[PATCHv4.1 01/13] USB: gadget: g_mass_storage: static data instead of dynamic allocation
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From: Michal Nazarewicz on 14 Jun 2010 04:50 This patch changes msg_do_config() function so that it uses a static object for a fsg_common structure instead of dynamically allocated. This is a micro-optimisation. Signed-off-by: Michal Nazarewicz <m.nazarewicz(a)samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park(a)samsung.com> --- Compared to previous patch fixed retp needlessly having static instead of automatic storage. drivers/usb/gadget/mass_storage.c | 15 +++++++++------ 1 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/mass_storage.c b/drivers/usb/gadget/mass_storage.c index 705cc1f..e68c00e 100644 --- a/drivers/usb/gadget/mass_storage.c +++ b/drivers/usb/gadget/mass_storage.c @@ -143,7 +143,9 @@ static int msg_thread_exits(struct fsg_common *common) static int __init msg_do_config(struct usb_configuration *c) { - struct fsg_common *common; + static struct fsg_common common; + + struct fsg_common *retp; struct fsg_config config; int ret; @@ -154,12 +156,13 @@ static int __init msg_do_config(struct usb_configuration *c) fsg_config_from_params(&config, &mod_data); config.thread_exits = msg_thread_exits; - common = fsg_common_init(0, c->cdev, &config); - if (IS_ERR(common)) - return PTR_ERR(common); - ret = fsg_add(c->cdev, c, common); - fsg_common_put(common); + retp = fsg_common_init(&common, c->cdev, &config); + if (IS_ERR(retp)) + return PTR_ERR(retp); + + ret = fsg_add(c->cdev, c, &common); + fsg_common_put(&common); return ret; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |