[PATCH] [Patch v2]Add ETE devarch condition in etm4_init_iomem_access

From: yiru zhang
Date: Tue Apr 08 2025 - 23:29:34 EST


Due to ETE supported, so add ETE devarch condition in etm4_init_iomem_access.
Signed-off-by: yiru zhang <yiru.zhang@xxxxxxxxxxxx>

v1->v2: use switch case way
---
drivers/hwtracing/coresight/coresight-etm4x-core.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c
index 2b8f10463840..366d11e038de 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-core.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c
@@ -1135,11 +1135,15 @@ static bool etm4_init_iomem_access(struct etmv4_drvdata *drvdata,
* with MMIO. But we cannot touch the OSLK until we are
* sure this is an ETM. So rely only on the TRCDEVARCH.
*/
- if ((devarch & ETM_DEVARCH_ID_MASK) != ETM_DEVARCH_ETMv4x_ARCH) {
- pr_warn_once("TRCDEVARCH doesn't match ETMv4 architecture\n");
+ switch (devarch & ETM_DEVARCH_ID_MASK) {
+ case ETM_DEVARCH_ETMv4x_ARCH:
+ case ETM_DEVARCH_ETE_ARCH:
+ break;
+ default:
+ pr_warn_once("Unknown ETM architecture: %x\n",
+ devarch & ETM_DEVARCH_ID_MASK);
return false;
}
-
drvdata->arch = etm_devarch_to_arch(devarch);
*csa = CSDEV_ACCESS_IOMEM(drvdata->base);
return true;
--
2.46.0