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dmaengine: Replace zero-length array with flexible-array

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There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://github.com/KSPP/linux/issues/21

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2020-05-28 09:35:11 -05:00
parent 06f3a5a4cb
commit 466f966b1f
7 changed files with 8 additions and 8 deletions
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2
drivers/dma/milbeaut-hdmac.c
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@ -77,7 +77,7 @@ struct milbeaut_hdmac_device {
struct dma_device ddev;
struct clk *clk;
void __iomem *reg_base;
struct milbeaut_hdmac_chan channels[0];
struct milbeaut_hdmac_chan channels[];
};
static struct milbeaut_hdmac_chan *

2
drivers/dma/milbeaut-xdmac.c
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@ -74,7 +74,7 @@ struct milbeaut_xdmac_chan {
struct milbeaut_xdmac_device {
struct dma_device ddev;
void __iomem *reg_base;
struct milbeaut_xdmac_chan channels[0];
struct milbeaut_xdmac_chan channels[];
};
static struct milbeaut_xdmac_chan *

2
drivers/dma/moxart-dma.c
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@ -127,7 +127,7 @@ struct moxart_desc {
unsigned int dma_cycles;
struct virt_dma_desc vd;
uint8_t es;
struct moxart_sg sg[0];
struct moxart_sg sg[];
};
struct moxart_chan {

2
drivers/dma/ti/edma.c
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@ -211,7 +211,7 @@ struct edma_desc {
u32 residue;
u32 residue_stat;
struct edma_pset pset[0];
struct edma_pset pset[];
};
struct edma_cc;

2
drivers/dma/ti/k3-udma.c
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@ -170,7 +170,7 @@ struct udma_desc {
void *metadata; /* pointer to provided metadata buffer (EPIP, PSdata) */
unsigned int hwdesc_count;
struct udma_hwdesc hwdesc[0];
struct udma_hwdesc hwdesc[];
};
enum udma_chan_state {

2
drivers/dma/timb_dma.c
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@ -88,7 +88,7 @@ struct timb_dma {
struct dma_device dma;
void __iomem *membase;
struct tasklet_struct tasklet;
struct timb_dma_chan channels[0];
struct timb_dma_chan channels[];
};
static struct device *chan2dev(struct dma_chan *chan)

4
include/linux/dmaengine.h
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@ -153,7 +153,7 @@ struct dma_interleaved_template {
bool dst_sgl;
size_t numf;
size_t frame_size;
struct data_chunk sgl[0];
struct data_chunk sgl[];
};
/**
@ -535,7 +535,7 @@ struct dmaengine_unmap_data {
struct device *dev;
struct kref kref;
size_t len;
dma_addr_t addr[0];
dma_addr_t addr[];
};
struct dma_async_tx_descriptor;