dmaengine/amba-pl08x: pass (*ptr) to sizeof() instead of (struct xyz)

As mentioned in Documentation/CodingStyle,

The preferred form for passing a size of a struct is the following:
   p = kmalloc(sizeof(*p), ...);

The alternative form where struct name is spelled out hurts readability and
introduces an opportunity for a bug when the pointer variable type is changed
but the corresponding sizeof that is passed to a memory allocator is not.

This patch replaces (struct xyz) with *ptr at several occurrences in driver.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 8e2056b..01c2f50 100644 (file)
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1293,7 +1293,7 @@ static int pl08x_prep_channel_resources(struct pl08x_dma_chan *plchan,
 static struct pl08x_txd *pl08x_get_txd(struct pl08x_dma_chan *plchan,
        unsigned long flags)
 {
-       struct pl08x_txd *txd = kzalloc(sizeof(struct pl08x_txd), GFP_NOWAIT);
+       struct pl08x_txd *txd = kzalloc(sizeof(*txd), GFP_NOWAIT);
 
        if (txd) {
                dma_async_tx_descriptor_init(&txd->tx, &plchan->chan);
@@ -1690,7 +1690,7 @@ static int pl08x_dma_init_virtual_channels(struct pl08x_driver_data *pl08x,
         * to cope with that situation.
         */
        for (i = 0; i < channels; i++) {
-               chan = kzalloc(sizeof(struct pl08x_dma_chan), GFP_KERNEL);
+               chan = kzalloc(sizeof(*chan), GFP_KERNEL);
                if (!chan) {
                        dev_err(&pl08x->adev->dev,
                                "%s no memory for channel\n", __func__);
@@ -1850,7 +1850,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
                return ret;
 
        /* Create the driver state holder */
-       pl08x = kzalloc(sizeof(struct pl08x_driver_data), GFP_KERNEL);
+       pl08x = kzalloc(sizeof(*pl08x), GFP_KERNEL);
        if (!pl08x) {
                ret = -ENOMEM;
                goto out_no_pl08x;
@@ -1929,7 +1929,7 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id)
        }
 
        /* Initialize physical channels */
-       pl08x->phy_chans = kmalloc((vd->channels * sizeof(struct pl08x_phy_chan)),
+       pl08x->phy_chans = kmalloc((vd->channels * sizeof(*pl08x->phy_chans)),
                        GFP_KERNEL);
        if (!pl08x->phy_chans) {
                dev_err(&adev->dev, "%s failed to allocate "