From: Candice Li <candice.li@amd.com>
Date: Tue, 19 May 2026 04:47:24 +0000 (+0800)
Subject: drm/amd/amdxcp: use kasprintf for XCP platform device names
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=79a9f51ab989af7136908072b493d642f8e9c4bb;p=thirdparty%2Flinux.git

drm/amd/amdxcp: use kasprintf for XCP platform device names

Replace the fixed stack buffer with kasprintf() so platform
device names are always fully formatted.

Signed-off-by: Candice Li <candice.li@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c b/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
index 44009aa8216ed..995cae6be144a 100644
--- a/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
+++ b/drivers/gpu/drm/amd/amdxcp/amdgpu_xcp_drv.c
@@ -25,6 +25,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
 #include <drm/drm_drv.h>
 
@@ -52,7 +53,7 @@ int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev)
 {
 	struct platform_device *pdev;
 	struct xcp_device *pxcp_dev;
-	char dev_name[20];
+	char *dev_name;
 	int ret, i;
 
 	guard(mutex)(&xcp_mutex);
@@ -68,8 +69,12 @@ int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev)
 	if (i >= MAX_XCP_PLATFORM_DEVICE)
 		return -ENODEV;
 
-	snprintf(dev_name, sizeof(dev_name), "amdgpu_xcp_%d", i);
+	dev_name = kasprintf(GFP_KERNEL, "amdgpu_xcp_%d", i);
+	if (!dev_name)
+		return -ENOMEM;
+
 	pdev = platform_device_register_simple(dev_name, -1, NULL, 0);
+	kfree(dev_name);
 	if (IS_ERR(pdev))
 		return PTR_ERR(pdev);