On Oct 31 2014 or thereabouts, Dan Carpenter wrote:
> Shift the allocation down a few lines to avoid a memory leak and also
> add a check for allocation failure.
>
> Fixes: 2f31c5252910 ('HID: Introduce hidpp, a module to handle Logitech hid++ devices')
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
>
Ouch, I am ashamed of not having spot that :/
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
Thanks Dan!
Benjamin
> diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
> index 361e97d..3cce995 100644
> --- a/drivers/hid/hid-logitech-hidpp.c
> +++ b/drivers/hid/hid-logitech-hidpp.c
> @@ -200,13 +200,15 @@ static int hidpp_send_fap_command_sync(struct hidpp_device *hidpp,
> u8 feat_index, u8 funcindex_clientid, u8 *params, int param_count,
> struct hidpp_report *response)
> {
> - struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
> - GFP_KERNEL);
> + struct hidpp_report *message;
> int ret;
>
> if (param_count > sizeof(message->fap.params))
> return -EINVAL;
>
> + message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
> + if (!message)
> + return -ENOMEM;
> message->report_id = REPORT_ID_HIDPP_LONG;
> message->fap.feature_index = feat_index;
> message->fap.funcindex_clientid = funcindex_clientid;
> @@ -221,8 +223,7 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
> u8 report_id, u8 sub_id, u8 reg_address, u8 *params, int param_count,
> struct hidpp_report *response)
> {
> - struct hidpp_report *message = kzalloc(sizeof(struct hidpp_report),
> - GFP_KERNEL);
> + struct hidpp_report *message;
> int ret;
>
> if ((report_id != REPORT_ID_HIDPP_SHORT) &&
> @@ -232,6 +233,9 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
> if (param_count > sizeof(message->rap.params))
> return -EINVAL;
>
> + message = kzalloc(sizeof(struct hidpp_report), GFP_KERNEL);
> + if (!message)
> + return -ENOMEM;
> message->report_id = report_id;
> message->rap.sub_id = sub_id;
> message->rap.reg_address = reg_address;
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