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dmaengine: ti: k3-udma: Use struct_size() in kzalloc() 

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83
Link: https://lore.kernel.org/r/20200619224334.GA7857@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2020-06-19 17:43:34 -05:00 committed by Vinod Koul
parent db375dcb12
commit ace52a8c2d
1 changed files with 2 additions and 2 deletions
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4
drivers/dma/ti/k3-udma.c
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@ -2171,7 +2171,7 @@ udma_prep_slave_sg_pkt(struct udma_chan *uc, struct scatterlist *sgl,
u32 ring_id;
unsigned int i;
d = kzalloc(sizeof(*d) + sglen * sizeof(d->hwdesc[0]), GFP_NOWAIT);
d = kzalloc(struct_size(d, hwdesc, sglen), GFP_NOWAIT);
if (!d)
return NULL;
@ -2487,7 +2487,7 @@ udma_prep_dma_cyclic_pkt(struct udma_chan *uc, dma_addr_t buf_addr,
if (period_len >= SZ_4M)
return NULL;
d = kzalloc(sizeof(*d) + periods * sizeof(d->hwdesc[0]), GFP_NOWAIT);
d = kzalloc(struct_size(d, hwdesc, periods), GFP_NOWAIT);
if (!d)
return NULL;