3.18-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 939ffb1712890ee22146d2dfc24adbc7da6afa84 ]
Let's initialize atomic_t variables keeping track of number of various devices created so far with -1 in order to avoid extra subtraction operation.
Signed-off-by: Aniroop Mathur aniroop.mathur@gmail.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/gameport/gameport.c | 4 ++-- drivers/input/joystick/xpad.c | 8 ++++---- drivers/input/misc/ims-pcu.c | 4 ++-- drivers/input/serio/serio.c | 4 ++-- drivers/input/serio/serio_raw.c | 4 ++-- 5 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c index e29c04e2aff4..e853a2134680 100644 --- a/drivers/input/gameport/gameport.c +++ b/drivers/input/gameport/gameport.c @@ -527,14 +527,14 @@ EXPORT_SYMBOL(gameport_set_phys); */ static void gameport_init_port(struct gameport *gameport) { - static atomic_t gameport_no = ATOMIC_INIT(0); + static atomic_t gameport_no = ATOMIC_INIT(-1);
__module_get(THIS_MODULE);
mutex_init(&gameport->drv_mutex); device_initialize(&gameport->dev); dev_set_name(&gameport->dev, "gameport%lu", - (unsigned long)atomic_inc_return(&gameport_no) - 1); + (unsigned long)atomic_inc_return(&gameport_no)); gameport->dev.bus = &gameport_bus; gameport->dev.release = gameport_release_port; if (gameport->parent) diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c index 1a728f310b27..9843c8cca2f7 100644 --- a/drivers/input/joystick/xpad.c +++ b/drivers/input/joystick/xpad.c @@ -888,8 +888,8 @@ static void xpad_led_set(struct led_classdev *led_cdev,
static int xpad_led_probe(struct usb_xpad *xpad) { - static atomic_t led_seq = ATOMIC_INIT(0); - long led_no; + static atomic_t led_seq = ATOMIC_INIT(-1); + unsigned long led_no; struct xpad_led *led; struct led_classdev *led_cdev; int error; @@ -901,9 +901,9 @@ static int xpad_led_probe(struct usb_xpad *xpad) if (!led) return -ENOMEM;
- led_no = (long)atomic_inc_return(&led_seq) - 1; + led_no = atomic_inc_return(&led_seq);
- snprintf(led->name, sizeof(led->name), "xpad%ld", led_no); + snprintf(led->name, sizeof(led->name), "xpad%lu", led_no); led->xpad = xpad;
led_cdev = &led->led_cdev; diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c index 063898d429c7..b5304e264881 100644 --- a/drivers/input/misc/ims-pcu.c +++ b/drivers/input/misc/ims-pcu.c @@ -1871,7 +1871,7 @@ static int ims_pcu_identify_type(struct ims_pcu *pcu, u8 *device_id)
static int ims_pcu_init_application_mode(struct ims_pcu *pcu) { - static atomic_t device_no = ATOMIC_INIT(0); + static atomic_t device_no = ATOMIC_INIT(-1);
const struct ims_pcu_device_info *info; int error; @@ -1902,7 +1902,7 @@ static int ims_pcu_init_application_mode(struct ims_pcu *pcu) }
/* Device appears to be operable, complete initialization */ - pcu->device_no = atomic_inc_return(&device_no) - 1; + pcu->device_no = atomic_inc_return(&device_no);
/* * PCU-B devices, both GEN_1 and GEN_2 do not have OFN sensor diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index d399b8b0f000..a05a5179da32 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -514,7 +514,7 @@ static void serio_release_port(struct device *dev) */ static void serio_init_port(struct serio *serio) { - static atomic_t serio_no = ATOMIC_INIT(0); + static atomic_t serio_no = ATOMIC_INIT(-1);
__module_get(THIS_MODULE);
@@ -525,7 +525,7 @@ static void serio_init_port(struct serio *serio) mutex_init(&serio->drv_mutex); device_initialize(&serio->dev); dev_set_name(&serio->dev, "serio%lu", - (unsigned long)atomic_inc_return(&serio_no) - 1); + (unsigned long)atomic_inc_return(&serio_no)); serio->dev.bus = &serio_bus; serio->dev.release = serio_release_port; serio->dev.groups = serio_device_attr_groups; diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c index c9a02fe57576..71ef5d65a0c6 100644 --- a/drivers/input/serio/serio_raw.c +++ b/drivers/input/serio/serio_raw.c @@ -292,7 +292,7 @@ static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data,
static int serio_raw_connect(struct serio *serio, struct serio_driver *drv) { - static atomic_t serio_raw_no = ATOMIC_INIT(0); + static atomic_t serio_raw_no = ATOMIC_INIT(-1); struct serio_raw *serio_raw; int err;
@@ -303,7 +303,7 @@ static int serio_raw_connect(struct serio *serio, struct serio_driver *drv) }
snprintf(serio_raw->name, sizeof(serio_raw->name), - "serio_raw%ld", (long)atomic_inc_return(&serio_raw_no) - 1); + "serio_raw%ld", (long)atomic_inc_return(&serio_raw_no)); kref_init(&serio_raw->kref); INIT_LIST_HEAD(&serio_raw->client_list); init_waitqueue_head(&serio_raw->wait);