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 <[email protected]> --- 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
