diff options
| author | Rosen Penev <rosenp@gmail.com> | 2026-05-06 11:56:53 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2026-05-15 13:08:47 +0300 |
| commit | 24818f77603b3fcb7f3da5802b28bcc5ac7604aa (patch) | |
| tree | 3373ab0f590cbd7e4f3022425e9c39c1e6de18fa | |
| parent | bd13e630f9d03510012f1a530f08e9cf533e946a (diff) | |
| download | linux-24818f77603b3fcb7f3da5802b28bcc5ac7604aa.tar.xz | |
crypto: talitos - allocate channels with main struct
Use a flexible array member to combine allocations.
Add __counted_by for extra runtime analysis.
Error in case of no channels as they are required.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/crypto/talitos.c | 19 | ||||
| -rw-r--r-- | drivers/crypto/talitos.h | 5 |
2 files changed, 10 insertions, 14 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index bc61d0fe3514..bd4cc06ee13c 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -3409,14 +3409,20 @@ static int talitos_probe(struct platform_device *ofdev) struct device *dev = &ofdev->dev; struct device_node *np = ofdev->dev.of_node; struct talitos_private *priv; + unsigned int num_channels; int i, err; int stride; struct resource *res; - priv = devm_kzalloc(dev, sizeof(struct talitos_private), GFP_KERNEL); + if (of_property_read_u32(np, "fsl,num-channels", &num_channels)) + return -EINVAL; + + priv = devm_kzalloc(dev, struct_size(priv, chan, num_channels), GFP_KERNEL); if (!priv) return -ENOMEM; + priv->num_channels = num_channels; + INIT_LIST_HEAD(&priv->alg_list); dev_set_drvdata(dev, priv); @@ -3436,7 +3442,6 @@ static int talitos_probe(struct platform_device *ofdev) } /* get SEC version capabilities from device tree */ - of_property_read_u32(np, "fsl,num-channels", &priv->num_channels); of_property_read_u32(np, "fsl,channel-fifo-len", &priv->chfifo_len); of_property_read_u32(np, "fsl,exec-units-mask", &priv->exec_units); of_property_read_u32(np, "fsl,descriptor-types-mask", @@ -3511,16 +3516,6 @@ static int talitos_probe(struct platform_device *ofdev) } } - priv->chan = devm_kcalloc(dev, - priv->num_channels, - sizeof(struct talitos_channel), - GFP_KERNEL); - if (!priv->chan) { - dev_err(dev, "failed to allocate channel management space\n"); - err = -ENOMEM; - goto err_out; - } - priv->fifo_len = roundup_pow_of_two(priv->chfifo_len); for (i = 0; i < priv->num_channels; i++) { diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h index 1a93ee355929..34b0b5fab7e7 100644 --- a/drivers/crypto/talitos.h +++ b/drivers/crypto/talitos.h @@ -139,8 +139,6 @@ struct talitos_private { */ unsigned int fifo_len; - struct talitos_channel *chan; - /* next channel to be assigned next incoming descriptor */ atomic_t last_chan ____cacheline_aligned; @@ -153,6 +151,9 @@ struct talitos_private { /* hwrng device */ struct hwrng rng; bool rng_registered; + + struct talitos_channel chan[] __counted_by(num_channels); + }; /* .features flag */ |