Proof of concept on how devcd register core area works.
Signed-off-by: Eugen Hristev <eugen.hristev@xxxxxxxxxx>
---
drivers/crypto/qcom-rng.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/crypto/qcom-rng.c b/drivers/crypto/qcom-rng.c
index 0685ba122e8a..a1509609f50c 100644
--- a/drivers/crypto/qcom-rng.c
+++ b/drivers/crypto/qcom-rng.c
@@ -7,6 +7,7 @@
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/crypto.h>
+#include <linux/devcoredump.h>
#include <linux/hw_random.h>
#include <linux/io.h>
#include <linux/iopoll.h>
@@ -32,11 +33,13 @@
#define QCOM_TRNG_QUALITY 1024
struct qcom_rng {
+ char start[10];
struct mutex lock;
void __iomem *base;
struct clk *clk;
struct hwrng hwrng;
struct qcom_rng_match_data *match_data;
+ char end[10];
};
struct qcom_rng_ctx {
@@ -192,6 +195,10 @@ static int qcom_rng_probe(struct platform_device *pdev)
if (IS_ERR(rng->base))
return PTR_ERR(rng->base);
+ /* Setting some markers to easily recognize them afterwards */
+ strcpy(rng->start, "MD_RNG_ST");
+ strcpy(rng->end, "MD_RNG_en");
+
rng->clk = devm_clk_get_optional(&pdev->dev, "core");
if (IS_ERR(rng->clk))
return PTR_ERR(rng->clk);
@@ -218,6 +225,8 @@ static int qcom_rng_probe(struct platform_device *pdev)
}
}
+ devcd_register_core_area(&pdev->dev, rng, sizeof(*rng));
+
return ret;
fail:
crypto_unregister_rng(&qcom_rng_alg);
@@ -228,6 +237,8 @@ static void qcom_rng_remove(struct platform_device *pdev)
{
crypto_unregister_rng(&qcom_rng_alg);
+ devcd_unregister_core_area(&pdev->dev, qcom_rng_dev,
+ sizeof(*qcom_rng_dev));
qcom_rng_dev = NULL;
}
--
2.43.0
