init(sp)) {
+ result = ibmasm_event_buffer_init(sp);
+ if (result) {
dev_err(sp->dev, "Failed to allocate event buffer\n");
goto error_eventbuffer;
}

- if (ibmasm_heartbeat_init(sp)) {
+ result = ibmasm_heartbeat_init(sp);
+ if (result) {
dev_err(sp->dev, "Failed to allocate heartbeat command\n");
goto error_heartbeat;
}
--
2.7.4
\
 
 \ /
  Last update: 2017-08-01 15:26    [W:0.033 / U:8.812 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site