From: Krzysztof Opasiak Date: Mon, 20 Jul 2015 18:15:17 +0000 (+0200) Subject: usb: gadget: mass_storage: Free buffers if create lun fails X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=903588a99c26ed6f103eaa0cfa4ccbe9cd779398;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git usb: gadget: mass_storage: Free buffers if create lun fails Creation of LUN 0 may fail (for example due to ENOMEM). As fsg_common_set_num_buffers() does some memory allocation we should free it before it becomes unavailable. Signed-off-by: Krzysztof Opasiak Acked-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/gadget/function/f_mass_storage.c b/drivers/usb/gadget/function/f_mass_storage.c index f936268d26c6..f72102adc7ef 100644 --- a/drivers/usb/gadget/function/f_mass_storage.c +++ b/drivers/usb/gadget/function/f_mass_storage.c @@ -3524,6 +3524,9 @@ static struct usb_function_instance *fsg_alloc_inst(void) config.removable = true; rc = fsg_common_create_lun(opts->common, &config, 0, "lun.0", (const char **)&opts->func_inst.group.cg_item.ci_name); + if (rc) + goto release_buffers; + opts->lun0.lun = opts->common->luns[0]; opts->lun0.lun_id = 0; config_group_init_type_name(&opts->lun0.group, "lun.0", &fsg_lun_type); @@ -3534,6 +3537,8 @@ static struct usb_function_instance *fsg_alloc_inst(void) return &opts->func_inst; +release_buffers: + fsg_common_free_buffers(opts->common); release_luns: kfree(opts->common->luns); release_opts: