[PATCH 4.14 145/218] USB: storage: karma: fix rio_karma_init return

Greg Kroah-Hartman
2022-06-13T11:01:20Z

From: Lin Ma <linma@zju.edu.cn>

[ Upstream commit b92ffb1eddd9a66a90defc556dcbf65a43c196c7 ]

The function rio_karam_init() should return -ENOMEM instead of
value 0 (USB_STOR_TRANSPORT_GOOD) when allocation fails.

Similarly, it should return -EIO when rio_karma_send_command() fails.

Fixes: dfe0d3ba20e8 ("USB Storage: add rio karma eject support")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Link: https://lore.kernel.org/r/20220412144359.28447-1-linma@zju.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/storage/karma.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/storage/karma.c b/drivers/usb/storage/karma.c
index b05ba4929f00..89a273e9439f 100644
--- a/drivers/usb/storage/karma.c
+++ b/drivers/usb/storage/karma.c
@@ -185,23 +185,24 @@ static void rio_karma_destructor(void *extra)

static int rio_karma_init(struct us_data *us)
{
- int ret = 0;
struct karma_data *data = kzalloc(sizeof(struct karma_data), GFP_NOIO);
if (!data)
- goto out;
+ return -ENOMEM;

data->recv = kmalloc(RIO_RECV_LEN, GFP_NOIO);
if (!data->recv) {
kfree(data);
- goto out;
+ return -ENOMEM;
}

us->extra = data;
us->extra_destructor = rio_karma_destructor;
- ret = rio_karma_send_command(RIO_ENTER_STORAGE, us);
- data->in_storage = (ret == 0);
-out:
- return ret;
+ if (rio_karma_send_command(RIO_ENTER_STORAGE, us))
+ return -EIO;
+
+ data->in_storage = 1;
+
+ return 0;
}

static struct scsi_host_template karma_host_template;
--
2.35.1