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crypto: cesa - allocate engines with main struct

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Use a flexible array member to combine and simplify allocation.

Move struct mv_cesa_dev down as flexible array members require full
definitions.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Rosen Penev 2026-04-24 19:32:47 -07:00 committed by Herbert Xu
parent bd11fb14de
commit 6ef4cd5b0c
2 changed files with 25 additions and 28 deletions
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11
drivers/crypto/marvell/cesa/cesa.c
View File

@ -416,7 +416,7 @@ static int mv_cesa_probe(struct platform_device *pdev)
const struct mbus_dram_target_info *dram;
struct device *dev = &pdev->dev;
struct mv_cesa_dev *cesa;
struct mv_cesa_engine *engines;
struct mv_cesa_engine *engine;
int irq, ret, i, cpu;
u32 sram_size;
@ -431,7 +431,8 @@ static int mv_cesa_probe(struct platform_device *pdev)
return -ENOTSUPP;
}
cesa = devm_kzalloc(dev, sizeof(*cesa), GFP_KERNEL);
cesa = devm_kzalloc(dev, struct_size(cesa, engines, caps->nengines),
GFP_KERNEL);
if (!cesa)
return -ENOMEM;
@ -445,10 +446,6 @@ static int mv_cesa_probe(struct platform_device *pdev)
sram_size = CESA_SA_MIN_SRAM_SIZE;
cesa->sram_size = sram_size;
cesa->engines = devm_kcalloc(dev, caps->nengines, sizeof(*engines),
GFP_KERNEL);
if (!cesa->engines)
return -ENOMEM;
spin_lock_init(&cesa->lock);
@ -465,7 +462,7 @@ static int mv_cesa_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, cesa);
for (i = 0; i < caps->nengines; i++) {
struct mv_cesa_engine *engine = &cesa->engines[i];
engine = &cesa->engines[i];
char res_name[16];
engine->id = i;

42
drivers/crypto/marvell/cesa/cesa.h
View File

@ -402,27 +402,6 @@ struct mv_cesa_dev_dma {
struct dma_pool *padding_pool;
};
/**
* struct mv_cesa_dev - CESA device
* @caps: device capabilities
* @regs: device registers
* @sram_size: usable SRAM size
* @lock: device lock
* @engines: array of engines
* @dma: dma pools
*
* Structure storing CESA device information.
*/
struct mv_cesa_dev {
const struct mv_cesa_caps *caps;
void __iomem *regs;
struct device *dev;
unsigned int sram_size;
spinlock_t lock;
struct mv_cesa_engine *engines;
struct mv_cesa_dev_dma *dma;
};
/**
* struct mv_cesa_engine - CESA engine
* @id: engine id
@ -471,6 +450,27 @@ struct mv_cesa_engine {
int irq;
};
/**
* struct mv_cesa_dev - CESA device
* @caps: device capabilities
* @regs: device registers
* @sram_size: usable SRAM size
* @lock: device lock
* @dma: dma pools
* @engines: array of engines
*
* Structure storing CESA device information.
*/
struct mv_cesa_dev {
const struct mv_cesa_caps *caps;
void __iomem *regs;
struct device *dev;
unsigned int sram_size;
spinlock_t lock;
struct mv_cesa_dev_dma *dma;
struct mv_cesa_engine engines[];
};
/**
* struct mv_cesa_req_ops - CESA request operations
* @process: process a request chunk result (should return 0 if the