diff options
author | Kees Cook <keescook@chromium.org> | 2018-06-13 00:07:58 +0300 |
---|---|---|
committer | Kees Cook <keescook@chromium.org> | 2018-06-13 02:19:22 +0300 |
commit | a86854d0c599b3202307abceb68feee4d7061578 (patch) | |
tree | aee906e1a1a7cb999b3af9df64e0fb4d97a3fbfb /drivers/input/rmi4 | |
parent | 3c4211ba8ad883ec658b989f0c86d2d7f79a904b (diff) |
treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:
devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)
as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@
(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@
(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@
(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/input/rmi4')
-rw-r--r-- | drivers/input/rmi4/rmi_driver.c | 9 | ||||
-rw-r--r-- | drivers/input/rmi4/rmi_f11.c | 15 | ||||
-rw-r--r-- | drivers/input/rmi4/rmi_f12.c | 15 | ||||
-rw-r--r-- | drivers/input/rmi4/rmi_f54.c | 2 | ||||
-rw-r--r-- | drivers/input/rmi4/rmi_spi.c | 9 |
5 files changed, 27 insertions, 23 deletions
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c index f5954981e9ee..7d29053dfb0f 100644 --- a/drivers/input/rmi4/rmi_driver.c +++ b/drivers/input/rmi4/rmi_driver.c @@ -636,9 +636,10 @@ int rmi_read_register_desc(struct rmi_device *d, u16 addr, rdesc->num_registers = bitmap_weight(rdesc->presense_map, RMI_REG_DESC_PRESENSE_BITS); - rdesc->registers = devm_kzalloc(&d->dev, rdesc->num_registers * - sizeof(struct rmi_register_desc_item), - GFP_KERNEL); + rdesc->registers = devm_kcalloc(&d->dev, + rdesc->num_registers, + sizeof(struct rmi_register_desc_item), + GFP_KERNEL); if (!rdesc->registers) return -ENOMEM; @@ -1061,7 +1062,7 @@ int rmi_probe_interrupts(struct rmi_driver_data *data) data->num_of_irq_regs = (data->irq_count + 7) / 8; size = BITS_TO_LONGS(data->irq_count) * sizeof(unsigned long); - data->irq_memory = devm_kzalloc(dev, size * 4, GFP_KERNEL); + data->irq_memory = devm_kcalloc(dev, size, 4, GFP_KERNEL); if (!data->irq_memory) { dev_err(dev, "Failed to allocate memory for irq masks.\n"); return -ENOMEM; diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c index bc5e37f30ac1..12a233251793 100644 --- a/drivers/input/rmi4/rmi_f11.c +++ b/drivers/input/rmi4/rmi_f11.c @@ -1190,14 +1190,15 @@ static int rmi_f11_initialize(struct rmi_function *fn) f11->sensor.attn_size += f11->sensor.nbr_fingers * 2; /* allocate the in-kernel tracking buffers */ - sensor->tracking_pos = devm_kzalloc(&fn->dev, - sizeof(struct input_mt_pos) * sensor->nbr_fingers, + sensor->tracking_pos = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, sizeof(struct input_mt_pos), + GFP_KERNEL); + sensor->tracking_slots = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, sizeof(int), GFP_KERNEL); + sensor->objs = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, + sizeof(struct rmi_2d_sensor_abs_object), GFP_KERNEL); - sensor->tracking_slots = devm_kzalloc(&fn->dev, - sizeof(int) * sensor->nbr_fingers, GFP_KERNEL); - sensor->objs = devm_kzalloc(&fn->dev, - sizeof(struct rmi_2d_sensor_abs_object) - * sensor->nbr_fingers, GFP_KERNEL); if (!sensor->tracking_pos || !sensor->tracking_slots || !sensor->objs) return -ENOMEM; diff --git a/drivers/input/rmi4/rmi_f12.c b/drivers/input/rmi4/rmi_f12.c index 8b0db086d68a..a3d1aa88f2a9 100644 --- a/drivers/input/rmi4/rmi_f12.c +++ b/drivers/input/rmi4/rmi_f12.c @@ -502,14 +502,15 @@ static int rmi_f12_probe(struct rmi_function *fn) } /* allocate the in-kernel tracking buffers */ - sensor->tracking_pos = devm_kzalloc(&fn->dev, - sizeof(struct input_mt_pos) * sensor->nbr_fingers, + sensor->tracking_pos = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, sizeof(struct input_mt_pos), + GFP_KERNEL); + sensor->tracking_slots = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, sizeof(int), GFP_KERNEL); + sensor->objs = devm_kcalloc(&fn->dev, + sensor->nbr_fingers, + sizeof(struct rmi_2d_sensor_abs_object), GFP_KERNEL); - sensor->tracking_slots = devm_kzalloc(&fn->dev, - sizeof(int) * sensor->nbr_fingers, GFP_KERNEL); - sensor->objs = devm_kzalloc(&fn->dev, - sizeof(struct rmi_2d_sensor_abs_object) - * sensor->nbr_fingers, GFP_KERNEL); if (!sensor->tracking_pos || !sensor->tracking_slots || !sensor->objs) return -ENOMEM; diff --git a/drivers/input/rmi4/rmi_f54.c b/drivers/input/rmi4/rmi_f54.c index 5343f2c08f15..e8a59d164019 100644 --- a/drivers/input/rmi4/rmi_f54.c +++ b/drivers/input/rmi4/rmi_f54.c @@ -685,7 +685,7 @@ static int rmi_f54_probe(struct rmi_function *fn) rx = f54->num_rx_electrodes; tx = f54->num_tx_electrodes; f54->report_data = devm_kzalloc(&fn->dev, - sizeof(u16) * tx * rx, + array3_size(tx, rx, sizeof(u16)), GFP_KERNEL); if (f54->report_data == NULL) return -ENOMEM; diff --git a/drivers/input/rmi4/rmi_spi.c b/drivers/input/rmi4/rmi_spi.c index 082defc329a8..33b8c6e7ac0a 100644 --- a/drivers/input/rmi4/rmi_spi.c +++ b/drivers/input/rmi4/rmi_spi.c @@ -69,7 +69,7 @@ static int rmi_spi_manage_pools(struct rmi_spi_xport *rmi_spi, int len) buf_size = RMI_SPI_XFER_SIZE_LIMIT; tmp = rmi_spi->rx_buf; - buf = devm_kzalloc(&spi->dev, buf_size * 2, + buf = devm_kcalloc(&spi->dev, buf_size, 2, GFP_KERNEL | GFP_DMA); if (!buf) return -ENOMEM; @@ -96,9 +96,10 @@ static int rmi_spi_manage_pools(struct rmi_spi_xport *rmi_spi, int len) * per byte delays. */ tmp = rmi_spi->rx_xfers; - xfer_buf = devm_kzalloc(&spi->dev, - (rmi_spi->rx_xfer_count + rmi_spi->tx_xfer_count) - * sizeof(struct spi_transfer), GFP_KERNEL); + xfer_buf = devm_kcalloc(&spi->dev, + rmi_spi->rx_xfer_count + rmi_spi->tx_xfer_count, + sizeof(struct spi_transfer), + GFP_KERNEL); if (!xfer_buf) return -ENOMEM; |