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-rw-r--r--drivers/char/hw_random/Kconfig8
-rw-r--r--drivers/char/hw_random/atmel-rng.c4
-rw-r--r--drivers/char/hw_random/bcm63xx-rng.c6
-rw-r--r--drivers/char/hw_random/core.c19
-rw-r--r--drivers/char/hw_random/exynos-rng.c17
-rw-r--r--drivers/char/hw_random/ixp4xx-rng.c5
-rw-r--r--drivers/char/hw_random/n2-drv.c10
-rw-r--r--drivers/char/hw_random/octeon-rng.c2
-rw-r--r--drivers/char/hw_random/omap-rng.c10
-rw-r--r--drivers/char/hw_random/pasemi-rng.c4
-rw-r--r--drivers/char/hw_random/picoxcell-rng.c4
-rw-r--r--drivers/char/hw_random/ppc4xx-rng.c4
-rw-r--r--drivers/char/hw_random/timeriomem-rng.c6
-rw-r--r--drivers/char/hw_random/tx4939-rng.c7
-rw-r--r--drivers/char/hw_random/virtio-rng.c30
15 files changed, 75 insertions, 61 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index fbd9b2b850ef..c5a0262251bc 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -127,12 +127,12 @@ config HW_RANDOM_VIA
If unsure, say Y.
config HW_RANDOM_IXP4XX
- tristate "Intel IXP4xx NPU HW Random Number Generator support"
+ tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
depends on HW_RANDOM && ARCH_IXP4XX
default HW_RANDOM
---help---
- This driver provides kernel-side support for the Random
- Number Generator hardware found on the Intel IXP4xx NPU.
+ This driver provides kernel-side support for the Pseudo-Random
+ Number Generator hardware found on the Intel IXP45x/46x NPU.
To compile this driver as a module, choose M here: the
module will be called ixp4xx-rng.
@@ -216,7 +216,7 @@ config HW_RANDOM_MXC_RNGA
config HW_RANDOM_NOMADIK
tristate "ST-Ericsson Nomadik Random Number Generator support"
- depends on HW_RANDOM && PLAT_NOMADIK
+ depends on HW_RANDOM && ARCH_NOMADIK
---help---
This driver provides kernel-side support for the Random Number
Generator hardware found on ST-Ericsson SoCs (8815 and 8500).
diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c
index 731c9046cf7b..7c73d4aca36b 100644
--- a/drivers/char/hw_random/atmel-rng.c
+++ b/drivers/char/hw_random/atmel-rng.c
@@ -98,7 +98,7 @@ err_enable:
return ret;
}
-static int __devexit atmel_trng_remove(struct platform_device *pdev)
+static int atmel_trng_remove(struct platform_device *pdev)
{
struct atmel_trng *trng = platform_get_drvdata(pdev);
@@ -138,7 +138,7 @@ static const struct dev_pm_ops atmel_trng_pm_ops = {
static struct platform_driver atmel_trng_driver = {
.probe = atmel_trng_probe,
- .remove = __devexit_p(atmel_trng_remove),
+ .remove = atmel_trng_remove,
.driver = {
.name = "atmel-trng",
.owner = THIS_MODULE,
diff --git a/drivers/char/hw_random/bcm63xx-rng.c b/drivers/char/hw_random/bcm63xx-rng.c
index aec6a4277caa..f343b7d0dfa1 100644
--- a/drivers/char/hw_random/bcm63xx-rng.c
+++ b/drivers/char/hw_random/bcm63xx-rng.c
@@ -61,7 +61,7 @@ static int bcm63xx_rng_data_read(struct hwrng *rng, u32 *data)
return 4;
}
-static int __devinit bcm63xx_rng_probe(struct platform_device *pdev)
+static int bcm63xx_rng_probe(struct platform_device *pdev)
{
struct resource *r;
struct clk *clk;
@@ -145,7 +145,7 @@ out:
return ret;
}
-static int __devexit bcm63xx_rng_remove(struct platform_device *pdev)
+static int bcm63xx_rng_remove(struct platform_device *pdev)
{
struct hwrng *rng = platform_get_drvdata(pdev);
struct bcm63xx_rng_priv *priv = to_rng_priv(rng);
@@ -161,7 +161,7 @@ static int __devexit bcm63xx_rng_remove(struct platform_device *pdev)
static struct platform_driver bcm63xx_rng_driver = {
.probe = bcm63xx_rng_probe,
- .remove = __devexit_p(bcm63xx_rng_remove),
+ .remove = bcm63xx_rng_remove,
.driver = {
.name = "bcm63xx-rng",
.owner = THIS_MODULE,
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c
index 1bafb40ec8a2..69ae5972713c 100644
--- a/drivers/char/hw_random/core.c
+++ b/drivers/char/hw_random/core.c
@@ -40,6 +40,7 @@
#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include <asm/uaccess.h>
@@ -52,8 +53,12 @@ static struct hwrng *current_rng;
static LIST_HEAD(rng_list);
static DEFINE_MUTEX(rng_mutex);
static int data_avail;
-static u8 rng_buffer[SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES]
- __cacheline_aligned;
+static u8 *rng_buffer;
+
+static size_t rng_buffer_size(void)
+{
+ return SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES;
+}
static inline int hwrng_init(struct hwrng *rng)
{
@@ -116,7 +121,7 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf,
if (!data_avail) {
bytes_read = rng_get_data(current_rng, rng_buffer,
- sizeof(rng_buffer),
+ rng_buffer_size(),
!(filp->f_flags & O_NONBLOCK));
if (bytes_read < 0) {
err = bytes_read;
@@ -307,6 +312,14 @@ int hwrng_register(struct hwrng *rng)
mutex_lock(&rng_mutex);
+ /* kmalloc makes this safe for virt_to_page() in virtio_rng.c */
+ err = -ENOMEM;
+ if (!rng_buffer) {
+ rng_buffer = kmalloc(rng_buffer_size(), GFP_KERNEL);
+ if (!rng_buffer)
+ goto out_unlock;
+ }
+
/* Must not register two RNGs with the same name. */
err = -EEXIST;
list_for_each_entry(tmp, &rng_list, list) {
diff --git a/drivers/char/hw_random/exynos-rng.c b/drivers/char/hw_random/exynos-rng.c
index 232ba9ce579c..ac47631ab34f 100644
--- a/drivers/char/hw_random/exynos-rng.c
+++ b/drivers/char/hw_random/exynos-rng.c
@@ -101,9 +101,10 @@ static int exynos_read(struct hwrng *rng, void *buf,
return 4;
}
-static int __devinit exynos_rng_probe(struct platform_device *pdev)
+static int exynos_rng_probe(struct platform_device *pdev)
{
struct exynos_rng *exynos_rng;
+ struct resource *res;
exynos_rng = devm_kzalloc(&pdev->dev, sizeof(struct exynos_rng),
GFP_KERNEL);
@@ -120,10 +121,10 @@ static int __devinit exynos_rng_probe(struct platform_device *pdev)
return -ENOENT;
}
- exynos_rng->mem = devm_request_and_ioremap(&pdev->dev,
- platform_get_resource(pdev, IORESOURCE_MEM, 0));
- if (!exynos_rng->mem)
- return -EBUSY;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ exynos_rng->mem = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(exynos_rng->mem))
+ return PTR_ERR(exynos_rng->mem);
platform_set_drvdata(pdev, exynos_rng);
@@ -134,7 +135,7 @@ static int __devinit exynos_rng_probe(struct platform_device *pdev)
return hwrng_register(&exynos_rng->rng);
}
-static int __devexit exynos_rng_remove(struct platform_device *pdev)
+static int exynos_rng_remove(struct platform_device *pdev)
{
struct exynos_rng *exynos_rng = platform_get_drvdata(pdev);
@@ -162,7 +163,7 @@ static int exynos_rng_runtime_resume(struct device *dev)
}
-UNIVERSAL_DEV_PM_OPS(exynos_rng_pm_ops, exynos_rng_runtime_suspend,
+static UNIVERSAL_DEV_PM_OPS(exynos_rng_pm_ops, exynos_rng_runtime_suspend,
exynos_rng_runtime_resume, NULL);
static struct platform_driver exynos_rng_driver = {
@@ -172,7 +173,7 @@ static struct platform_driver exynos_rng_driver = {
.pm = &exynos_rng_pm_ops,
},
.probe = exynos_rng_probe,
- .remove = __devexit_p(exynos_rng_remove),
+ .remove = exynos_rng_remove,
};
module_platform_driver(exynos_rng_driver);
diff --git a/drivers/char/hw_random/ixp4xx-rng.c b/drivers/char/hw_random/ixp4xx-rng.c
index 263567f5f392..beec1627db3c 100644
--- a/drivers/char/hw_random/ixp4xx-rng.c
+++ b/drivers/char/hw_random/ixp4xx-rng.c
@@ -45,6 +45,9 @@ static int __init ixp4xx_rng_init(void)
void __iomem * rng_base;
int err;
+ if (!cpu_is_ixp46x()) /* includes IXP455 */
+ return -ENOSYS;
+
rng_base = ioremap(0x70002100, 4);
if (!rng_base)
return -ENOMEM;
@@ -68,5 +71,5 @@ module_init(ixp4xx_rng_init);
module_exit(ixp4xx_rng_exit);
MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>");
-MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver for IXP4xx");
+MODULE_DESCRIPTION("H/W Pseudo-Random Number Generator (RNG) driver for IXP45x/46x");
MODULE_LICENSE("GPL");
diff --git a/drivers/char/hw_random/n2-drv.c b/drivers/char/hw_random/n2-drv.c
index ebd48f0135da..20b962e1d832 100644
--- a/drivers/char/hw_random/n2-drv.c
+++ b/drivers/char/hw_random/n2-drv.c
@@ -25,7 +25,7 @@
#define DRV_MODULE_VERSION "0.2"
#define DRV_MODULE_RELDATE "July 27, 2011"
-static char version[] __devinitdata =
+static char version[] =
DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
@@ -611,7 +611,7 @@ static void n2rng_work(struct work_struct *work)
schedule_delayed_work(&np->work, HZ * 2);
}
-static void __devinit n2rng_driver_version(void)
+static void n2rng_driver_version(void)
{
static int n2rng_version_printed;
@@ -620,7 +620,7 @@ static void __devinit n2rng_driver_version(void)
}
static const struct of_device_id n2rng_match[];
-static int __devinit n2rng_probe(struct platform_device *op)
+static int n2rng_probe(struct platform_device *op)
{
const struct of_device_id *match;
int multi_capable;
@@ -719,7 +719,7 @@ out:
return err;
}
-static int __devexit n2rng_remove(struct platform_device *op)
+static int n2rng_remove(struct platform_device *op)
{
struct n2rng *np = dev_get_drvdata(&op->dev);
@@ -767,7 +767,7 @@ static struct platform_driver n2rng_driver = {
.of_match_table = n2rng_match,
},
.probe = n2rng_probe,
- .remove = __devexit_p(n2rng_remove),
+ .remove = n2rng_remove,
};
module_platform_driver(n2rng_driver);
diff --git a/drivers/char/hw_random/octeon-rng.c b/drivers/char/hw_random/octeon-rng.c
index 5c34c092af71..1eada566ca70 100644
--- a/drivers/char/hw_random/octeon-rng.c
+++ b/drivers/char/hw_random/octeon-rng.c
@@ -56,7 +56,7 @@ static int octeon_rng_data_read(struct hwrng *rng, u32 *data)
return sizeof(u32);
}
-static int __devinit octeon_rng_probe(struct platform_device *pdev)
+static int octeon_rng_probe(struct platform_device *pdev)
{
struct resource *res_ports;
struct resource *res_result;
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index a5effd813abd..749dc16ca2cc 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -27,8 +27,6 @@
#include <asm/io.h>
-#include <plat/cpu.h>
-
#define RNG_OUT_REG 0x00 /* Output register */
#define RNG_STAT_REG 0x04 /* Status register
[0] = STAT_BUSY */
@@ -106,7 +104,7 @@ static struct hwrng omap_rng_ops = {
.data_read = omap_rng_data_read,
};
-static int __devinit omap_rng_probe(struct platform_device *pdev)
+static int omap_rng_probe(struct platform_device *pdev)
{
struct omap_rng_private_data *priv;
int ret;
@@ -126,9 +124,9 @@ static int __devinit omap_rng_probe(struct platform_device *pdev)
goto err_ioremap;
}
- priv->base = devm_request_and_ioremap(&pdev->dev, priv->mem_res);
- if (!priv->base) {
- ret = -ENOMEM;
+ priv->base = devm_ioremap_resource(&pdev->dev, priv->mem_res);
+ if (IS_ERR(priv->base)) {
+ ret = PTR_ERR(priv->base);
goto err_ioremap;
}
dev_set_drvdata(&pdev->dev, priv);
diff --git a/drivers/char/hw_random/pasemi-rng.c b/drivers/char/hw_random/pasemi-rng.c
index 3a632673aed5..c6df5b29af08 100644
--- a/drivers/char/hw_random/pasemi-rng.c
+++ b/drivers/char/hw_random/pasemi-rng.c
@@ -94,7 +94,7 @@ static struct hwrng pasemi_rng = {
.data_read = pasemi_rng_data_read,
};
-static int __devinit rng_probe(struct platform_device *ofdev)
+static int rng_probe(struct platform_device *ofdev)
{
void __iomem *rng_regs;
struct device_node *rng_np = ofdev->dev.of_node;
@@ -122,7 +122,7 @@ static int __devinit rng_probe(struct platform_device *ofdev)
return err;
}
-static int __devexit rng_remove(struct platform_device *dev)
+static int rng_remove(struct platform_device *dev)
{
void __iomem *rng_regs = (void __iomem *)pasemi_rng.priv;
diff --git a/drivers/char/hw_random/picoxcell-rng.c b/drivers/char/hw_random/picoxcell-rng.c
index 97bd891422c7..973b95113edf 100644
--- a/drivers/char/hw_random/picoxcell-rng.c
+++ b/drivers/char/hw_random/picoxcell-rng.c
@@ -151,7 +151,7 @@ err_enable:
return ret;
}
-static int __devexit picoxcell_trng_remove(struct platform_device *pdev)
+static int picoxcell_trng_remove(struct platform_device *pdev)
{
hwrng_unregister(&picoxcell_trng);
clk_disable(rng_clk);
@@ -181,7 +181,7 @@ static const struct dev_pm_ops picoxcell_trng_pm_ops = {
static struct platform_driver picoxcell_trng_driver = {
.probe = picoxcell_trng_probe,
- .remove = __devexit_p(picoxcell_trng_remove),
+ .remove = picoxcell_trng_remove,
.driver = {
.name = "picoxcell-trng",
.owner = THIS_MODULE,
diff --git a/drivers/char/hw_random/ppc4xx-rng.c b/drivers/char/hw_random/ppc4xx-rng.c
index c51762c13031..732c330805fd 100644
--- a/drivers/char/hw_random/ppc4xx-rng.c
+++ b/drivers/char/hw_random/ppc4xx-rng.c
@@ -90,7 +90,7 @@ static struct hwrng ppc4xx_rng = {
.data_read = ppc4xx_rng_data_read,
};
-static int __devinit ppc4xx_rng_probe(struct platform_device *dev)
+static int ppc4xx_rng_probe(struct platform_device *dev)
{
void __iomem *rng_regs;
int err = 0;
@@ -111,7 +111,7 @@ static int __devinit ppc4xx_rng_probe(struct platform_device *dev)
return err;
}
-static int __devexit ppc4xx_rng_remove(struct platform_device *dev)
+static int ppc4xx_rng_remove(struct platform_device *dev)
{
void __iomem *rng_regs = (void __iomem *) ppc4xx_rng.priv;
diff --git a/drivers/char/hw_random/timeriomem-rng.c b/drivers/char/hw_random/timeriomem-rng.c
index f1a1618db1fb..849db199c02c 100644
--- a/drivers/char/hw_random/timeriomem-rng.c
+++ b/drivers/char/hw_random/timeriomem-rng.c
@@ -88,7 +88,7 @@ static struct hwrng timeriomem_rng_ops = {
.priv = 0,
};
-static int __devinit timeriomem_rng_probe(struct platform_device *pdev)
+static int timeriomem_rng_probe(struct platform_device *pdev)
{
struct resource *res;
int ret;
@@ -130,7 +130,7 @@ failed:
return ret;
}
-static int __devexit timeriomem_rng_remove(struct platform_device *pdev)
+static int timeriomem_rng_remove(struct platform_device *pdev)
{
del_timer_sync(&timeriomem_rng_timer);
hwrng_unregister(&timeriomem_rng_ops);
@@ -146,7 +146,7 @@ static struct platform_driver timeriomem_rng_driver = {
.owner = THIS_MODULE,
},
.probe = timeriomem_rng_probe,
- .remove = __devexit_p(timeriomem_rng_remove),
+ .remove = timeriomem_rng_remove,
};
module_platform_driver(timeriomem_rng_driver);
diff --git a/drivers/char/hw_random/tx4939-rng.c b/drivers/char/hw_random/tx4939-rng.c
index de473ef3882b..30991989d65b 100644
--- a/drivers/char/hw_random/tx4939-rng.c
+++ b/drivers/char/hw_random/tx4939-rng.c
@@ -7,6 +7,7 @@
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
+#include <linux/err.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
@@ -115,9 +116,9 @@ static int __init tx4939_rng_probe(struct platform_device *dev)
rngdev = devm_kzalloc(&dev->dev, sizeof(*rngdev), GFP_KERNEL);
if (!rngdev)
return -ENOMEM;
- rngdev->base = devm_request_and_ioremap(&dev->dev, r);
- if (!rngdev->base)
- return -EBUSY;
+ rngdev->base = devm_ioremap_resource(&dev->dev, r);
+ if (IS_ERR(rngdev->base))
+ return PTR_ERR(rngdev->base);
rngdev->rng.name = dev_name(&dev->dev);
rngdev->rng.data_present = tx4939_rng_data_present;
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 5708299507d0..6bf4d47324eb 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -92,14 +92,22 @@ static int probe_common(struct virtio_device *vdev)
{
int err;
+ if (vq) {
+ /* We only support one device for now */
+ return -EBUSY;
+ }
/* We expect a single virtqueue. */
vq = virtio_find_single_vq(vdev, random_recv_done, "input");
- if (IS_ERR(vq))
- return PTR_ERR(vq);
+ if (IS_ERR(vq)) {
+ err = PTR_ERR(vq);
+ vq = NULL;
+ return err;
+ }
err = hwrng_register(&virtio_hwrng);
if (err) {
vdev->config->del_vqs(vdev);
+ vq = NULL;
return err;
}
@@ -112,6 +120,7 @@ static void remove_common(struct virtio_device *vdev)
busy = false;
hwrng_unregister(&virtio_hwrng);
vdev->config->del_vqs(vdev);
+ vq = NULL;
}
static int virtrng_probe(struct virtio_device *vdev)
@@ -119,7 +128,7 @@ static int virtrng_probe(struct virtio_device *vdev)
return probe_common(vdev);
}
-static void __devexit virtrng_remove(struct virtio_device *vdev)
+static void virtrng_remove(struct virtio_device *vdev)
{
remove_common(vdev);
}
@@ -147,25 +156,14 @@ static struct virtio_driver virtio_rng_driver = {
.driver.owner = THIS_MODULE,
.id_table = id_table,
.probe = virtrng_probe,
- .remove = __devexit_p(virtrng_remove),
+ .remove = virtrng_remove,
#ifdef CONFIG_PM
.freeze = virtrng_freeze,
.restore = virtrng_restore,
#endif
};
-static int __init init(void)
-{
- return register_virtio_driver(&virtio_rng_driver);
-}
-
-static void __exit fini(void)
-{
- unregister_virtio_driver(&virtio_rng_driver);
-}
-module_init(init);
-module_exit(fini);
-
+module_virtio_driver(virtio_rng_driver);
MODULE_DEVICE_TABLE(virtio, id_table);
MODULE_DESCRIPTION("Virtio random number driver");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-11 02:48:05 +0000