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authorGustavo A. R. Silva <gustavoars@kernel.org>2020-05-28 16:35:11 +0200
committerGustavo A. R. Silva <gustavoars@kernel.org>2020-06-16 06:08:30 +0200
commit466f966b1f4545acad150331911784d3f49ab1c3 (patch)
treeb26934de503fd3c09ee652ac01f2c7272dd07dcd
parentARM: tegra: Replace zero-length array with flexible-array (diff)
downloadlinux-466f966b1f4545acad150331911784d3f49ab1c3.tar.xz
linux-466f966b1f4545acad150331911784d3f49ab1c3.zip
dmaengine: Replace zero-length array with flexible-array
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>
-rw-r--r--drivers/dma/milbeaut-hdmac.c2
-rw-r--r--drivers/dma/milbeaut-xdmac.c2
-rw-r--r--drivers/dma/moxart-dma.c2
-rw-r--r--drivers/dma/ti/edma.c2
-rw-r--r--drivers/dma/ti/k3-udma.c2
-rw-r--r--drivers/dma/timb_dma.c2
-rw-r--r--include/linux/dmaengine.h4
7 files changed, 8 insertions, 8 deletions
diff --git a/drivers/dma/milbeaut-hdmac.c b/drivers/dma/milbeaut-hdmac.c
index 8853d442430b..a8cfb59f6efe 100644
--- a/drivers/dma/milbeaut-hdmac.c
+++ b/drivers/dma/milbeaut-hdmac.c
@@ -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 *
diff --git a/drivers/dma/milbeaut-xdmac.c b/drivers/dma/milbeaut-xdmac.c
index ab3d2f395378..85a597228fb0 100644
--- a/drivers/dma/milbeaut-xdmac.c
+++ b/drivers/dma/milbeaut-xdmac.c
@@ -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 *
diff --git a/drivers/dma/moxart-dma.c b/drivers/dma/moxart-dma.c
index 4ab493d46375..347146a6e1d0 100644
--- a/drivers/dma/moxart-dma.c
+++ b/drivers/dma/moxart-dma.c
@@ -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 {
diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index c4a5c170c1f9..35d81bd857f1 100644
--- a/drivers/dma/ti/edma.c
+++ b/drivers/dma/ti/edma.c
@@ -211,7 +211,7 @@ struct edma_desc {
u32 residue;
u32 residue_stat;
- struct edma_pset pset[0];
+ struct edma_pset pset[];
};
struct edma_cc;
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 945b7c604f91..c91e2dc1bb72 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -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 {
diff --git a/drivers/dma/timb_dma.c b/drivers/dma/timb_dma.c
index 39382694fdfc..68e48bf54d78 100644
--- a/drivers/dma/timb_dma.c
+++ b/drivers/dma/timb_dma.c
@@ -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)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index e1c03339918f..6283917edd90 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -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;